BolTimer vs SwimLab

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 CUSTOM EVENT TEMPLATES • On single-segment track and swim reviews, switch to Events and mark the actions in your template frame by frame • Built-in templates: track start (reaction, block clearance, left/right foot contact and toe-off, finish) and swim technique (reaction, takeoff, entry, breakout, hand entries, finish touch) • Track: contact time, flight time and step rate; swim: event timeline and intervals • Event trend curves per athlete and template 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 15.6 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/

Film every swim. Time every rep. See what to fix. Put your iPhone on a tripod and swim — SwimLab starts the camera for you, times every rep to the hundredth, and lets you replay it frame by frame. Works for swimmers training on their own and for coaches who can't watch every lane at once. SEE WHAT YOU CAN'T FEEL • Review every rep frame-by-frame, zoom into your catch, your turn, your finish • Mark reaction time, breakout, turns, and the wall — times computed to the hundredth with honest precision labels • Progress turns filmed swims into trends: per event, per set, per season, with a PB timeline and a starts panel RUNS YOUR WHOLE PRACTICE • Type "4×50 free on 1:00" and the set builds itself • The set runner executes repeat sets like a coach with a stopwatch: voice countdowns, every rep filmed, every interval on the clock • Bundle sets into programs and run the whole day as one session • Benchmarks — Start Six, Lactate 50s, Broken 100s, Race Rehearsal — keep every test comparable HANDS-FREE FROM THE WATER • Raise your arms and the camera counts you in — swim after swim without touching the phone • The official start protocol (whistles, "take your marks", start tone) when you want race-day pressure — choose your gun, whistle, and starter voice TRAIN · TEST · RACE • Train holds your sets and programs, Test your benchmarks, Race your meets — search and filter every session by stroke, distance, effort • Look up your official results and import them in a tap; see how practice translates to race day • Share any set as a link — it lands in a friend's My Sets, no account needed SHARE THE PROOF • One tap renders a branded video — feature your time, reaction, or breakout, with a live race clock and the set you swam burned in • Pinch to reframe; real-time or slow motion, sized for Reels, TikTok, and Shorts Built poolside by a competitive swimmer. Your videos and times stay on your phone. Available in English and Spanish.