Comparison

Kronos vs Skill

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

Head to head
About

Kronos

Features
Read full description

Most training apps hand you a workout. Kronos asks what you want to be able to do, then works out where you are and builds every session from there. EVERY SKILL IS A LADDER A pull-up isn't one exercise, it's a route: dead hang, scapular pull, negative, pull-up. Kronos holds 30 of these ladders across 245 steps โ€” pulling, pushing, core and legs, from a wall plank to a planche. You're always standing on one rung, and the app knows which. YOU MOVE UP BY PASSING A TEST Not by finishing a programme, and not because six weeks went by. Every rung has a published standard โ€” a number of reps, or seconds of a hold. Hit it cleanly and consistently and Kronos offers you a test: one all-out set that decides whether you move. Pass it and you advance. Miss it and you stay and keep building. The standard never moves, so progress is something you can point at. A SESSION TRAINS MORE THAN THE SKILL You can't hold a shape you have no strength for, or reach a position your shoulders won't go into. So each session pairs your skill work with strength and volume for the muscles it needs, and mobility for the ranges it demands โ€” shoulder extension before a german hang, dorsiflexion before a deep squat. Skills you've already earned come back now and then so you keep them. IT KNOWS WHERE SKILLS COME FROM Chasing a front lever when you can't hold a tuck one? Kronos routes you through the progression that leads there and tells you why, instead of prescribing something you can't do. BUILT FOR HOW TRAINING ACTUALLY GOES โ€ข A starting assessment places you honestly โ€” or skip it and climb from step one โ€ข Rate each set on form and difficulty; the app steers by your answers, not a calendar โ€ข Choose your days and equipment. No pull-up bar? Kronos won't prescribe one โ€ข 52 mobility drills, matched to the skill you're training that day โ€ข Demonstration video for two thirds of the catalogue, a search for the rest โ€ข Apple Watch app that runs a full session on its own โ€ข Apple Health: reads your weight, writes your sessions as workouts NO ACCOUNT, NO SUBSCRIPTION, NO ADS Kronos doesn't have a login because it doesn't have a server. Your training lives on your device and syncs across your own devices through your private iCloud. Nothing is sold, shared or sent anywhere. It works on a plane. WHO IT'S FOR People who want a specific thing โ€” a first pull-up, a handstand, a front lever โ€” and want to know exactly what stands between them and it. If you're looking for a library of workouts to pick from, this isn't that. The progressions are built on the Bodyweight Fitness community's progression chart, used with thanks.

About

Skill

Features
Read full description

Your roadmap from beginner to advanced calisthenics. Ever wanted to learn a muscle-up, planche, or human flag but had no idea where to start? Skill Flow maps out every step of the journey on a visual, interactive skill tree โ€” so you always know what to train next. How it works: Tap any skill to see what it is, what prerequisites you need, and where it leads. Pinch and pan across the full skill graph to explore progressions across pushups, pullups, dips, handstands, core, and back movements โ€” from dead hangs all the way to the iron cross and maltese. Track your progress: Mark skills as achieved, set target skills you're working toward, and log personal bests โ€” reps for dynamic moves, hold times for statics. Your profile keeps a clear snapshot of where you are and what's next. Train smarter: Not strong enough for a skill yet? Skill Flow tells you when negative training can help โ€” work the eccentric portion of a movement to build the strength you need for the full version. Features: -Interactive skill tree with 50+ calisthenics skills -Tap any skill for descriptions, prerequisites, and progressions -Track personal bests (reps and hold times) -Target skills and see the path to get there -Search to jump to any skill instantly -Gear requirements for each skill (bar, rings, parallel bars, etc.) -Covers 6 major categories: pushups, pullups, dips, handstands, core, and back -Free to browse the entire skill tree โ€” no account required Whether you're just starting with body weight fitness or chasing elite skills, Skill Flow gives you the map. You bring the work.

Screenshots

Kronos4 screens
Skill3 screens

Verdict

The call

The clearest difference is iOS requirement: Skill at 15.1 against Kronos's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 5 level
Kronos versus Skill: the parameters behind the verdict, then further details
ParameterKronosSkill
PriceFreeFree
Update frequencyโ€”Daily
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Apple Watch โ€” betteriPhone, iPod
Requires iOS26.015.1 โ€” better
Further details โ€” not scored
Size13 MB49 MB
Age rating4+4+
DeveloperManuel RinaldiJonathan Mesa

In-app purchases

None

Kronos

No in-app purchases

None

Skill

No in-app purchases

Questions

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

Other comparisons