Tembry Practice Tracks

Tembry turns your own local audio into practice tracks you can keep and share on iPhone and iPad.

CHANGE SPEED AND KEY INDEPENDENTLY Slow a phrase without lowering its pitch, or move it into a comfortable key without changing its speed. Choose 50–150% speed and −12 to +12 semitones. Exact values, incremental controls and reset keep adjustments predictable. Time stretch and pitch shift are real audio effects, not playback labels.

WORK ON THE PART YOU NEED Choose start and end times from the source waveform context. Set output gain from −18 to 0 dB. Render and audition the result, pause or repeat it. Changing settings requires a new render, so the file you export matches the settings you heard.

SAVE YOUR PRACTICE VERSIONS Keep local source copies and named variations for a slower warm-up, a different key and performance tempo. Reopen and rename tracks; load, rename and delete variations. The library starts empty. An optional original synth study is clearly labeled and processed by the same engine as imported audio.

TAKE THE AUDIO WITH YOU Share a real 48 kHz, 16-bit PCM WAV through the system share sheet, or export a ZIP containing the WAV, Settings.csv, Settings.json and Readme.txt. The package records the source range, speed, semitones and gain. It contains a finished result and settings, not original audio or an editable library backup.

One upfront purchase. No subscription, ads, account, analytics, tracking or developer-server upload.

Supports local WAV, AIFF, M4A and MP3 when decodable by iOS. Mono or stereo, 0.1 seconds to 5 minutes, 160 MB per source file. Up to 20 tracks, 30 variations per track and 1 GB local library storage. Output length follows the selected source range and speed. Effects can introduce artifacts; audition results and keep original files. Gain headroom does not guarantee no clipping.

Tembry does not import streaming-service or DRM audio, record, detect musical key, separate stems, transcribe, edit MIDI or score performances. Use audio you have permission to process and distribute.

Discovery signals