Lanefold: Sprint Stopwatch

Lanefold is a sprint stopwatch for coaches who time more than one athlete at a time. Start a whole heat at once, tap a lane for each lap, swipe it at the finish, or let the phone's camera stop the time at the line. It works as a lap timer, a split timer and an interval timer, and your times stay on your phone.

TIME A WHOLE GROUP FROM ONE BOARD

Every athlete gets a lane with a name and a running time. Tap anywhere on the row to mark a lap; the time holds for a moment so you can read it, then keeps running. Swipe the row toward the finish line to lock the final time and see the place. When the heat is done, Next heat saves it and clears the board in one tap, so there is no reset button that can wipe your times. Type a name and press Enter to add the next one, or paste a whole list. Track and field coaches, swim coaches and team-sport coaches use the same board.

LAPS AND SPLITS, BOTH ALWAYS SHOWN

Each mark keeps the lap time and the split from the start, which makes Lanefold a proper lap timer for repeats and for 400 m work. Undo the last lap, or set a lane to DNS, DNF or DQ. Forgot to tap on time? Edit a mark afterwards: the sheet shows "edited, was 17.84", so the original is never lost. Time is read from the phone's clock, not counted tap by tap, so it keeps running in the background and through a locked screen.

A CAMERA GATE FOR THE FINISH LINE

Stand the phone upright on the finish line, drag the gate line into place and arm it. The camera watches one thin line, so you can time with a single phone, with no pairing, no Bluetooth and no login. Every crossing becomes a finish strip: a picture of the line over time. Drag the cursor to the athlete's chest and the time follows, frame by frame. An accuracy screen measures this phone's real frame rate and shows the resolution to expect, instead of promising one.

HAND TIMES THE WAY COACHES WRITE THEM

Hand times are rounded up to the next tenth and marked with an h, as on a printed result sheet. Choose how hand times compare with gate times: a statistician's conversion (+0.24 under 300 m, +0.14 from 300 to 799 m), a flat +0.24, or off. Each result also stores its start type, such as tap at the flash or first movement.

SPRINT TIMER AND INTERVALS

Use it as a sprint stopwatch for 10, 20 and 30 m dashes, or set a distance, laps and a start type and run reps on a send-off or a fixed rest. As an interval timer it shows a pace clock that counts down to the next send-off and flags a missed one. Set a target time and see at a glance whether each rep was slower, on target or faster. Templates cover 6 × 200 m on 2:00, flying 30 m and 8 × 50 m swim sets.

SESSIONS, SHARING AND EXPORT

Every heat is saved automatically in the history, with the fastest mark and the timing source on each session. Share a CSV with every mark, a PDF result sheet on A4 or Letter, or plain text for the team chat. Finish images stay out of exports unless you switch them on. Back up everything in one file and restore it on another phone.

UNITS AND LANGUAGES THAT FIT WHERE YOU TRAIN

Metres or yards, 25 m, 50 m or 25 yd pools, kilometres or miles, m/s, km/h or mph, A4 or Letter. Defaults follow your region and every unit can be changed on its own. Lanefold speaks 16 languages and has a day theme and a dark floodlight theme with large, readable numerals.

OFFLINE AND PRIVATE

Lanefold has no account and does not even ask for internet access. Names, times and sessions stay on your phone. The camera is used only while the gate screen is open, and finish images are deleted after 30 days by default. This version is free and has no ads.

Lanefold is a practice and training stopwatch. It is not a fully automatic timing (FAT) system and is not meant for official results or records. Accuracy depends on the phone, the light and where you stand, so check anything that matters against a second watch. Lanefold is not a medical device and does not diagnose, treat, cure or prevent any medical condition.