BolTimer vs Video Sprint Timer

BolTimer is an electronic timing app for track & field and swimming training. Record at a high frame rate, then judge the result frame by frame on your phone. TRACK • Finish-line recording up to 240 fps on supported iPhones • Choose sprint or distance: distance races record the start and splits on a timeline • Flash or sound start detection can mark 0 time automatically; you can also open and warm up the camera first, then record manually. Distance races can be filmed in segments and exported as one video • Frame-by-frame review with up to 8 lanes • Drag a result onto a lane, recalibrate the start frame, fine-tune within ±3 ms • Copy results as text or export video with a timing overlay SWIMMING • One phone follows one swimmer; several phones stay on the same clock by filming the same starting flash • Mark takeoff, entry, breakout, turn touch, turn push and finish frame by frame • Reaction time, flight time, underwater phase, lap splits and total time • Count left and right arm entries separately, with a check for missed or accidental double taps • Stroke count, distance per stroke and SWOLF per lap IMPORT AN EXISTING VIDEO • Pick a clip from your library, choose the start frame yourself, then judge it like a live recording • Slow-motion clips are read at their real capture rate, so times are not stretched • Short clips are prepared for smooth frame-by-frame stepping HOW IT WORKS 1. Auto start: align the flash zone, tap Stand By, recording begins after the gun 2. Manual start: open and warm up the camera, wait until Ready, then tap Record (the start flash must be in the clip) 3. Step through frames and mark the moments you need 4. Copy results or export annotated video to Photos; distance races can merge all clips into one export REQUIREMENTS • iOS 17.0 or later • A real iPhone with a rear camera (the Simulator has no camera); the highest frame rate available depends on your model • Camera and microphone permission for timing; photo library permission only when you import or export a video DATA & PRIVACY No account and no sign-in. Recordings and results stay on your device and are not uploaded to our servers. MEMBERSHIP Free sessions included. An optional paid 1-year pass or a one-time lifetime purchase unlocks unlimited use. Both are one-time purchases, not auto-renewing subscriptions. Purchases are processed by Apple. Support: https://www.qinggetech.cn/boltimer-support/

Measure sprint split times from video you shoot on your phone. No more stopwatch reaction-time errors - step through the footage frame by frame and confirm every time with your own eyes. - Frame-by-frame timing you can trust Step through the video one frame at a time and mark the exact start and finish moments. Set the recording frame rate (30/60/120/240fps) and get times down to 1/240 of a second per frame. - Two measurement modes Photo Finish (finish times): mark the start, then record each runner's torso crossing the line. Multiple runners are ranked automatically. Split Timing (laps/splits): add marks at each checkpoint to get split and cumulative times. Enter distance and step count to see cadence (steps/s), stride length (m/step), and section speed (m/s). - Record right in the app Shoot with the built-in camera and go straight to measurement. 60fps and 120fps recording is available on supported devices. - Stopwatch for hand timing A stopwatch with large, easy-to-press buttons for the track. Record laps and save sessions with titles on your device. - CSV export Export results as CSV via the share sheet to Files, email, and more. Opens directly in spreadsheet apps. - No login, data stays on your device No account needed. Videos and results are processed and stored only on your device and never sent to external servers. Note: events that happen between two frames cannot be distinguished. Record at a higher frame rate for finer detail. - Pro features (one-time purchase) An in-app purchase unlocks tools that make measuring faster and more precise: * Auto start-signal detection: finds the flash, smoke, or arm-drop frame automatically * Auto crossing detection: finds finish frames automatically * Auto Zoom: register start and finish zoom levels and the zoom changes smoothly while recording * Tracking Zoom: tap a runner to keep them the same size on screen * Contact and flight time: per-step timing in milliseconds * Athlete roster and heat sheets: name suggestions and lane-number auto-fill * Report export: share results as a single image * Speed Curve: graphs speed by section All basic measurement features remain free.