For Transferring android app between phones over Bluetooth we mainly want two nifty apps.

Astro
Bluetooth Transfer App.

Astro- It is the leading file explorer of android and I am sure most of you know about it. One of the best and most important features of astro is it helps you to create back up of your installed apps on memory card as an APK file so that you can restore them at the time of crisis. Here we can create an APK file of an individual app and send it over Bluetooth to the other device using this tool.
Steps to Send App APKs Files Via Bluetooth

After download and installed astro on your android, you have to run the astro then press the settings soft key and select tools to open a pop-up window.


Now you select the application backup from the pop-up tool window and wait for Astro to create a list of all android app installed on your android. In the list choose the application you want to send over Bluetooth and click the backup button to create the APK file. you can select multiple applications at a time. Once the backup is complete press the back soft key to return to the Astro home .


















On the Astro home screen, you will see the files and folders in your mounted SD card. Now click to the folder Backups—>Apps to find the APK files you have created above.


















Now, our work with Astro is complete here. We will now use Bluetooth file transfer app to transfer these files over Bluetooth as APK access to Bluetooth are locked on most of the devices by default .After downloading and installation of Bluetooth file transfer app on your android run the app.
In Bluetooth file transfer app navigate to the same folder Backups ->Apps and select the file you want to send. After the selection of files open your Bluetooth and search the device on which you want to send the file. After receiving the file the receiver will able to install these files and run the apps.

Short steps:-

  1. First download and install Astro on your device.
  2. Now run astro and open new pop-up tool window.
  3. Now select the application back-up from pop-up tool window.
  4. Then Astro create a list of all android app installed on your device .Then choose the app you want to send.
  5. Now click the backup button to create the APKs file. After completion back to the astro home screen.
  6. Now click to the folder Backups—>Apps to find the APK files you have created above.
  7. Now close astro and open Bluetooth transfer app, for transferring go to the same folder Backups—>Apps. select the file you want to send.
  8. Now open your Bluetooth and search your friends device and send the files.