My app is around 1.5MB at the moment. Is that on the higher size?
What is the average size for an Android app and is there an upper limit placed on it by Google?
Average Android and iOS file size Of all mobile apps published on the app stores, the average Android app file size is 11.5MB.
A large APK has no relationship of slow runtime performance. It depends how you manage the resources. However, a large APK does impact Sales Performance, as users prefer to download smaller apps in Google Market.
The file size limit is now 50MB for APKs that target Android 3.2 and lower (API level 13 or lower). For APKs that target Android 4.0 and higher (API level 14 or higher), it's now 100MB. If a developer can't support all devices with a single APK, he or she can upload multiple APKs using the same app listing.
We found that smaller APK sizes correlate with higher install conversion rates, with an even larger impact on conversion rates for users in emerging markets. As many developers are shifting their focus towards expansion into new markets, particularly emerging markets, it is important to be cognizant of your app's size.
Amazingly, users can find apps with less than an Android app size of 40 MB on the user’s device. To develop a dedicated Android Go app, developers need to develop an APK with the same package name and signing certificate as a regular app, but with a different version code.
Now let’s have a detailed look at the ways to reduce android app size or reduced APK size Android during app development: Proguard is considered one of the most significant tools to reduce APK size. It reduces the source code files to a minimum and can reduce the file by up to 90 %. When using “Proguard”, use it effectively with the variants
The average app file size is now 38MB for iOS mobile apps and 15MB for Android mobile apps. All mobile apps published on the app stores, the average Android app file size is 11.5MB. And the average iOS app file size is 34.3MB.
With the use of Android App Bundles, the restriction for compressed download size is 150 MB. The app bundle can’t be used with APK expansion files. To gauge the attention of a new and growing audience, Google launched Android Go.
I don't know about the average or optimum size of an apk file but an apk file of or upto 50 MB is currently supported. As per the Android Market for Developer Help;
APK file size: Maximum supported size is 50MB.
Source: Android Market for Developer Help
Update (06 March 2012):
As of 05 March 2012, by using the new concept of APK Expansion File, an app (not an APK) can be as big as 4GB. See the Android Developers Blog for details.
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