Replayer vs. TimeStretch Audio Player
- Replayer is a free media player, usable with self-made or shared compilations of playback tracks with cues, suited for rehearsals, practice and performance. It supports changing the playback speed (time-stretching), but not yet pitch-shifting.
- TimeStretch Audio Player is an audio player aimed at musicians and singers. It's main feature is stretching and pitch-shifting of recorded music. This allows for practicing to playback music in a different key or tempo than in the original recording.
| Replayer | TimeStretch Audio Player | |
|---|---|---|
 |
 |
|
| Pricing Model | Free | Free |
| Track Library | User-created (local files and online media, via URL) | only one piece at a time, only local files |
| Platform compatibility | Web browsers on all major platforms (including iPhone, Android, Windows and Linux) | Web browsers on all major platforms (including iPhone, Android, Windows and Linux) |
| Documentation | Online available | Online available |
| Multi-track player | not available yet | only single-track |
| Own tracks usable? |  (in various formats) |
|
| Recording | Unofficially supported |  |
| Supports video? | |
|
| Loop mode | |
|
| Speed change (slower/faster) | |
|
| Pitch shift / key change | |
in cents or semitones |
Conclusion
- Replayer is a great option to practice multiple parts in multiple pieces repeatedly.
- TimeStretch Audio Player is a great app for practicing single pieces at home. The stretch and loop mode is especially useful to learn difficult parts of a piece.
Both apps are usable directly in the browser or can be installed on a device (as PWA), for offline use.
