Why we're building Afterglow

We're building Afterglow to keep feedback with the audio it refers to. It's an iPhone app for listening to demos and mixes, comparing versions, and writing timestamped notes.

Notes at a specific time

Add a note while listening. It stays with that track and timestamp. Select the note later to play from that point.

You can also label sections, such as a verse or chorus, to find them again without writing a comment.

Mix 2 paused at 0:34 with a note asking to keep the guitar from Demo 1, section labels, and the waveform below. — A note at 0:34 in Mix 2. The screenshots use an example project in the development app.

Compare versions

Keep a song's demos and mixes in one project. Each track has its own notes and playback position.

Comparison lets you switch between tracks, playing one at a time. Labels can mark the same section at different timestamps. If the chorus starts at 0:34 in one version and 0:36 in another, you can go to either directly.

The app doesn't automatically match loudness or tempo.

Mix 2 and Demo 1 in comparison, each paused at its Chorus label: 0:34 in Mix 2 and 0:36 in Demo 1. — Chorus labels at 0:34 in Mix 2 and 0:36 in Demo 1.

Share your notes

Share notes as text with the project name, track name, and timestamps included. You can send them through messages or email. The recipient doesn't need Afterglow to read them.

Audio is shared separately.