Replay
Replay is a macOS audio creation app for making AI voice covers, training voice models, and generating music on your computer.
What is Replay?
Replay is a macOS audio app that helps users create AI voice covers, train voice models locally, and generate music from within a desktop workflow. It is aimed at creators, hobbyists, and audio experimenters who want hands-on tools for remixing vocals and building model-based music projects. Common uses include separating vocals from instrumentals, adjusting pitch settings for covers, training models with source audio, and exporting generated results for later editing or sharing. Replay includes settings for render devices, stem processing, and model selection, so users can tune performance and output quality to match their hardware and project goals. The app fits best in creative audio workflows where users want local processing rather than relying only on a browser-based tool. Paulson Court Inc. publishes the broader Weights service that documents Replay as a local creation app.
Key features
- Create AI voice covers from existing songs
- Train voice models locally for music projects
- Separate vocals and instrumentals for remixing
- Adjust pitch and processing settings for different voices
- Choose render devices such as CPU, CUDA, or MPS
- Generate music inside a desktop workflow
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Safety overview
Status: Mostly safe
Replay is used for local audio processing and model-based music creation, so higher CPU, GPU, storage, and memory use can be normal during training or rendering. It may download supporting model files or other app resources, and projects can include imported audio you care about, so keep backups of your source files and exported work. If you no longer use Replay, removing it is usually straightforward, but saved models, downloaded assets, and project data may remain in Library folders until you remove those separately.
Recommendation: Keep Replay if you actively create AI covers, train voice models, or use its local music tools. If you stopped using it, you can remove the app and then clean up leftover support files to recover space, especially if it has downloaded models or other large assets.
Common paths
/Applications/Replay.app~/Library/Application Support/Replay~/Library/Caches/com.replay.Replay~/Library/Preferences/com.replay.Replay.plist
Cache paths
~/Library/Caches/com.replay.Replay
Support paths
~/Library/Application Support/Replay
Preference paths
~/Library/Preferences/com.replay.Replay.plist
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