Max size of an Android Application

Android Market raises maximum app size to 4GB, APK files still limited to 50MB

Please study these links, you will get your answer:

Android APK size limitation in Google Play

http://developer.android.com/google/play/expansion-files.html

http://www.engadget.com/2012/03/05/android-market-4gb-app-limit/

Update (28 Sep 2015)

The Google Play team (ANDROID DEVELOPER BLOG) ::(GOOGLE) update the max size limit. They are increasing the APK file size limit to 100MB from 50MB. This means developers can publish APKs up to 100MB in size,Please refer this link for more information on Android Developer Blog

Update (As of Sep 28, 2015):

APK files have a maximum file size, based on the Android version that your APK supports: If you can't support all devices with a single APK, you can upload multiple APKs using the same app listing that target different device configurations.

• 100 MB – APKs that target Android 2.3 and higher (API level 9-10 and 14+)
• 50 MB – APKs that target Android 2.2 and lower (API level 8 or lower)

Tip: Users must run Play Store version 5.2 or higher to install 100 MB APKs.

Reference to Play Console Help.

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Old Answer:

See here for details

Currently, the maximum size for an APK published on Google Play is 50 MB.

You can use up to two (2) APK Expansion Files, each up to 2 GB in size, for each APK.

Answer

Summary:

apk: 50MB

expansion files: 2GB

Google Play is increasing the APK file size limit to 100MB from 50MB.