Midi vs PracticeBell

Midi-Morf is a four-track groovebox for your phone. Build a beat, chop a break, sample your voice and play it all live, with no extra gear. REMIX GRID Load any loop and it splits into 16 pads, locked to the tempo. Tap a pad to jump there, hold two to loop between them, and play rows against each other. Each row can LOOP, play a single SLICE, or GATE while you hold. Record your moves with two pattern recorders, store whole setups in recall slots, and everything stays on the beat. SAMPLER Record from the mic or load your own WAV files. Play a sample across the keys, as one-shots, or chopped into slices. Say "macaroni and cheese" into it and turn it into a beat. DRUMS A synthesized drum machine with kits from 808 and Boom Bap to Jungle, House, Trap, Lo-fi, Disco and Techno, played from a step grid with swing. SYNTH A wavetable synth with a library of presets — basses, keys, pads and leads — and deep editing when you want it. FOUR TRACKS, EIGHT SCENES Give each track an instrument and a sound. Launch clips and scenes in time, mix with volume, inserts and delay/reverb sends, and record what you play. PLAY IT YOUR WAY Step sequencer, a break slicer, a piano roll and drum editor, plus the original Midi-Morf controllers: Morf-Chord, Rose-Chord, Strum-Chord, Morf-Pad and Dual M-Pad. Tilt the phone to move the sound. PERFORM Punch in master FX live: filter, stutter, tape stop, delay throw, reverb wash, bitcrush, trance gate and vinyl brake. GET STARTED IN A MINUTE Take the tour and it builds a beat with you, step by step. No subscriptions. No in-app purchases. Everything is included. Made by Retro Relic — retro-relic.com

The five bars in the Bach invention had been fighting back all week. This morning she opened PracticeBell, tapped the Invention No. 8 checkpoint, and played the passage once at ninety-two beats per minute. It came out ragged, so she graded the take Uneven, named Pulse as the cause, and wrote one line: the right hand rushed the turn. Two clean runs later the checkpoint advanced her four beats and spelled out what to rehearse next. She warmed up against the metronome, pushed the tempo ramp until her scales held, tuned one shaky arrival against the drone, then logged the session to the piece. A handful of honest records, and tomorrow knew where to begin. PracticeBell is built around that loop: name a real problem, gather honest evidence, and let the counts decide when tempo is allowed to rise. - Passage Bench turns a bar range into a checkpoint with a tempo floor, a target, an advance step, and a clean-run gate - Grade every take as Clean, Uneven, or Breakdown, tag its musical cause, and read a deterministic next-session instruction - Metronome with time signatures, subdivisions, accent patterns, tap tempo, and selectable click voices - Tempo Ramp and Gap Trainer for gradual speed work and internal-time recovery - Records live in a private local store; PracticeBell adds no advertising or analytics SDKs and asks for no sign-in, and the microphone feeds only the live tuner - Chromatic tuner and sustained drone for intonation, with scale, interval, and tempo-term references - Piece library holding composer, key, signature, BPM target, status, and per-piece history - Plan Lab, routines, tempo programs, goals, streaks, and CSV or PDF export of your own sessions