The best alternatives to SleepBus are Cabin, Pzizz, and Chariot 2.0. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of SleepBus?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Pzizz uses specially designed music, voiceover, and sound effects that change each night, to quickly quiet your mind, put you to sleep, keep you asleep and wake you up refreshed. Recently we've added the "Focus Module;" music engineered to to help you boost your productivity and get more work done. Available for iOS and Android.