The best alternatives to Jambl are FL Studio Mobile, Audulus, and Reason 8. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Multilingual Speech-to-Text API with superhuman accuracy
FL Studio Mobile is DAW for Android and iOS where you can create and save complete multi-track music projects. Features include recording, sequencing, edit, mixing and rendering complete songs.