: The developer, Exophase, made the official DraStic free on the Play Store before eventually delisting it.

: If you need the most recent, safe version, look for the Unofficial DraStic Fork on GitHub, which is actively updated for modern Android versions. Review of Official DraStic Features

The best Nintendo DS emulator on Android (DraStic) has been pulled from the Play Store : r/Android

Even though the "PRO" name is suspect, the core engine it likely uses (DraStic) is widely considered the best Nintendo DS emulator for Android.