Comparison

Kronos Studio vs Just'a Tabata

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

Just'a Tabata

Features
Read full description

An interval timer that gets out of the way. Build a workout in seconds — work, rest, rounds, sets — then start it and let clear beep cues call every change. The whole builder is free, and so is every workout you save. One person, one workout, two screens. Start, pause, skip and end together on iPhone and Apple Watch when both are open — or run them independently, for two people training at once. • Work / rest / rounds / sets, exactly as you want them • Beep cues and haptics on every change • Unlimited saved workouts, plus a Quick Start you shape yourself • Home Screen widgets • Progress history, kept on your device Recommended by TiNa Slim — youtube.com/@TiNa_Slim Pro — one payment, no subscription. Removes the ads and keeps the workout running while you're away from the app, with a live countdown on the Lock Screen and in the Dynamic Island. Adds voice countdown, exercise announcements, the full progress insights, and the Apple Watch app. No account. No cloud. Nothing you record leaves your phone.

Screenshots

Kronos Studio4 screens
Just'a Tabata4 screens

Verdict

The call

The clearest difference is ads: Kronos Studio at none against Just'a Tabata's shown. Kronos Studio also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (16.4 vs 26.0). On price, in-app purchases and device support 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 and Just'a Tabata sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kronos Studio ships an update every 2 days, Just'a Tabata every 5 days. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Kronos Studio versus Just'a Tabata: the parameters behind the verdict, then further details
ParameterKronos StudioJust'a Tabata
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 5 days
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS16.4 — better26.0
Further details — not scored
Size97 MB21 MB
Age rating12+4+
DeveloperMuller Labs LLCVinh Nguyen

In-app purchases

2 purchases

Kronos Studio

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

Just'a Tabata

Subscriptions2
  • Pro Monthly3 Days trial$0.991 Month
  • Pro Yearly7 Days trial$4.991 Year
One-time1
  • Pro Lifetime$9.99

Questions

Is Kronos Studio free?
Kronos Studio is free to download, with in-app purchases available.
Is Just'a Tabata free?
Just'a Tabata is free to download, with in-app purchases available.
Do Kronos Studio or Just'a Tabata have ads?
Just'a Tabata shows ads; Kronos Studio does not.
Which is updated more often, Kronos Studio or Just'a Tabata?
Kronos Studio ships an update every 2 days, and Just'a Tabata every 5 days. Most recently, Kronos Studio was updated on October 1, 2026 and Just'a Tabata on September 29, 2026.

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