Comparison

One Step Challenges vs kach

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

Head to head
About

One Step Challenges

Features
Read full description

One Step Challenges is a fitness competition app built for friends and family who want to compete fairly across different fitness levels. Like a handicap in golf, each user gets a personal multiplier based on their own fitness β€” so a beginner and a seasoned athlete can go head-to-head on equal terms. Points are weighted by individual capability, not raw output. Effort wins, not genetics. Your handicap isn't a guess. The moment you connect Apple Health, the app measures it from your last 30 days of real data β€” daily steps, active minutes, resting heart rate, and time in elevated heart-rate zones. Your first week confirms it, and it recalibrates every 30 days as your fitness changes. Start a 7-day challenge, send your crew the invite link, and everyone competes on their own handicap. When a challenge ends, the first person to hit "Run it back" starts the rematch β€” and everyone else joins that same one, so your crew stays together week after week. No one to compete with yet? Race a bot. Three opponents, each with a different training style, each with a week you can beat. Pick the one that sounds like you and go β€” Brian walks, Doug trains most days, Amanda never misses. Or race your Shadow β€” the you from your own last four weeks. Same routines, same pace, built from your real history. Beat your typical week and you win; win, and your Shadow gets stronger, so the bar rises every time you do. It's the one opponent always exactly your speed. Daily activity is tracked automatically through Apple Health: workouts with heart-rate zone analysis, steps, exercise minutes, and active calories. Log on-plan nutrition with a single tap β€” no calorie counting. Build daily streaks for consistency. Leaderboards show standings across everyone in a challenge, and you'll know when someone joins, cheers you on, or a challenge wraps up. Key features: - Handicap-fair scoring that levels the field across fitness levels - Handicap measured from your real Apple Health data the moment you connect, recalibrated every 30 days - Heart-rate zone analysis on every workout - Steps, active minutes, active calories, and resting HR tracking - One-tap nutrition logging β€” no calorie counting - Daily streaks for consistency - Multi-user challenges with shared invite links and codes - Crew rematches that keep everyone in the same challenge - Leaderboard and today feed - Reactions to cheer on the people you're competing with, with notifications when they land - End-of-challenge recaps so every finish gets its moment - Built for honest measurement, not gamification tricks Works with Apple Watch, Garmin, Whoop, Oura, Fitbit, or any device that writes to Apple Health β€” the more your device shares with Apple Health, the more the app can score. Steps and nutrition work without a wearable. For feedback or support: onestepapp.feedback@gmail.com β€”β€”β€” One Step Pro β€” optional auto-renewable subscription: - One Step Pro (Monthly) β€” $4.99 per month - One Step Pro (Annual) β€” $34.99 per year Each plan includes a 14-day free trial for new subscribers. Payment is charged to your Apple ID at confirmation of purchase. Your subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use (EULA): https://onestepcollective.com/terms.html Privacy Policy: https://onestepcollective.com/privacy.html

About

kach

Features
Read full description

kach is a no-nonsense gym tracker for people who count reps, not followers.n n BUILT FOR IPHONE DUOn β€’ Unfold it and the workout splits on the hinge: exercises on one side, sets on the othern β€’ Folded, tabs and back sit in the side stripn β€’ Turn any iPhone on its side for the same two-pane viewn n PLAN ANY ROUTINEn β€’ Start from a proven template or build your own splitn β€’ Name your days, set weight, reps and rest your wayn β€’ 870+ exercises, plus your own custom movementsn n LOG EVERY SET, FASTn β€’ Sets pre-filled from your plan β€” tap to confirmn β€’ Supersets, drop sets, warm-ups and AMRAP, all first-classn β€’ Swap an exercise if a machine's taken, or add one on the flyn β€’ Built-in plate calculator for any bar and the plates you ownn n WATCH YOUR STRENGTH CLIMBn β€’ Per-exercise history, estimated 1RM trends and personal recordsn β€’ Weekly volume, calories and live heart raten β€’ Body measurements with progress photos and videosn n ON YOUR WRISTn β€’ Apple Watch companion: current set, rest timer and heart raten β€’ Log a full workout without your phonen n YOURS, ON YOUR DEVICEn β€’ No sign-up and no cloud lock-in β€” your training stays on your phonen β€’ Syncs with Apple Health and Apple Watchn β€’ Works offlinen n kach is free to download and use β€” no subscription. A short ad plays before each workout starts.

Screenshots

One Step Challenges4 screens
kach4 screens

Verdict

The call

The clearest difference is ads: One Step Challenges at none against kach's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

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

Both are free to download. One Step Challenges sells 2 in-app purchases, starting at $4.99 per month and kach sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

One Step Challenges ships an update every 3 days, kach every 2 days. Both last shipped on October 31, 2026.

Scorecard1 real difference Β· 5 level
One Step Challenges versus kach: the parameters behind the verdict, then further details
ParameterOne Step Challengeskach
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days β€” better
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPod, Apple Watch β€” better
Requires iOS15.115.0 β€” better
Further details β€” not scored
Size30 MB100 MB
Age rating12+4+
DeveloperJUSTIN MORGAN MAYEURBoris Varshavskii

In-app purchases

2 purchases

One Step Challenges

Subscriptions2
  • One Step Pro Monthly7 Days trial$4.991 Month
  • One Step Pro Annual7 Days trial$34.991 Year
1 purchases

kach

One-time1
  • Remove ads$7.99

Questions

Is One Step Challenges free?
One Step Challenges is free to download, with in-app purchases available.
Is kach free?
kach is free to download, with in-app purchases available.
Do One Step Challenges or kach have ads?
kach shows ads; One Step Challenges does not.
Which is updated more often, One Step Challenges or kach?
One Step Challenges ships an update every 3 days, and kach every 2 days. Most recently, One Step Challenges was updated on October 31, 2026 and kach on October 31, 2026.

Other comparisons