Before you play
Use a compatible iPhone running iOS 17 or later, allow Camera access and mount it securely. Check the actual App Store listing for your device's download eligibility.
ONE IPHONE · FREE LONG-TERM
One phone. One useful angle.
You do not need a multi-camera setup to try FanEye. Single-phone challenge replay is free long-term.
Free to start · Optional in-app subscriptions for more phones.
Choose one important line
Keep a sideline or baseline visible. Review the preview for glare, dark areas and obstruction. Avoid placing equipment in players' movement paths.
Start → Challenge → Replay
Start recording before the rally. After the disputed point, tap Challenge, slow the playback and step through frames to inspect the relevant moment.
Keep a clip when you choose
Choose Save and allow Photos access to keep a short slow-motion clip in your album. It does not automatically save the full match.
Continue the game
Return to live view after review. Recent temporary footage is overwritten as recording continues. Saved Photos clips are managed separately in Apple's Photos app.
Need another angle?
A Free online room can connect 2 phones. More angles require more recording phones; an independent Professional controller does not add a camera angle.
Replay is a reference, not an automatic verdict.
FanEye does not automatically detect the shuttle landing or decide IN or OUT. Players or officials review the footage. Device, lighting and network conditions matter.
Video and privacy →