TrackSpeed vs LapLync

Time your sprint sessions with the iPhones you already have. TrackSpeed uses camera crossing detection to record runs and laps, with results you can review, compare, and share. TrackSpeed offers in-app subscriptions for timing access. You can review available plans in the app before purchasing. SET UP YOUR COURSE Use one iPhone for laps across a single camera line, or connect multiple iPhones for start, split, and finish gates. Choose your distance and add athletes to keep their results organized. CHOOSE YOUR START - Flying Start: Cross the start phone's camera gate. - Touch Release: Hold the start phone's screen, then lift your finger. - Countdown: Start on the beep after 3, 2, 1. - Voice Command: Follow spoken starter commands; timing begins on GO. - In-Frame Start: Stand at the front-camera gate, then cross the on-screen line. REVIEW YOUR TRAINING Save sessions in History, review run times and available splits, and follow your personal bests. Repeat a saved session or choose a training template for your next workout. SHARE YOUR RESULTS Export session results as CSV or share a result card. Import a run video, mark its start, and create a video with timing overlays to save or share. Built for athletes and coaches working on sprint speed, track and field, and team training. Terms of Use (EULA): https://mytrackspeed.com/terms Privacy Policy: https://mytrackspeed.com/privacy

LapLync keeps every device on the same clock — precisely. Whether you're timing sprint drills on the sideline, running a swim meet, or coordinating a field exercise across multiple stations, LapLync starts all devices at exactly the same millisecond and keeps them together even when connectivity drops. FOR COACHES AND TRAINERS Hand athletes their phones, share a 6-digit room code (or let them scan your QR), and tap Start. The 3-2-1 countdown fires on every screen simultaneously. Laps and splits are logged automatically — no additional hardware, no manual data entry. FOR COMPETITION TIMEKEEPERS AND OFFICIALS Assign devices to each judge station or timing post, create a room, and every device runs in perfect sync whether they're on the same venue Wi-Fi or each using their own mobile data. Sub-50ms precision, anchored to Apple's NTP time servers. NEVER DROPS — THREE-LAYER RESILIENCE LapLync's connection system degrades gracefully so measurement never stops: • Bluetooth + Wi-Fi (5–30ms): used first when devices share a local network • Internet via WebSocket (30–140ms): auto-switches when devices aren't on the same network • Independent mode: if all connectivity fails, each device keeps running from its NTP anchor — recordings merge automatically when the connection restores A brief "Reconnecting…" banner appears. The stopwatch never pauses. NO ACCOUNT REQUIRED Create a room and share the 6-character code by voice, chat, or QR scan. Participants join in seconds. No sign-up, no password, no email address. When the session ends, the room disappears. UNDO OR DELETE A LAP Recorded the wrong lap? Tap Undo right after it's logged (can be turned off in Settings), or long-press any lap — or swipe in the full lap list — to delete it. The host can delete any lap; participants can delete their own. Deletions sync to every device. HANDS-FREE LAP RECORDING Record laps without touching the screen: the volume buttons, a Bluetooth shutter remote, or a keyboard/page-turner remote. Optional and off by default — turn it on in Settings. LIVE ACTIVITY Watch the running stopwatch right on your Lock Screen and in the Dynamic Island. Optional — turn it off anytime in Settings. WHAT'S INCLUDED Free • Rooms with 2 devices — you and one more • Join any room as a participant, as often as you like • Synchronized start, lap recording, and split times • Full connectivity: local Bluetooth/Wi-Fi, internet relay, and automatic fallback • Your 3 most recent sessions, saved locally LapLync Pro — a one-time in-app purchase • Rooms with up to 8 devices • CSV export — share via AirDrop, Mail, or any app • Unlimited session history, saved locally Only the person who creates the room needs Pro. Joining is always included — hand a phone to anyone and they can take part. No subscription, no ads, no account. PRIVACY FIRST LapLync uses only your device UUID and device name — to identify and label your device within a room. They are kept in temporary session state while the room is active and deleted when the session ends. No location data, no contacts, no tracking, no account. Requires iOS 17 or later.