Pricing
Start free. Upgrade if you want.
No card, and the timer needs no account either. A free account unlocks your first week of training, a workout a month, challenges and sync. Pro is one subscription, annual or monthly, and both unlock the same thing.
Free
Free
$0 forever
The timer, logging, the Library, offline training and challenges
A free first week, The Opener: three workouts across seven days, then one workout a month. The timer stays unlimited and needs no account.
Download Kronos free 
Kronos Pro
Both plans are bought inside the app, on the account you train with. Nothing to set up here.
Prices shown for your country where we can tell. The App Store or Google Play has the final word at checkout.
Pro is the caps coming off: unlimited generated workouts, unlimited Library and self-built runs, and every session of all 16 programs. The timer was never capped.
The timer needs no account. Generated workouts, programs, challenges and sync need a free one.
| What you get | Free | Pro |
|---|---|---|
| Free, forever | ||
Interval timerHIIT, Tabata, EMOM, AMRAP and fully custom intervals. No ads, no account, nothing metered. | Every mode, no ads | Every mode, no ads |
Workout formatsStraight sets, supersets, circuits, ladders, chippers, zone 2 and more, each with a timer that runs it properly. | All 12 | All 12 |
PacingAuto moves on for you, self-paced waits for your tap, open counts up with no deadline. Switch mid-session at any block. | Auto, self-paced, open | Auto, self-paced, open |
Saved timer presetsBuild a timer once, name it, and it’s one tap next time. They live on your phone, no account needed. | Unlimited, no account | Unlimited, no account |
Logging setsOne tap per set, pre-filled from last time. Or switch logging off and never see a number. | Reps, weight, holds, carries | Reps, weight, holds, carries |
Saving a workoutKeep a session you loved, or build one from scratch: any format, any blocks. Edit it whenever, and it runs offline. | Keep it, tweak it forever | Keep it, tweak it forever |
The LibraryCindy, Murph, Fran, Tabata, the mile and 39 more, each with its source cited, published scalings and a best score that follows you. | Browse, search, star all 44 | Browse, search, star all 44 |
Apple Health, Health ConnectFinished workouts land in your health record with an estimated energy burn that counts toward your rings. Weigh-ins come back to sharpen your loads. | Workouts out, body weight in | Workouts out, body weight in |
Apple WatchThe clock and the next movement, haptics at three-two-one, go, rest and finish, one-tap set logging during the rest, and heart rate with ring credit. It ships inside the iPhone app. | The whole session on your wrist | The whole session on your wrist |
Training offlineStart, run, log and finish the whole session with no signal. It syncs when you resurface. | Whole workout, fully logged | Whole workout, fully logged |
StravaEvery session exports with each set, its reps and its duration, not just a title and a time. | Every set, with the detail | Every set, with the detail |
Your training weekPick how many days you train and the splits you like. Kronos plans the week around them. | 1 to 7 days, your splits | 1 to 7 days, your splits |
Joining a challengeA friend sends a code, you’re in. Do the day’s work and your cell on the board fills in. | Free to join, free to do | Free to join, free to do |
Body weightA quiet chart beside your training history. One entry a day, and logging again today just corrects it. | One tap a day, kg or lb | One tap a day, kg or lb |
Your dataOne tap in your profile exports every workout and every set you have ever logged. Free on purpose: your history is never hostage. | Everything, as CSV | Everything, as CSV |
Teach it your tasteRate any exercise love it, fine, or never again. Every rating shapes the next workout it builds for you. | Star it, skip it, never again | Star it, skip it, never again |
| Where Pro lifts a cap | ||
Workouts built for youThe core of Pro: a session written from your equipment, your minutes and your recent training, every time you ask. Free gets three of them in your first week and one a month after it. | Your first week, then one a month | Unlimited |
Running the Library or your own buildsA Library workout or one you built yourself spends the month’s free workout. Tweaking it, swapping a move or running it again spends nothing more. | Your workout of the month | Unlimited |
ProgramsYour first week is The Opener, a seven-day program on the house: three full-body sessions written for your gear. On the sixteen on the shelf, the first session is free and the rest is Pro. | Your first week, plus day 1 of any | Every session of all 16 |
Challenges at onceFree runs one challenge at a time. Pro keeps up to 10 boards going, so the rematch never has to wait. | 1, and the rematch waits | Up to 10 |
Challenges inside a workoutFold a challenge day into a workout Kronos builds for you, so one session covers your own training and the crew’s work. | Spends your workout of the month | Unlimited, up to 3 at once |
Training logFree keeps this week and last. Pro keeps every week you’ve ever trained, scored so you can see the trend. | This week and last | Every week, all of it, scored |
RecordsLift PRs and workout bests in one place. Free shows your three biggest; nothing you earned is ever taken away, Pro just shows the whole wall. | Your 3 biggest | All of them |
Saved locationsSave the equipment at each place you train and switch in one tap. The workout reshapes itself around what’s there. | One set of equipment | Home, gym, and any custom kit |
Crew insightsThe stats page for your challenge crew: who is on a streak, how much everyone trained, and who quietly did the most. | A teaser | Streaks, time trained, standouts |
| Pro only | ||
Swap inside a challengeReplace any exercise in a challenge day with one that suits your equipment or level, and the day still counts. | No | Any exercise, any day |
Free, forever
Interval timer
HIIT, Tabata, EMOM, AMRAP and fully custom intervals. No ads, no account, nothing metered.
- Free · Pro
- Every mode, no ads
Workout formats
Straight sets, supersets, circuits, ladders, chippers, zone 2 and more, each with a timer that runs it properly.
- Free · Pro
- All 12
Pacing
Auto moves on for you, self-paced waits for your tap, open counts up with no deadline. Switch mid-session at any block.
- Free · Pro
- Auto, self-paced, open
Saved timer presets
Build a timer once, name it, and it’s one tap next time. They live on your phone, no account needed.
- Free · Pro
- Unlimited, no account
Logging sets
One tap per set, pre-filled from last time. Or switch logging off and never see a number.
- Free · Pro
- Reps, weight, holds, carries
Saving a workout
Keep a session you loved, or build one from scratch: any format, any blocks. Edit it whenever, and it runs offline.
- Free · Pro
- Keep it, tweak it forever
The Library
Cindy, Murph, Fran, Tabata, the mile and 39 more, each with its source cited, published scalings and a best score that follows you.
- Free · Pro
- Browse, search, star all 44
Apple Health, Health Connect
Finished workouts land in your health record with an estimated energy burn that counts toward your rings. Weigh-ins come back to sharpen your loads.
- Free · Pro
- Workouts out, body weight in
Apple Watch
The clock and the next movement, haptics at three-two-one, go, rest and finish, one-tap set logging during the rest, and heart rate with ring credit. It ships inside the iPhone app.
- Free · Pro
- The whole session on your wrist
Training offline
Start, run, log and finish the whole session with no signal. It syncs when you resurface.
- Free · Pro
- Whole workout, fully logged
Strava
Every session exports with each set, its reps and its duration, not just a title and a time.
- Free · Pro
- Every set, with the detail
Your training week
Pick how many days you train and the splits you like. Kronos plans the week around them.
- Free · Pro
- 1 to 7 days, your splits
Joining a challenge
A friend sends a code, you’re in. Do the day’s work and your cell on the board fills in.
- Free · Pro
- Free to join, free to do
Body weight
A quiet chart beside your training history. One entry a day, and logging again today just corrects it.
- Free · Pro
- One tap a day, kg or lb
Your data
One tap in your profile exports every workout and every set you have ever logged. Free on purpose: your history is never hostage.
- Free · Pro
- Everything, as CSV
Teach it your taste
Rate any exercise love it, fine, or never again. Every rating shapes the next workout it builds for you.
- Free · Pro
- Star it, skip it, never again
Where Pro lifts a cap
Workouts built for you
The core of Pro: a session written from your equipment, your minutes and your recent training, every time you ask. Free gets three of them in your first week and one a month after it.
- Free
- Your first week, then one a month
- Pro
- Unlimited
Running the Library or your own builds
A Library workout or one you built yourself spends the month’s free workout. Tweaking it, swapping a move or running it again spends nothing more.
- Free
- Your workout of the month
- Pro
- Unlimited
Programs
Your first week is The Opener, a seven-day program on the house: three full-body sessions written for your gear. On the sixteen on the shelf, the first session is free and the rest is Pro.
- Free
- Your first week, plus day 1 of any
- Pro
- Every session of all 16
Challenges at once
Free runs one challenge at a time. Pro keeps up to 10 boards going, so the rematch never has to wait.
- Free
- 1, and the rematch waits
- Pro
- Up to 10
Challenges inside a workout
Fold a challenge day into a workout Kronos builds for you, so one session covers your own training and the crew’s work.
- Free
- Spends your workout of the month
- Pro
- Unlimited, up to 3 at once
Training log
Free keeps this week and last. Pro keeps every week you’ve ever trained, scored so you can see the trend.
- Free
- This week and last
- Pro
- Every week, all of it, scored
Records
Lift PRs and workout bests in one place. Free shows your three biggest; nothing you earned is ever taken away, Pro just shows the whole wall.
- Free
- Your 3 biggest
- Pro
- All of them
Saved locations
Save the equipment at each place you train and switch in one tap. The workout reshapes itself around what’s there.
- Free
- One set of equipment
- Pro
- Home, gym, and any custom kit
Crew insights
The stats page for your challenge crew: who is on a streak, how much everyone trained, and who quietly did the most.
- Free
- A teaser
- Pro
- Streaks, time trained, standouts
Pro only
Swap inside a challenge
Replace any exercise in a challenge day with one that suits your equipment or level, and the day still counts.
- Free
- No
- Pro
- Any exercise, any day
Nothing you already use disappears when the month’s workout is spent.
A month of workouts for the price of one meal.
Kronos Pro costs less than the smoothie you’ll drink after it.
What you’re paying for
A training engine, not a stopwatch.
Here’s what the subscription actually buys, with the numbers attached.
Generate
Built for the day you’re having.
Tell it the place, the time and the focus. It reads your history and writes a real workout: warm-up, working blocks, rest that fits the minutes you actually have.
- 580 exercises across 66 kinds of equipment
- The weight is prescribed too, from the plates you own
- About 25 dials, from intensity to warm-up style
Programs
An arc, not a PDF.
Sixteen programs from two to eight weeks. Base weeks, build weeks, a deload where it’s earned, and the same test on day one and in the last week, so you finish with a number.
- Your first week free end to end, plus day 1 of any program
- Any order, any day: three by Sunday is the deal
- Run one with a crew and everyone gets their own sessions
Train
A timer that knows the assignment.
One generic countdown doesn’t fit twelve formats. An AMRAP gets a block clock and a tap per round, an EMOM tells you which minute you’re in, a chipper counts up while you tick work off.
- 12 formats, from straight sets to Tabata to carries
- 3 pacing modes, switchable at every block
- Cues blend into your music instead of stopping it
Track
Your last set, already filled in.
Weight and reps arrive pre-filled from last time, so one tap logs the set while the rest clock keeps running. Or switch logging off and never see a number.
- Knows a plank is seconds and a carry is distance
- Records, an estimated 1RM trend, and an all-time view
- Apple Health and Health Connect, workouts out and weight in
Together
Drag the group chat into it.
A challenge is a workout pact: same plan, same days, one board. Kronos hands out the work and keeps the score, so nobody has to be the group admin.
- Shared workouts, or a daily number that climbs each week
- Crews up to 500, with grace days and catch-up weeks
- Cheers, well-aimed pokes, and a wall of earned days
Offline
Hotel basement gym? Airplane mode? The workout doesn’t care.
Start it, run it, log every set, rate it and finish it with no connection at all. It syncs when you’re back and credits the day you actually trained, so your streak stays honest. Only building a brand new workout needs signal.
Fair questions.
What do I get without paying anything?
The interval timer in every mode, all twelve workout formats, full set logging, saving and building your own workouts, the whole Library to browse, training offline, Strava and Apple Health sync, and any challenge you get invited to. Plus a free first week, three workouts across seven days, one workout a month after it, and day 1 of any program.
What happens after my free first week?
Nothing you were already using stops. The timer, your saved workouts and presets, logging and your challenges all keep working exactly as before. A new workout lands every month, and tweaking it costs nothing. A workout whenever you want one, and every session of every program, is what Pro adds.
Is joining a challenge free?
Yes, and it always will be. Somebody sends you a code, you join, you do the work, you show up on the board. The free plan runs one challenge at a time, so a rematch waits its turn. Pro runs up to 10 at once.
Is there a free trial?
The free plan is the trial: your first week and one workout a month never expire. Pro bills from the day you subscribe.
Can I cancel?
Any time, from your Apple or Google account settings, in about four taps. Pro keeps working until the end of the period you already paid for, and then the free plan picks up where it left off.
What if I want a refund?
Refunds are handled by Apple and Google, not by us, because they take the payment. Ask through the App Store or Google Play and they will sort it out.
Why is the price different in my country?
Apple and Google set the local price for each storefront, so the number you see at checkout is the real one. We show your country’s price when we can work out where you are, and the store always has the final word.
iOS & Android
The timer is free. Forever.
It never expires and the challenges never cost anything. Neither does your first week, or the workout that lands every month. Pro is there when you want the app to do the thinking.
