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KryptoPrefs is an open source Kotlin library for handling encrypted SharedPreferences in Android.

Features

• Lightweight library (~70 KB) with no dependencies.
• High compatibility (API 9 to API 29).
• Modular: Use the provided algorithms or make your own.
• Usable from Java and Kotlin.
• Supports the Android Keystore.
• KryptoContext for higher level features:
  • Supported types: string, int, long, boolean, date, double, float, short, byte, char, enum and json.
  • Types can be nullable.
  • Types can be memory backed.
  • Types can be observed.
  • Custom types with your custom transform (e.g. JSON).
  • Asynchronous reads and writes.

30 custom interpolators to make motion look more real on Android. This small library is a port of Robert Penner's easing equations to kotlin on Android to add flavors to your animations, and it's based on https://easings.net

Be sure that your user is awake before disturbing it with soundy and vibrant notifications!

Before this library, QuitNow! and lots of apps were sending notifications when the user was sleeping... and HEY! That makes people angry.