Lap Dog!

Race & lap timing, no hardware

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Run race day from your phone: tap each lap, hand timekeeper and spotter links to helpers, import your roster, and share live results. No transponders, no spreadsheet. Lapdog turns your phone into the timing booth for any lap race or time trial: criteriums, cyclocross, run laps, beer miles, club TTs, whatever you run. > > TIME BY THE LAP > Tap a big button as each racer crosses the line. Splits, totals, and live standings update instantly. No transponders, no chip mats, no spreadsheet afterward. > > MANY HANDS, ONE RESULT > Hand a timekeeper a link and put them on a lane or a rider; every tap merges into one live leaderboard in real time. Put a spotter up-course with another link to flag riders coming to the line, and your timekeepers get a heads-up and a buzz so nobody misses a bunch finish. > > BUILT FOR REAL FIELDS > Set lap counts per category (juniors can race fewer laps than seniors in the same start). Mass-start everyone, break the field into waves on their own clocks, or run a true time trial with interval or tap-to-start. Fix the gun or a rider's start mid-race when something goes sideways. > > ROSTERS WITHOUT RETYPING > Import from BikeReg, a CSV, or a Google/Office sheet, or build a sign-up form in a minute and share the link. Auto-number bibs, check riders in at the line. > > SHARE IT > Every event gets a public results page: live timing during the race, a clean results sheet after, plus CSV and a printable version. Re-share the link any time. > > Free to start. Works on the web too, at lapdog.cc.

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The developer, Limestone Labs LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    Limestone Labs LLC
    Size
    12.9 MB
    Category
    Sports
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Limestone Labs LLC
  • Developer Website
  • Privacy Policy

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