Instant sync.

No on-stage manual clockstart, no cables, no worries.

SyncTimer™ pulls every iPhone in the room into a ± 5 ms grid, so you can start, stop, and cue stopwatch pieces without showing a visible onstage downbeat ever again.

SyncTimer v0.5 currently features:

  • Clock-perfect countdowns – Pre-roll timers snap your ensemble into ride-off position with precision.

  • 30-device auto-lock – LAN/Wi-Fi or Bluetooth; no cables, routers, or stage boxes needed.

  • Cue-list playback – Trigger silent hits and rehearsal markings right from the conductor’s phone.

  • Band-room ready – 50 % Apple School Manager discount and volume-licence delivery—IT just signs off and hits “install.”

  • Privacy by default – No logins, no cloud, no data leaves the stage.

Multi Device Lock. Smart Controls.

SyncTimer™ features customizable UI, including a performance oriented landscape mode with only the info you need to see during performance: time, upcoming cues, and stopdown events.

The bigger the ensemble, the longer the “Ready? … 3-2-1-GO!” chaos. Mis-counts waste rehearsal minutes, and the further you stand from the conductor, the worse the drift. SyncTimer™ solves it in a single tap:

  • Instant group lock – Up to 30 iPhones snap to the leader within three seconds over Wi-Fi, Bluetooth LE, or Bonjour.

  • Powerful, musician-focused controls – lock your countdown, stop, or reset buttons for peace of mind during performance. No other stopwatch app currently offers this.

  • Lock all child devices to ensure everyone makes it through the performance without accidental starts and stops.

  • Auto-heal – Drop a phone, swap a hotspot, or walk out of range; the moment a device returns it re-aligns without manual resets.

Cue-List Control

Program once—hit every mark, every time.

SyncTimer™ lets you draft a timeline of on-the-dot events—stops, cue points, and automatic restarts—right on your phone before the run-through starts.

  • One-tap event cycling – The red → blue → green button toggles Stop ▸ Cue ▸ Restart so you can lay down markers in seconds.

  • Drag-to-reorder carousel – Need to shuffle movements or bump a fermata? Just slide the chips left or right; no re-typing.

  • Locked to the global grid – Every event fires off the same ± 3 ms master clock that keeps the ensemble in sync, so nobody drifts ahead or behind.

  • Non-destructive during performance – Event buttons disable the moment the countdown starts, preventing accidental edits mid-show.

Whether you’re cueing electronic hits in a multimedia piece or timing blackout-to-blackout transitions, the Cue-List keeps you on schedule with conductor-level confidence.

Join 10 beta musicians now!