Comparison

Kronos Studio vs Workout 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
Read full description

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

Workout Timer

Create and save custom interval timers for various workout routines like Tabata and HIIT. Features audio cues, haptics, and voice announcements for phase changes. Keeps running with the screen locked and offers Live Activities on iOS.

Highlights
  • Build custom interval timers
  • Save and reuse timer templates
  • Audio cues and haptic feedback
  • Voice announcements for phase changes
  • Live Activities on iOS Lock Screen
  • Runs with screen locked
Features
Read full description

A workout interval timer for Tabata, HIIT, and any work-and-rest routine. Build a timer once, save it, and run it again with one tap. It's free to use. No paywall. No ads. No tracking. No accounts. What it does: - Build interval timers with warm-up, work, rest, recovery, and cool-down phases - Save timers as templates and run them again in one tap - Audio cues, haptics, and optional voice announcements at every phase change - Watch the phase, set, and time left on a clear countdown screen - On iOS, a Live Activity shows your timer on the Lock Screen and Dynamic Island - Keeps running with the screen locked, so the phone can sit in your pocket Made for any interval discipline: - Rock climbing: hangboard and fingerboard repeaters (try 7 seconds on, 3 seconds off, for 6 sets), plus campus-board and no-hang protocols - Boxing, MMA, and martial arts: timed rounds with rest between them - High-intensity interval training and functional fitness: Tabata, EMOM, and AMRAP - Running and cycling: sprint and interval training - Strength and calisthenics: timed sets and supersets - Yoga, mobility, and stretching: hold each pose for a set time - Physical therapy and rehab: timed holds and repetitions - Meditation and breathwork: steady, repeating intervals If it has a "work for a bit, rest for a bit, repeat" shape, you can build it here. Your data stays with you. No accounts, no ads, no tracking. Your timers stay on your phone. The only network activity is the check for app updates, which carries no information about you. Open source: https://github.com/Josh-Approved/workout-timer What it doesn't do: No paywall. No ads. No tracking. No accounts. No subscriptions. The whole app is the whole app: every feature is here, free. Josh Approved is supported by the people who use it. No ads, no subscriptions, no data harvest. What keeps this sustainable is whether it's worth a few dollars to you. If it is, there's an optional tip jar in the app. Send feedback: feedback@joshapproved.com

Screenshots

Kronos Studio4 screens
Workout Timer4 screens

Verdict

The call

The clearest difference is update cadence: Kronos Studio at every 2 days against Workout Timer's weekly. On price, ads, in-app purchases and device support 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 and Workout Timer sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kronos Studio ships an update every 2 days, Workout Timer weekly. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

Scorecard1 real difference · 8 level
Kronos Studio versus Workout Timer: the parameters behind the verdict, then further details
ParameterKronos StudioWorkout Timer
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterWeekly
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.416.4
Further details — not scored
Size97 MB40 MB
Age rating12+4+
DeveloperMuller Labs LLCJosh Approved LLC

In-app purchases

2 purchases

Kronos Studio

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

Workout Timer

One-time5
  • Tip$2.99
  • Tip$4.99
  • Tip$9.99
Show 2 more
  • Tip$19.99
  • Tip$49.99

Questions

Is Kronos Studio free?
Kronos Studio is free to download, with in-app purchases available.
Is Workout Timer free?
Workout Timer is free to download, with in-app purchases available.
Do Kronos Studio or Workout Timer have ads?
Neither Kronos Studio nor Workout Timer shows ads.
Which is updated more often, Kronos Studio or Workout Timer?
Kronos Studio ships an update every 2 days, and Workout Timer weekly. Most recently, Kronos Studio was updated on October 1, 2026 and Workout Timer on September 19, 2026.

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