Comparison

Rounds vs KesselRUN Running

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Rounds

This interval timer app simplifies workout creation for various training styles like HIIT, Tabata, and circuits. Build custom routines by stacking work, rest, and prep blocks, grouping them into rounds, and saving them as presets for quick access. It's designed for gym use, ensuring it won't interrupt your music.

Highlights
  • Customizable workout builder
  • Stackable work, rest, and prep blocks
  • Round grouping and repetition
  • Save and launch preset workouts
  • Music interruption-free design
  • Customizable sound profiles
Features
Read full description

Rounds is an interval timer that does what you tell it to. Wether its HIIT, Tabata, boxing 3s and 1s, a 20 minute EMOM with a finisheror kettlebell circuits, a mobility flow Rounds make it easy. No ads. No accounts. No upsells mid workout. Build the workout you want • Stack work, rest, and prep blocks in any order • Group blocks into rounds and repeat them as many times as you need • Save any workout as a preset and launch it with one tap from the home screen • Start from a handful of starter timers if you don't feel like building from scratch Rounds is made to actually be used in a gym. It doesn't interrupt your music, and we allow for a highly customizable sound profile so you can stay in the zone.

About

KesselRUN Running

Read full description

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.

Screenshots

Rounds3 screens
KesselRUN Running4 screens

Verdict

The call

The clearest difference is iOS requirement: KesselRUN Running at 15.1 against Rounds's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Rounds ships an update every 2 weeks, KesselRUN Running every 9 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 8 level
Rounds versus KesselRUN Running: the parameters behind the verdict, then further details
ParameterRoundsKesselRUN Running
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size49 MB33 MB
Age rating4+4+
DeveloperNightjar Labs LLC.ThreeLees LLC

In-app purchases

None

Rounds

No in-app purchases

None

KesselRUN Running

No in-app purchases

Questions

Is Rounds free?
Rounds is free to download, with no in-app purchases.
Is KesselRUN Running free?
KesselRUN Running is free to download, with no in-app purchases.
Do Rounds or KesselRUN Running have ads?
Neither Rounds nor KesselRUN Running shows ads.
Which is updated more often, Rounds or KesselRUN Running?
Rounds ships an update every 2 weeks, and KesselRUN Running every 9 days. Most recently, Rounds was updated on October 17, 2026 and KesselRUN Running on October 6, 2026.

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