iGrand Piano / iLectric Piano 50 % until 30th of September

Would warn you that IK Multimedia do put a lot of publicity in their paid products as well...
Do not know if this is the case when it comes to these two but probably.

Google Play:
https://play.google.com/store/apps/details?id=com.ikmultimediaus.android.igrandpianofull

​https://play.google.com/store/apps/details?id=com.ikmultimediaus.android.ilectricfull