Lapster vs Lapforge

GPS lap timer for cars, motorcycles and karts — on any circuit, with or without a RaceBox. Lapster turns your RaceBox into a complete lap timer and telemetry system. And if you don't own one yet, your iPhone can time your laps too. RACEBOX — ALL THREE MODELS RaceBox Mini S, RaceBox Micro and RaceBox Pro. Connect over Bluetooth or Wi-Fi, pull the sessions stored on the device, and every lap is timed, mapped and saved automatically. NO RACEBOX? USE YOUR PHONE Start a session with your iPhone's GPS and get real lap times on any circuit. Live map, predictive delta, lean angle, and a separate 0-100 acceleration mode with its own personal bests. EVERY LAP, IN DETAIL • Replay any lap on the map at 1x, 3x or 5x • Speed, position and time for every corner • Put your lap next to a friend's and see where the time went • Sector splits, top speed, G-forces and lean angle FOLLOW YOUR CREW Home is a feed of the latest rides of the riders you follow, with their personal bests, comments and reactions. One search field finds riders, tracks, sessions and teams. TRACKS Official circuits with verified records, plus tracks you build yourself — drop the start/finish line and sectors straight onto the map. Every track keeps a leaderboard of the drivers and riders on it. Records and leaderboards are kept separately for cars, motorcycles and karts. TRACK DAYS Find track days, book your spot, and read reviews from drivers and riders who were actually there — with their photos and lap times attached. SHARE IT Send a lap or a whole session with a link, post a story, or export a poster for Instagram. Your profile keeps every stat and badge you have earned. MESSAGES Direct and group chats with other drivers and riders, including voice messages. ALSO INSIDE • Import your existing rides from the RaceBox app (CSV) • Weather recorded automatically for every session • Your garage: cars and bikes, with photos • Available in 14 languages • Lap times to the millisecond • Import rides from AiM loggers (.xrk, .xrz) and Race Studio CSV Free to use. Optional donations if you want to support development. Lapster is not affiliated with RaceBox. RaceBox is a trademark of its respective owner. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Apple Watch: view sessions and lap times, chat with other drivers and riders, and record, play and transcribe voice messages. Includes watch face complications and Smart Stack widgets.

Lapforge turns the phone on your dash into a lap timer for HPDE days, club track days and practice sessions. Press GO, drive through your start line, and each lap is timed from GPS. Lapforge places the crossing between two GPS readings instead of waiting for the next one, so a lap is not rounded to the nearest second. Your best and last lap sit in big condensed digits you can read at a glance, and the circuit is drawn as a racing line with your position on it. Built not to lose a session Every GPS point is written to the phone as you drive. If the app is closed mid-session, the laps are there when you open it again. The screen stays awake while timing, and finishing takes a one-second hold, so a bump with a glove does not end your run. Knows the track Lapforge recognizes more than 350 US road courses, ovals and kart tracks from OpenStreetMap outlines and remembers the start line you set at each one. At a track that is not on the list, set your own line as you cross it. Lapforge Pro • Live delta: how far ahead or behind your best lap you are, updated every second • Sector splits: every lap split into three equal-distance sectors, at any track • Lap comparison: a trace of where each lap gained or lost time against your best • Conditions: air temperature, humidity, wind and density altitude from the nearest National Weather Service station, saved with the session • CSV export of every lap and GPS point Free, with no account: lap timing, best and last lap, track detection, saved start lines and your whole lap history. A share card for your best lap is free too. Phone GPS updates about once a second, and accuracy depends on your phone and the sky. The timing screen shows the current GPS accuracy so you know how much to trust a lap. Pro comes two ways: yearly, where the first 7 days cost nothing, or monthly. Both plans bill again by themselves. To stop one before it bills, cancel it under Subscriptions in your iPhone's Settings with at least a day to spare. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app-factory-privacy-policy.vercel.app/#lapforge