Comparison

IntervalBeats vs Kronos Studio

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

Head to head
About

IntervalBeats

Features
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IntervalBeats is a focused interval timer for workouts, HIIT, tabata, stretching, meditation, and anything else that benefits from structured time. Built around Apple Music — pick your intervals, choose a work playlist and a rest playlist, press start. APPLE MUSIC — RECOMMENDED FOR THE FULL EXPERIENCE Apple Music is the smoothest path. Connect once and IntervalBeats plays, pauses, and switches between your work and rest playlists automatically — even while the screen is locked. The Sleep Timer pauses Apple Music precisely at zero whether your phone is locked or not. Requires an Apple Music subscription. WORKS WITH OTHER AUDIO APPS TOO Prefer Spotify, Apple Podcasts, Overcast, Audible, or YouTube Music? Start playing in your audio app, then launch an IntervalBeats session — your audio mixes with our beep cues. Workout auto-pause and the Sleep Timer also work with these apps; just keep IntervalBeats on screen (we dim it for you) so iOS allows us to send the pause. No Apple Music subscription needed. KEY FEATURES • Customizable intervals — Set work and rest durations in seconds and minutes, pick any number of cycles • Ready-to-use templates — 16 presets across Focus (Pomodoro, Study Sprint), Classroom (Brain Break, Station Rotation), and fitness (HIIT, Tabata, EMOM, yoga, and more) — start in one tap • Timer Sets — Chain multiple timers into one seamless workout with automatic or manual transitions • One-tap repeat — Restart a workout or a Set without leaving the summary screen • Built for iPad — Split-screen layout makes full use of your tablet • Visual cycle progress — Progress ring tracks your rotations in real time • Sleep Timer — Fall asleep to your music with an automatic pause at the time you choose EVERYTHING ELSE • Countdown before start — Optional countdown so you have time to get ready • Beep cues — Configurable interval beeps and end-of-phase sounds • Haptic feedback — Feel every phase change • Background timer — The timer itself keeps ticking when your screen is off or you switch apps • Large, readable display — See your time and phase clearly, even mid-workout • Saved presets — Build once, reuse forever PERFECT FOR • HIIT and Tabata workouts • Circuit training and CrossFit • Running intervals and sprint training • Stretching and yoga flows • Focus sessions and Pomodoro • Meditation and breathwork • Classroom activities, brain breaks, and transitions • Any timed activity with work and rest phases DESIGNED FOR FOCUS IntervalBeats stays out of your way. No ads, no accounts, no tracking. Just a timer that respects your music and your time. PRIVACY IntervalBeats does not collect personal data. Apple Music permission is used only to play the playlists you choose. See the full privacy policy for details. Questions or feedback? Contact intervalbeats@icloud.com

About

Kronos Studio

Features
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Real strength workouts, written for the gear you've got and the 30 minutes you have. Open Kronos and today's session is ready: exercises, sets and the weights filled in, built for the equipment in front of you and the minutes you named. Different every time, shaped to your gear, your time, and how you actually feel today. You don't need more motivation. You need fewer decisions. IT ALREADY KNOWS • It already knows what's at your gym. • It already knows you only have 20 minutes. • It already knows you skipped Tuesday. • It already knows you hated lunges last time. • It already knows you've done legs twice this week. So you don't have to. HOW ONE TAP WORKS BUILT AROUND YOUR ACTUAL GEAR. A pair of dumbbells, a full gym, or nothing at all: tell Kronos what you have and it never writes a workout that needs a cable machine someone else is on. It fills in the weight, too, instead of leaving you a blank. HOTEL ROOM? HOTEL WORKOUT. Save your spots: gym, home, hotel, the park. Switch in one tap and the workout reshapes itself. Flag an injury once and it plans around that too. SWIPE EXERCISES, NOT EX'S. Love it, like it, meh, never again. Every swipe trains the next workout. PROGRAMS THAT BEND. Seventeen programs, 2 to 8 weeks each, written for your gear and shaped to your week instead of the other way round. The first session of every one is free. Any day you'd rather not be on one, build a single session instead. TRAIN WITH YOUR CREW Start a challenge, drop the code in the group chat, and every finished day puts your name on the Wall beside theirs. Pick a shape: a daily target, a ladder, a weekly max test, or just show up. Wildcards cover a missed day, streaks carry, and nobody gets a notification about your rest day. It's the part that makes people keep going, and it isn't a leaderboard for strangers. It's five people you already know. A BIG CALM TIMER We tell you what's next; you just lift. No tapping mid-set. Then swipe: right to keep, left for never again. Benchmarks are in there too. Cindy, Murph, and 42 more, each one scaled to the kit you actually own instead of the kit the workout assumed. LOGGING, WHEN YOU WANT IT Log a set if you want the number. Skip it if you don't. Your week, your lifts, and your history are there when you go looking, and never the price of getting a workout. PLUS A FREE INTERVAL TIMER. ACTUALLY FREE. HIIT, Tabata, EMOM, AMRAP, plus full custom intervals. Save unlimited presets. The screen stays awake, the cues mix over your music, and there are no ads. No account needed, no "Pro timer" upsell. Not now, not ever. WHAT WE BELIEVE Variety beats optimization. Constraints are features. Decisions are willpower taxes. Today's mood matters. Adherence beats intensity. Fun is a strategy. A B+ workout four days a week beats an A+ workout once. Every time. KRONOS PRO Free is the interval timer, forever, plus five workouts written for your gear and the first session of every program. Pro is the rest: a new workout every day you open the app, every session of all 17 programs, your whole history scored, up to 10 challenges at once, and crew insights. Prices are shown in the app and may vary by region. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms: https://getkronos.app/terms Privacy: https://getkronos.app/privacy Most fitness apps make you a workout plan. Kronos makes you a person who works out. The best workout is the one you'll actually do.

Screenshots

IntervalBeats4 screens
Kronos Studio4 screens

Verdict

The call

The clearest difference is in-app purchases: IntervalBeats at none against Kronos Studio's 2. Kronos Studio's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Kronos Studio sells 2 in-app purchases, starting at $8.99 per month. IntervalBeats asks for nothing beyond the download.

UpkeepUpdate frequency

IntervalBeats ships an update every 2 weeks, Kronos Studio every 3 days. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 4 level
IntervalBeats versus Kronos Studio: the parameters behind the verdict, then further details
ParameterIntervalBeatsKronos Studio
PriceFreeFree
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.1 — better16.4
Further details — not scored
Size30 MB101 MB
Age rating4+12+
DeveloperIouri ZinovievMuller Labs LLC

In-app purchases

None

IntervalBeats

No in-app purchases

2 purchases

Kronos Studio

Subscriptions2
  • Kronos Pro Monthly$8.991 Month
  • Kronos Pro Yearly$49.991 Year

Questions

Is IntervalBeats free?
IntervalBeats is free to download, with no in-app purchases.
Is Kronos Studio free?
Kronos Studio is free to download, with in-app purchases available.
Do IntervalBeats or Kronos Studio have ads?
Neither IntervalBeats nor Kronos Studio shows ads.
Which is updated more often, IntervalBeats or Kronos Studio?
IntervalBeats ships an update every 2 weeks, and Kronos Studio every 3 days. Most recently, IntervalBeats was updated on October 7, 2026 and Kronos Studio on October 17, 2026.

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