Support

Behind the baseline, centred on the court, as high as you can get it. A fence clamp or tripod at 2 m or more works well. Use landscape orientation and make sure all four court corners and both baselines are in the frame. The app shows an outline to help you line up the court.

ReplayCourt uses the motion sensor to check the mount is steady, because calls depend on the court staying in the same place in the picture. Tighten the clamp, shorten the tripod, or move it away from a fence that shakes when balls hit it.

Live calls are available for tennis. Beach volleyball and padel record and analyse matches for review afterwards. If a bounce is unclear, for example because it is hidden or blurred, ReplayCourt shows it as unknown instead of guessing.

1. Install ReplayCourt on both iPhones.
2. Connect both phones to the same Wi-Fi network, or connect one to the other's personal hotspot.
3. Mount one phone at each end of the court, set up the same way.
4. Start a two-phone session on the first phone and join it from the second. Allow local network access when iOS asks.

Check that both phones are on the same network and that Local Network access is turned on for ReplayCourt in Settings › Privacy & Security › Local Network. Some public or guest Wi-Fi networks block devices from seeing each other; use a personal hotspot instead.

Open the ReplayCourt Mac app on a Mac on the same network as your iPhone, then choose the recordings to copy in the iPhone app. Files go directly from your phone to your Mac over the local network. Nothing is uploaded to the internet.

Full matches are large files. Keep both devices close to the Wi-Fi router, keep the iPhone app open and the screen on until the copy finishes, and plug the phone in for long transfers.

Install the ReplayCourt watch app from the Watch app on your iPhone. When a match starts, the live score appears on your watch. The watch must be paired with the iPhone that's recording, or with the iPhone you use to follow the match.

Install ReplayCourt from the Connect IQ store and keep Garmin Connect running on your iPhone with Bluetooth on. The live score is sent through Garmin Connect to your watch. If the score stops updating, open Garmin Connect to reconnect the watch.

• Heat: iPhones can limit or stop the camera when they get too hot. Keep the phone out of direct sun, take it out of thick cases and avoid charging from a hot power bank.
• Storage: a full match can use many gigabytes. Check free space in Settings › General › iPhone Storage before you start.
• Battery: use a power bank for matches over an hour. Low Power Mode can also affect recording.
• Interruptions: phone calls and leaving the app can pause the camera. Turn on Do Not Disturb or a Focus mode while recording.

Video recorded before the stop is kept. Open the match in the app to review it.

Check that the whole court is in the frame, the mount is steady, and the lens is clean. Low light, strong backlight and a ball hidden by a player all make calls harder. ReplayCourt then shows unknown rather than a guess.

No. Recording, analysis, two-phone mode, watch scores and copying to a Mac all work without internet. When it's available, the app checks replaycourt.com for model and settings updates.