Distance, time, pace and speed, always in sync. Change any one and the others follow. A lock holds the value you care about while you work out the rest.
On a relay team, or waiting for a runner at a race? ETA tells you the clock time they reach you, with a live countdown that carries on to the lock screen and up to three alerts. Tap when they arrive and the leg is saved with the pace they really ran.
FREE
• Four linked calculators: tap any value to edit it, tap a unit to switch between miles and kilometers. Every card keeps its own units.
• Race distances built in: pick 400 m, 5k, 10k, half-marathon, marathon, or an ultra from 50k to 100 miles from a set of race bibs.
• Share card: send your distance, time and pace as an image.
• Every metric in its own color, in light or dark mode to match your phone.
• Your numbers are still there the next time you open the app.
• All calculations work offline. Seven languages.
PRO (one-time purchase, no subscription)
• Splits: plan even, negative or positive splits at any interval from 100 m to 10 miles, by halves, thirds, quarters or fifths, or an interval of your own, then share the table as an image or as text.
• ETA: made for relay exchanges and race spectators. Each runner gets a card with the arrival clock time, a live countdown, estimated progress, up to three alerts and a note. The countdown also shows on the lock screen and as a badge on the main screen. An optional Alarm rings like an alarm clock, even on silent and in Do Not Disturb. Tap Arrived to save the leg with the pace actually run; finished legs stay in a list you can edit and share.
No ads and no account. Anonymous usage analytics can be switched off in Settings.
It's just me, a runner, building the pace calculator I want to use. Send feedback from inside the app and I'll answer.
Distance, time, pace and speed in sync. Lock one value and solve for the rest.