OnTrack Run Interval Timer vs Running Pace Calculator Splits

Run your track intervals by ear. OnTrack is an audio-first interval timer for track runners. Set your reps, rests, and target pace — then put your phone away. OnTrack beeps you through every rep, every recovery, and every checkpoint, so your eyes stay on the track instead of your screen. No subscription. No ads. No account. Premium is a single one-time purchase. HEAR EVERY REP • Countdown beeps before every phase change, and a clear cue when it switches • Distance checkpoint cues inside each rep — every 100m, 200m, or 400m, timed from your target pace • Works alongside your music BUILT FOR THE TRACK • Warm-up, main set, and cool-down in a single preset • Repeat blocks for sessions like 8×1000m with 400m recovery • Set each phase by time, pace, or distance • Pace checkpoint table: see your split at every 100m before you start New to OnTrack? Your first launch includes four ready-made sub-3 marathon workouts — Yasso 800s, 1K repeats, 2K repeats and a tempo run. Edit the paces to match your level. GLANCEABLE WHEN YOU DO LOOK • A full-screen color for every phase — warm-up, interval, rest, cool-down • A huge timer with high-contrast text that stays readable in bright sunlight • Hold-to-pause and hold-to-stop, so a bump in your pocket never ends your session PRIVATE BY DESIGN • No GPS, no sign-up, no account • Your presets and workout summaries are stored on your device • No ads and no analytics tracking your training FREE AND PREMIUM Free: build and run complete workouts with every block type while the app is open. Premium (one-time purchase): keep the workout running — with every audio cue — when the screen is off or the app is in the background. PERFECT FOR • Track repeats like 8×400m, 6×800m, or 5×1000m • Tempo and goal-pace sessions • Runners who want a dedicated, distraction-free audio pacer alongside their watch GET STARTED 1. Start from a ready-made workout or create your own preset: warm-up, main set, cool-down 2. Check your pace checkpoints 3. Hit start, pocket your phone, and run by ear

PREMIUM — PURCHASE REQUIRED: All features described below are part of Pro and require a purchase: a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase. You don't need another app to record your runs. You need the math right: the exact pace that gets you across the line at your goal time, the splits that get you there without blowing up in the final third, and an honest prediction of what you can actually run. RunSplit is that calculator — built for the week before the race, not the race itself. No tracking, no sensors, no watch required. Type your numbers, get your answers, write them on your arm. WHAT YOU GET • Solve any two of pace, time and distance for the third — a 3:49 marathon becomes 5:26/km or 8:45/mi in two taps, with km/h and mph alongside. • A full split table for your goal time: every kilometre or mile with its pace and elapsed time, so you know 10K in should read 49:40 — and whether you're ahead of yourself. • A negative-split slider: start a few percent easier, finish faster, and see the whole fade charted before you commit to it on race day. • Race predictions from a result you've already run — enter your 22:30 5K and Riegel's endurance formula projects your 10K, half and full marathon. • Six training pace zones from your threshold pace, following the intensity tiers in Jack Daniels' Running Formula — recovery through repetition, in your units. • Treadmill incline converted to equivalent flat-ground pace, so 5:00/km at 4% grade finally gets the credit it deserves. Save your race plan — distance, goal, splits and all — and reopen it any time before the gun goes off. PERFECT FOR • The marathoner deciding, two weeks out, whether the goal is 3:59 or reality • Half-marathon runners chasing a personal best with an even or negative split • Coaches who write splits for athletes and are tired of spreadsheets • Treadmill runners keeping winter workouts honest at real outdoor effort WHY NOT JUST A TRACKING APP? Trackers tell you what you ran after it's over. RunSplit answers the question you actually have beforehand: what should the clock read at every marker if today goes right? It's the difference between reviewing a race and planning one — and planning is where the PB is made. PRIVATE BY DEFAULT Everything is computed on your iPhone. No account, no sign-up, and your saved race plans never leave the device. PREMIUM (PURCHASE REQUIRED) RunSplit Pro unlocks the race-time predictor, training pace zones, the treadmill converter, negative-split planning and unlimited saved plans. Choose a weekly or yearly subscription, or a one-time lifetime purchase — every option unlocks everything. Pick your race, set your goal, and walk to the start line already knowing every split. Download RunSplit and do the math before the gun. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia