Running Intervals & HIIT Coach

Your AI running coach. Custom intervals, HIIT, fartlek, hill repeats — built around your goal in seconds.

AI running coach that builds custom interval workouts in seconds. Describe a goal, paste a screenshot, or pick from 50+ HIIT, fartlek, tempo, and hill workouts. Full warm-up, main set, cooldown — runnable on Apple Watch.

Ever found a great running workout online… but couldn't actually track it in your running app? Yeah — same here. So we built this app we wished existed.

Running the same distance at the same pace every day doesn't make you faster. It just makes you better at running the same pace.

Break the plateau. Get faster, stronger, and fitter with intervals, HIIT, fartlek, hills, and much more.

EVERY RUN IS A NEW CHALLENGE Every workout here has a specific goal and a different feel — so you actually train different muscles, systems, and skills instead of just logging miles. Your running workout is fun now :)

Speed: 200m pops, ladders, strides, sprint finishers Strength: Hill repeats, power builders, switchbacks Stamina: HIIT, Cruise intervals, tempo waves, Yasso 800s Endurance: Progressive aerobic, negative splits, scenic cruises Fun: Fartlek games, stoplight play, music flow runs

Each workout has a warm-up, main set, and cooldown — with clear effort guidance through every phase.

AI WORKOUT GENERATOR Tell the AI coach what you want — "30 minutes, hill repeats, moderate" or "a fartlek that doesn't bore me" — and get a runnable workout in seconds. Paste a screenshot of a workout you saw online and we'll convert it into intervals. Describe a goal and we'll build a plan around it.

TRAIN BY EFFORT, NOT NUMBERS Every interval shows a target effort (80% for work, 30% for recovery). No heart rate monitor needed. GPS pace lies anyway — effort just works better.

AUTO-LAP BY DISTANCE OR TIME Distance intervals auto-complete when you hit 200m, 400m, 800m, or whatever target you set. Time intervals count down with precision. No fumbling with lap buttons mid-stride.

AUDIO & HAPTIC CUES Get notified at interval start, halfway, and end. Works with your screen off, works on Apple Watch. Built for running outside, where you can't keep glancing at a screen.

APPLE WATCH COMPANION Run straight from your wrist. Leave your phone behind for track sessions — the Watch app handles everything on its own.

CLEAN, GET-OUT-OF-THE-WAY DESIGN Big, glove-friendly controls. Dark mode. One-screen run view with your current interval front and center, and what's next right there too.

AFTER YOUR RUN Review every completed interval — distance, time, pace. Auto-syncs to Apple Health.

WORKOUT TYPES

Open Run: Free running with manual laps Tempo: Sustained-effort training Intervals: Structured speed work Fartlek: Mixed-pace playful running Hills: Uphill repeat sessions Long Run: Extended endurance efforts

3 DURATION OPTIONS

Quick (10–15 min): Short, sharp sessions Standard (20–35 min): Complete workouts Long (40–60+ min): Extended training

WHO IT'S FOR

• Runners looking to improve their times
• Runners who like variety and fun
• Amateur athletes who want to gain leg strength and power
• Anyone looking to improve overall fitness and health
• Anyone looking to lose weight with HIIT (High-Intensity Interval Training)
• Anyone who wants to run intervals without 10 minutes of setup
• Anyone tired of complex running apps that feel more like Instagram

No social feeds. No data mining. Just running. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/