Database Develop

QWERTY Micro USB Keyboard?

Since i'm thinking about buying an HD2 but would really like an hardware keyboard (most for writing and playing games), does anyone know if there is some kind of attachment designed for this phone? i don't mind if it will make the handset bigger, since i think the HD2 is actually pretty slim.

Not that the software KB is at all bad on the Leo, but an external Keyboard would be very useful for typing out large documents indeedy.
As far as I know there is no USB host controller on the phone so there are no devices that can be connected to it (Other than a device that has a host controller such as a PC).
There is an alternative though, bluetooth keyboards. The smallest and nicest Ive seen is Logitech DiNovo
...not cheap though. There are a few others out there .freedominput.com have a few nice keyboards. Google around might see a few more

Bluetooth keyboards
I read that somewhere, that there is no USB hc.
Logitech DiNovo Mini looks nice.
I have the full size version, which I love.
I got my Thinkoutside/Stowaway bt keyboard to work with it.
Works well.
No key sound though.
jagnet said:
Not that the software KB is at all bad on the Leo, but an external Keyboard would be very useful for typing out large documents indeedy.
As far as I know there is no USB host controller on the phone so there are no devices that can be connected to it (Other than a device that has a host controller such as a PC).
There is an alternative though, bluetooth keyboards. The smallest and nicest Ive seen is Logitech DiNovo
...not cheap though. There are a few others out there .freedominput.com have a few nice keyboards. Google around might see a few more
Click to expand...
Click to collapse

i am also looking for one if there is. sounds like a good idea.

www cartft com/catalog/il/478

PsycleSam said:
www cartft com/catalog/il/478
Click to expand...
Click to collapse
looks usefull but have you tried this with an HD2?
i thought the posts above said that there is no usb driver inside?

I just posted the URL above in case someone needed a small USB keyboard. I don't know about the HD2, but it is probably like my N1 running CM7 with no native USB host keyboard support in the ROM. I have ordered one of these to try with my tiny Archos 28 tablet which does haveUSB keyboad support.
Sent from my A28 using XDA Premium App

PsycleSam said:
I just posted the URL above in case someone needed a small USB keyboard. I don't know about the HD2, but it is probably like my N1 running CM7 with no native USB host keyboard support in the ROM. I have ordered one of these to try with my tiny Archos 28 tablet which does haveUSB keyboad support.
Sent from my A28 using XDA Premium App
Click to expand...
Click to collapse
er, ok, but it was in the "HD2 Accessories" forum

Xaddict said:
I got my Thinkoutside/Stowaway bt keyboard to work with it.
Works well.
No key sound though.
Click to expand...
Click to collapse
Are all the keys of the stowaway working, because I'm planning on purchasing one...

looks like the attachment i have on my ps3....which btw doesnt work on my hd2

Bluetooth keyboard compatible with WebTop via HDMI?

Are there any keyboards with trackpads that you can hook up to the Bionc in conjunction with Webtop via HDMI?
I searched, only found 1 topic in the Atrix forum that was never answered.

I succesfully paired my Logitec Dinovo Mini and it works like a charm trackpad and everything.
Sent from my DROID BIONIC using xda premium

Bluetooth devices work just fine, just make sure you buy Bluetooth and you should be golden.
Sent from my DROID BIONIC using XDA App
------- EDIT
Sorry, I'd like to point out why I say this. I have a pretty freakin' old MX5500 keyboard & mouse combo from Wal-Mart years back. They sync fine even though they were designed without Android in mind at all.

Haloman800 said:
Are there any keyboards with trackpads that you can hook up to the Bionc in conjunction with Webtop via HDMI?
I searched, only found 1 topic in the Atrix forum that was never answered.
Click to expand...
Click to collapse
Old fashioned wireless keyboards, mice and trackpads work too -- doesn't have to be Bluetooth. Sometimes they can be a lot cheaper, or you might even have some old ones from a PC that would work. I picked up a Logitech mouse/keyboard combo that works off one USB dongle for about $30, and it works great with the HDMI dock, in both Webtop and Mirroring modes.

Recommendation for Keyboard

Hi All,
Can anyone recommend a decent BT keyboard to work inline with the Nexus 7??
Cheers
Rich

I really like this one...
http://www.amazon.com/Logitech-Tabl...113&sr=8-1&keywords=logitech+android+keyboard
Very nice quality.

I have also been looking for one, however every one I have seen on various websites is either stupidly high in price or has a lot of negative reviews from other android owners.

Lennyuk said:
I have also been looking for one, however every one I have seen on various websites is either stupidly high in price or has a lot of negative reviews from other android owners.
Click to expand...
Click to collapse
Yeah same problem......would also appreciate UK websites if poss......: )

Yeah, for every good one there 50+ crappy ones.
Expansys has it:
http://www.expansys.com/logitech-ta...tm_medium=shopping&utm_campaign=base&ito=1701
Here's a review with some pictures:
http://www.androidpolice.com/2012/0...h-bluetooth-keyboard-for-android-3-0-devices/

+1
I have this and it works great. I'd also assume the motorola one would work just as well, but I think it's pricier. You can get a generic keyboard much cheaper, but you don't get the android keys (home, back,menu,search).
bleclair said:
I really like this one...
Logitech-Tablet-Keyboard-Android-920-003390/dp/B0054L8N7M/ref=sr_1_1?ie=UTF8&qid=1343396113&sr=8-1&keywords=logitech+android+keyboard
Very nice quality.
Click to expand...
Click to collapse

I had the Motorola one and the quality was really so-so. Much nicer to type on the Logitech.

Should add that the Logitech tablet keyboard for iPad is £15 cheaper than the Android variant: http://www.amazon.co.uk/dp/B0053FAL...de=asn&creative=22206&creativeASIN=B0053FAL24
Can't see why it wouldn't work, it uses Bluetooth too. So maybe it's just the function keys that are the difference between the Android and iPad versions?
Also had a few other decent-looking bluetooth keyboards bookmarked:
Perixx: http://www.amazon.co.uk/Perixx-PERI...TF8&coliid=I220068LGN8Q3Z&colid=2BR9RKFGQNYYD
HP Touchpad: http://www.amazon.co.uk/Hewlett-Pac...UTF8&coliid=ID3PH9NDFJELK&colid=2BR9RKFGQNYYD

Just made a thread for a great deal on Motorola Bluetooth keyboard w/ mouse
Sent from my SCH-I535 using xda app developers app

je2345 said:
Just made a thread for a great deal on Motorola Bluetooth keyboard w/ mouse
Sent from my SCH-I535 using xda app developers app
Click to expand...
Click to collapse
but its US not UK

Salty Wagyu said:
Should add that the Logitech tablet keyboard for iPad is £15 cheaper than the Android variant: http://www.amazon.co.uk/dp/B0053FAL...de=asn&creative=22206&creativeASIN=B0053FAL24
Can't see why it wouldn't work, it uses Bluetooth too. So maybe it's just the function keys that are the difference between the Android and iPad versions?
Also had a few other decent-looking bluetooth keyboards bookmarked:
Perixx: http://www.amazon.co.uk/Perixx-PERI...TF8&coliid=I220068LGN8Q3Z&colid=2BR9RKFGQNYYD
HP Touchpad: http://www.amazon.co.uk/Hewlett-Pac...UTF8&coliid=ID3PH9NDFJELK&colid=2BR9RKFGQNYYD
Click to expand...
Click to collapse
Any thoughts on the Perixx or HP one? Any good you think??

Funkyfin2000 said:
Any thoughts on the Perixx or HP one? Any good you think??
Click to expand...
Click to collapse
I don't own either, don't have a BT keyboard yet infact Still weighing my options!

Funkyfin2000 said:
Any thoughts on the Perixx or HP one? Any good you think??
Click to expand...
Click to collapse
I have the Touchpad keyboard. Works great with Android, and fits well in a bag. Though the media keys don't map to fn keys and there's no ALT.
The Perixx looks really good. So good that now that you've brought it to my attention I might flog my TP keyboard on eBay and get one.

I'm pretty happy with my apple keyboard heh. It's full size for typing, and small for throwing in my bag and my favorite feel for a keyboard next to my Model M. I bought it for my nook color when there weren't even decent android keyboards to buy if you wanted to. It was good to my nook, and it's even better to my nexus

Here's a review of ZaggKeys Flex it's on Amazon.
Sent from my Nexus 7 using Tapatalk 2

Funkyfin2000 said:
Hi All,
Can anyone recommend a decent BT keyboard to work inline with the Nexus 7??
Cheers
Rich
Click to expand...
Click to collapse
I'm not trying to troll, but why do you want a keyboard for a tablet. I've never understood this. Isn't that what a laptop or netbook is for? Just curious.....maybe I'm missing something.
maybe I'm trolling......
Sent from my Nexus 7 using xda premium

jdyowa said:
I'm not trying to troll, but why do you want a keyboard for a tablet. I've never understood this. Isn't that what a laptop or netbook is for? Just curious.....maybe I'm missing something.
maybe I'm trolling......
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
You can't detach the keyboard from a laptop or netbook. You also can't hold a laptop or netbook in your hands while using it. A tablet with a keyboard accessory has more versatility and portability than a laptop, the only question is whether you'll find the apps and OS sufficient to do your work.
Back to the topic, I picked up the Logitech keyboard today. Best tablet keyboard I've used so far, certainly much better than the poopy one I got with the dock on my old TF101. Pick one up if you can spare the cash.

ThinkOutside
I use my ThinkOutside BT keyboard. It works a treat. It can be a bit pricey from some places, cheaper from others, but I think they are all teh same thing. I have had mine about 5 years, and it works with almost all devices.
Pros:
1. Thin
2. Full-size keys
3. proper keys with travel (not rubber)
4. Stand for phone or small tab
Cons:
1. Price?
2. ?

Had this same issue last week and while the Logitech is good, it is expensive without getting a refurbished one.
I got a Microsoft Bluetooth Mobile Keyboard 5000, it works perfectly, portable and comfy to type on. Also its only $35 on amazon
http://www.amazon.com/Microsoft-Blu...&sr=8-1&keywords=microsoft+bluetooth+keyboard
Sent from my Nexus 7 using xda app-developers app

Confirmed working and all features functioning.
Micro size keyboard, dimensions 202mm (L), 106mm (W), 18mm (D)
Keyboard includes left/right mouse buttons and a thumb mouse scroll wheel.
Touch scroll bar at the side of the mouse wheel allows you to scroll up and down pages/documents.
56 key layout, QWERTY keyboard in UK layout
Includes Media Control Keys - Email, Internet, Back/Forward, Play/Pause/Mute (activated by pressing function key)
Includes Arrow Keys
Weight 205g
Wireless Bluetooth - (enabled Bluetooth device or receiver required, bluetooth receiver not included) Wireless range up to 10 Metres
Includes Sleep and Wake up on key press functions to greatly extend battery life.
Battery Low LED Indicator
On/Off Switch
Takes 2x AAA batteries (not included)
Fully Compatible with Windows 2000/XP/Vista/Win7
Generic versions available online , search for WKB-1500 Bluetooth Mini Keyboard.
Transforms text input to the point where you could ditch your laptop/netbook.
jdyowa said:
why do you want a keyboard for a tablet
Click to expand...
Click to collapse
Ever tried typing into a tablet, with your fingers, on a train in the UK ?
A keyboard ups the WPM dramatically
Also working well a Gigabyte GM-M7700B Bluetooth Laser Mouse.

Mini bluetooth keyboard problem

Hi ive just bought a mini bluetooth keyboard from ebay. Its a great little device it has a full querty keyboard and a touchpad its made by ipazzport I think but its similar to the rii one.
My problem is its range is terrible it says it will work upto 33ft/10m but mine only works 1ft away from my phone any further like if I lean back in my chair and it becomes unusable.
Could it be faulty? Or maybe a flat battery? Or interference with wifi? Or maybe a setting im missing
I hoped there might be someone with knowledge on these mini bluetooth keyboards who might beable to shed some light.
My plan was to use it with an hdmi cable but I cant as it is. Im gonna leave it on charge all night and ive contacted the seller already about a refund but its a shame as it would be perfect if it worked properly.
Any info appreciated
Sent from my GT-N7100 using xda app-developers app

Hello, I just can tell you my Bluetooth keyboard RT-MWK02+ works fine with Samsung Galaxy Note 2 and "Android External Keyboard helper" up to about 3m !

I have the Rii Mini and it works up to about 10m away.
Do you have a laptop or something else you can test the keyboard with? If it has the same problem with another device then it's probably a faulty keyboard.
Sent from my GT-N7100 using xda app-developers app

richlum said:
I have the Rii Mini and it works up to about 10m away.
Do you have a laptop or something else you can test the keyboard with? If it has the same problem with another device then it's probably a faulty keyboard.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
I am using the Rii Mini as well. Works fine.

b4d5h0t said:
Hi ive just bought a mini bluetooth keyboard from ebay. Its a great little device it has a full querty keyboard and a touchpad its made by ipazzport I think but its similar to the rii one.
My problem is its range is terrible it says it will work upto 33ft/10m but mine only works 1ft away from my phone any further like if I lean back in my chair and it becomes unusable.
Could it be faulty? Or maybe a flat battery? Or interference with wifi? Or maybe a setting im missing
I hoped there might be someone with knowledge on these mini bluetooth keyboards who might beable to shed some light.
My plan was to use it with an hdmi cable but I cant as it is. Im gonna leave it on charge all night and ive contacted the seller already about a refund but its a shame as it would be perfect if it worked properly.
Any info appreciated
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
did you ever get this work? im thinking of buying one. thanks

adrian2pm said:
did you ever get this work? im thinking of buying one. thanks
Click to expand...
Click to collapse
I bought one works perfect, laser beam is a bonus, the cats love it.

BrokenPixel said:
I bought one works perfect, laser beam is a bonus, the cats love it.
Click to expand...
Click to collapse
thanks..ordering now

Hi guys,
Which one of those have you got? Is it Rii Mini N7? Could you please provide a link to buy? I am interested in getting one as well.. I have a diNovo Edge which I love but I hate to have to pair-unpair it with multiple devices we have at home.. These look like good htpc (n7100.. hehe) companions..
Do you use yours also with your pc? How does it perform?

I have the Rii mini.
I originally bought it to use with the Note 1.
It works, but I found the office apps on Android not all that conducive to the type of editing I mainly do (using track changes and adding comments). So, I don't do as much editing as I expected I would.
I now just use it with my laptop.
It has replaced my Targus presenter a it has the laser pointer, and I can control power point press.
But the cursor keys and keyboard mean I can also use it to navigate pdf files on the projector and do simple text entry whilst standing up away from the laptop.
I use a lot of pdfs in my classes and type and draw over the top of them to fill in answers, highlight things, underline, circle etc. . It's great for that.
I wouldn't want to use it to type a whole paragraph.
Sent from my GT-N7100 using xda app-developers app

My apple bluetooth keyboard works at least 15m away couldn't test more at home

What do y'all find yourselves using the bt keyboards for with the Note? I am trying to decide if I have a use for one or not.
Sent from my Obamaphone using Tapatalk.

richlum said:
I have the Rii mini.
I originally bought it to use with the Note 1.
It works, but I found the office apps on Android not all that conducive to the type of editing I mainly do (using track changes and adding comments). So, I don't do as much editing as I expected I would.
I now just use it with my laptop.
It has replaced my Targus presenter a it has the laser pointer, and I can control power point press.
But the cursor keys and keyboard mean I can also use it to navigate pdf files on the projector and do simple text entry whilst standing up away from the laptop.
I use a lot of pdfs in my classes and type and draw over the top of them to fill in answers, highlight things, underline, circle etc. . It's great for that.
I wouldn't want to use it to type a whole paragraph.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
I also teach and was thinking that this could be something that I'd use both at home and in class. Laser pointer is a plus too. Though I like the other model which also serves as a learning remote; it does not have a pointer. I think I'll get one with a pointer...
Still.. there are different varieties.. one that has the touchpad in the center of the keyboard, one that looks rectangular with touchpad on the right.. and another one that has the touchpad on the right and the lower right corner rounded.
I wonder if there is a difference in quality as well as the shape..

I have the one with the touch pad on the right and the lower right corner rounded.
The model # is RT-MWK02 it might have some more characters, but the text on the sticker is faded.
The touch pad is OK, but it's difficult to do any delicate movements. I can put the cursor into a text entry box on a web page, for example. But, it's a little fiddly. I find it easier to use the cursor keys to navigate around most of the time.
Sent from my GT-N7100 using xda app-developers app

Are u all using your bluetooth keyboards with a tiny usb bluetooth receiver thats usually included with them or just through the in built bluetooth pairing? when i tested mine it paired up without the need of the tiny usb receiver so i didnt use it but it didnt work well im thinking now perhaps i should have used the included receiver and an otg cable.
Sent from my GT-N8010 using xda app-developers app

My Rii mini works fine with the inbuilt BT receiver in my Note 2, Note 1 and laptop. I've never even used the included BT dongle to know if it works
Sent from my GT-N7100 using xda app-developers app

Bluetooth Keyboard for NOOK HD+

I want to share anybody his/hers experience Bluetooth Keyboard for NOOK HD+.
My NOOK was rooted and installed CM 10.2. I tested GE Bluetooth Keyboard from Target ($39.99 +Tax).
It was hard pairing at 1st time - ON/OFF Bluetooth SW and NOOK's Bluetooth Button several times - but connected, paired and can type.
If anyone use Bluetooth Keyboard with NOOK HD+, share the experience in here.
Thanks

fatstar said:
I want to share anybody his/hers experience Bluetooth Keyboard for NOOK HD+.
My NOOK was rooted and installed CM 10.2. I tested GE Bluetooth Keyboard from Target ($39.99 +Tax).
It was hard pairing at 1st time - ON/OFF Bluetooth SW and NOOK's Bluetooth Button several times - but connected, paired and can type.
If anyone use Bluetooth Keyboard with NOOK HD+, share the experience in here.
Thanks
Click to expand...
Click to collapse
I am using a mini keyboard from FAVI http://www.amazon.com/FAVI-Bluetoot...&sr=8-2&keywords=favi+mini+bluetooth+keyboard it works on all version of CM, Carbon 4.2 and 4.3, and stock with no issues. As long as your Rom has bluetooth this works great and easy to carry too.

fatstar said:
I want to share anybody his/hers experience Bluetooth Keyboard for NOOK HD+.
My NOOK was rooted and installed CM 10.2. I tested GE Bluetooth Keyboard from Target ($39.99 +Tax).
It was hard pairing at 1st time - ON/OFF Bluetooth SW and NOOK's Bluetooth Button several times - but connected, paired and can type.
If anyone use Bluetooth Keyboard with NOOK HD+, share the experience in here.
Thanks
Click to expand...
Click to collapse
SHARKK Backlight BT 3.0
I use that keyboard that I got for Christmas this year. no issue pairing on CM 10.2 or CM 11. It has a multi-colored backlight that you can choose, dedicated media keys, brightness keys which are SUPER convenient, Screen lock key, etc. It's really thin and I haven't charged it since I got it (Jan 12th, late gift.) I really like it. The ONLY complaint I have is that the metal they chose for it's structure is soft and really flexible, so bending on it even slightly with through it out of alignment and then typing on it, it will click and clang around on the table or desk. requiring a readjustment to straighten it. a minor annoyance but still worth mentioning.

That sharkk one does look nice, but does anyone know of a keyboard that you can attach to the tablet somehow?
I really miss that feature from my TF700 (it was probably the only great aspect of it).

disappearer said:
That sharkk one does look nice, but does anyone know of a keyboard that you can attach to the tablet somehow?
I really miss that feature from my TF700 (it was probably the only great aspect of it).
Click to expand...
Click to collapse
Duct tape.
BOOM.
Problem solved. :good:
You're welcome. :laugh:

felacio said:
Duct tape.
Click to expand...
Click to collapse
suaaaaave
but I'm looking for a more elegant way

disappearer said:
suaaaaave
but I'm looking for a more elegant way
Click to expand...
Click to collapse
Search following item in AMAZON...
"Lumsing Ultrathin iPad Wireless Bluetooth 3.0 Fluorescent Aluminum Keyboard with Stands"
One user replied, it works for NOOK HD+ with stock rom, but does not know for CM 10.1/10.2.
It has option for Windows/Android/iOS.
Forum not allowed to attach outside link, sorry.

Poetic case and bluetooth keyboard. Works great. I'm running CM 10.1(update: now running cm 11. Still works great. Added blutooth mouse to the mix. Seems to handle the bluetooth stack well)
Sent from my SAMSUNG-SGH-I527

azpatterson3 said:
Poetic case and bluetooth keyboard. Works great. I'm running CM 10.1
Sent from my SAMSUNG-SGH-I527
Click to expand...
Click to collapse
How is the weight?

jpisini said:
How is the weight?
Click to expand...
Click to collapse
The keyboard and case is probably half the weight of the tablet. I don't think its bad at all.
Specs say the keyboard weighs 505g.
Sent from my SAMSUNG-SGH-I527

azpatterson3 said:
The keyboard and case is probably half the weight of the tablet. I don't think its bad at all.
Specs say the keyboard weighs 505g.
Sent from my SAMSUNG-SGH-I527
Click to expand...
Click to collapse
I was thinking of getting something like this but was worried it might be too heavy. I have an hour trip to work on the train and another hour home and usually have to stand so I have to hold the tablet one handed so weight is important. I was also thinking of one of the ones that the keybaord is removable not sure if the one you have can do that or not,

jpisini said:
I was thinking of getting something like this but was worried it might be too heavy. I have an hour trip to work on the train and another hour home and usually have to stand so I have to hold the tablet one handed so weight is important. I was also thinking of one of the ones that the keybaord is removable not sure if the one you have can do that or not,
Click to expand...
Click to collapse
Keyboard is removable. It is held by magnet. Can work up to 10 meters away.
Sent from my SAMSUNG-SGH-I527

azpatterson3 said:
Keyboard is removable. It is held by magnet. Can work up to 10 meters away.
Sent from my SAMSUNG-SGH-I527
Click to expand...
Click to collapse
Thanks man. One last question if you don't mind. If you use the hdmi adapter does it work with out taking the nook out of the case? That is my biggest complaint on the case I have now which is a poetic I have to pull it out to watch a movie on my TV.

jpisini said:
Thanks man. One last question if you don't mind. If you use the hdmi adapter does it work with out taking the nook out of the case? That is my biggest complaint on the case I have now which is a poetic I have to pull it out to watch a movie on my TV.
Click to expand...
Click to collapse
I've never used the hdmi adapter but I have plenty of room to plug in the charger.
Sent from my SAMSUNG-SGH-I527

I can tell from this picture that the case would be in the way. Thanks for posting it
Sent from my PC36100 using xda app-developers app

I just got a Microsoft Wedge Bluetooth Keyboard($47) and a cheap Hype Bluetooth Mouse ($14) for my HD+. Both work flawlessly. Don't go cheap on the keyboard. It's important for comfortable typing.
Best - Mike

Have FAVI with laser pointer...... Nice, compact, easy to use and set up.... Comes with laser pointer(not why I bought). Using it is like typing on phone, battery life is longer then Nook so I just charge them both at same time.... Best feature is mouse pad on keyboard, did not think I would use it but it makes cutting and pasting very easy........

HD+ and MS Wedge keyboard
Mike, did you have to do anything special to get your Wedge keyboard to pair with your HD+, as my Wedge works perfectly with my Samsung Galaxy Ace 2 phone, but won't pair with my HD+, running either the stock ROM or CM 10.2? Be great to hook them up and then add a mouse...
Regards, Jon.
gollumses said:
I just got a Microsoft Wedge Bluetooth Keyboard($47) and a cheap Hype Bluetooth Mouse ($14) for my HD+. Both work flawlessly. Don't go cheap on the keyboard. It's important for comfortable typing.
Best - Mike
Click to expand...
Click to collapse

I just picked up a Nook HD+ and a HP K4000 bluetooth keyboard.
The k4000 wouldn't pair with the Nook, but worked with all my other devices.
After an hour wasted with tech support from HP and B&N, google searches led me to forums that suggested downloading and installing
an app from the Google Play store:
https://play.google.com/store/apps/details?id=com.teksoftco.android.blueinput&hl=en
It worked, but I'm not sure about the app.
Any other suggestions on another method, or google play app, that will make this work?
Thanks

That app is real iffy, unfortunately. The nook hd will work well with Bluetooth keyboards while on a stock rom, however the keyboard has to be android specific. Something about the way the Bluetooth is setup. If you root the device and put cyanogenmod rom on the nook hd, those restrictions no longer pose a problem, and any bluetooth keyboard will work
Sent from my Nexus 5 using XDA Free mobile app