KesselRUN Running
Time-based interval running
Only for iPhone
Free
iPhone
KesselRUN stands out from traditional running apps. It is not another “go farther, longer, slower” distance tracker. It is a free, privacy-first interval running app and HIIT coach built to make every minute count. KesselRUN is the ultimate non-distance alternative to mainstream running apps—and it is completely free and ad-free!
Instead of asking you to jog forever or rack up endless walking miles, KesselRUN guides you through high-intensity run/walk intervals: bursts of hard running, intentional recovery, and repeatable workouts that keep training exciting. HIIT-style running helps you burn more calories in less time, challenge fast-twitch muscle fibers, improve cardiovascular conditioning, and build fitness without turning every workout into a long slog.
Think of it like a coach in your pocket yelling, “Punch it!” — then giving you permission to recover before the next blast.
The Ultimate Audio Freedom: Customizable Spoken Cues:
Most running apps lock you into generic, pre-recorded audio prompts. KesselRUN changes the game. With our fully customizable text-to-speech (TTS) engine, you control exactly what your coach says and when they say it.
Create Your Own Prompts: Type out custom voice commands for interval changes, halfway marks, or countdowns.
Edit Cues on the Fly: Add, tweak, or completely change any audio notification to match your personality, humor, or motivational style.
Hands-Free Focus: Get clear, real-time spoken guidance without ever having to unlock or look at your phone screen.
Why KesselRUN Beats Other Running Apps:
• Interval-First Architecture – Built from the ground up around timer-based interval running, not retrofitted from a GPS distance tracker.
• Fully Customizable Programs – Create structured training plans that match your goals, current fitness, available time, and preferred intensity.
• Fully Customizable Workouts – Tune warmups, cooldowns, run segments, walk/recovery segments, rounds, and timing so your workout fits you.
• HIIT for Maximum Calorie Burn – Short, intense efforts raise workout intensity and make limited training time highly effective.
• Fast-Twitch Stimulation – Sprint-style intervals recruit powerful muscle fibers that steady walking and easy jogging ignore.
• Cardio Without the Boredom – Push, recover, repeat, and finish feeling like you actually trained.
• Privacy-First by Design – No location tracking. No route maps. No ad network tracking. No background network tracking. Your run data is your business, not someone else’s product.
Whether you are a beginner looking for a smarter alternative to bloated running apps, a walker ready to add powerful bursts, or a runner wanting more intensity without longer mileage, KesselRUN is your simple, private interval coach.
Perfect For:
• Run/walk HIIT sessions & sprint workouts
• Weight-loss-focused cardio training
• Beginner-friendly custom running plans
• Time-efficient, high-intensity cardio days
You control the workout. You control the cues. You control your data.
Train faster. Burn brighter. Run the KesselRUN.
Disclaimer: Always train within your ability, warm up properly, and consult a qualified health professional before starting a new high-intensity exercise program if you have health concerns.
KesselRUN is part of the KesselFIT.com family.
Ratings & Reviews
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Updated security settings
The developer, ThreeLees 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 .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ThreeLees LLC
- Size
- 34.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © KesselFIT