Comparison

Kronos Studio vs HIIT Timer

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

Head to head
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.

About

HIIT Timer

Features
Read full description

Build the interval you actually train with, then hit start. Warm-up, work, rest, rounds and a long rest every few rounds — a HIIT timer that gets out of the way. HOW IT WORKS Set the warm-up, one round of work and rest, how many rounds you want, and how often a long rest should come in. The app builds the whole session from that and shows you the total time before you start. WHILE YOU TRAIN • Numbers you can read from the floor, colour-coded by phase • A 3Ā·2Ā·1 countdown takes over the screen before every change • Beeps and haptics on every transition, so you never have to look down • The screen stays on for the whole session, so the clock is always there • Your music keeps playing • Pause, resume or skip a phase at any point AFTER THE SESSION • Every workout saved: duration, rounds and work time • Day streak, totals and history PRO — ONE PAYMENT • Unlimited routines (three are free, forever) • Home-screen widget: your last routine starts in one tap • No subscription. No renewals. You buy it once. ALSO • Works fully offline, with no account and no permissions to grant • Dark and light, following the system • Catalan, Spanish, English, French and German • No ads Made for HIIT and Tabata, circuit training, CrossFit-style rounds, EMOM, boxing rounds, running intervals, core work, stretching — anything with a work interval and a rest interval.

Screenshots

Kronos Studio4 screens
HIIT Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: HIIT Timer at none against Kronos Studio's 2. Kronos Studio's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Kronos Studio sells 2 in-app purchases, starting at $8.99 per month. HIIT Timer asks for nothing beyond the download.

Scorecard2 real differences Ā· 4 level
Kronos Studio versus HIIT Timer: the parameters behind the verdict, then further details
ParameterKronos StudioHIIT Timer
PriceFreeFree
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.416.4
Further details — not scored
Size97 MB65 MB
Age rating12+4+
DeveloperMuller Labs LLCBrothapps, SL

In-app purchases

2 purchases

Kronos Studio

Subscriptions2
  • Kronos Pro Monthly$8.991 Month
  • Kronos Pro Yearly$49.991 Year
None

HIIT Timer

No in-app purchases

Questions

Is Kronos Studio free?
Kronos Studio is free to download, with in-app purchases available.
Is HIIT Timer free?
HIIT Timer is free to download, with no in-app purchases.
Do Kronos Studio or HIIT Timer have ads?
Neither Kronos Studio nor HIIT Timer shows ads.

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