live piano continuation on iphone only really works if it responds fast, so on-device generation makes sense here. the piano-specific MIDI handling seems well judged too, especially folding sustain into note duration. a small in-app cheat sheet for the sampling modes would help when prompts are short or output gets loopy.
RollTab
Real-time AI Piano Autocompletion for MIDI Keyboards on iPhone/iPad
46 ratings3.70
Saves598
CategoryAI
PlatformWeb
PricingFree
RollTab is an app that uses a 125M-parameter transformer model to autocomplete piano performances in real time from MIDI input. It runs fully on-device on iPhone and iPad, enabling musicians to play a few notes and have the AI generate musically coherent continuations interactively. The app focuses on classical piano-like MIDI data, uses an efficient note-level tokenization scheme, and incorporates advanced training techniques for quality continuations.
real-time
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CategoryAI
PlatformsWeb
PricingFree
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ListedAugust 2026
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