MusicForge is a music stand for working musicians, available as both a web app and a native iOS app. The catalog is more than 750 songs in chord-chart form, and any song can be transposed to any key on the spot — no scrolling through a binder, no marker-and-Sharpie rewrites between sets.
Setlists sync across devices in real time. One person on stage acts as the leader: when they change the chart, change the key, or jump to the next song, every follower's screen catches up within seconds. Useful at gigs where the rhythm section is glancing at iPads in stands and the singer just called an audible.
Other things in the box: a built-in metronome with subdivision feels for swing, triplets, and sixteenths; offline caching so flaky venue Wi-Fi doesn't kill the show; and per-song memory for keys, octave, tempo, and display preferences.
The web app also includes SongForge, a writing surface for creating new chord charts. SongForge is web-only — the iOS app is read-only on that front for now.
Source charts come from Eric Benson's open library of lead sheets; conversion into MusicForge's chord-chart format is automated.