Comparison

One Step Challenges vs ScanLean AI

Price, ratings, monetisation and update history for both apps, side by side — 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 — 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 — 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 — 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 — Brian walks, Doug trains most days, Amanda never misses. Or race your Shadow — 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 — 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 — 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 — 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 ——— One Step Pro — optional auto-renewable subscription: - One Step Pro (Monthly) — $4.99 per month - One Step Pro (Annual) — $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

ScanLean AI

This app uses AI to analyze your body from a photo and calculate body fat percentage. It offers personalized meal and workout plans with a subscription to help you achieve your fitness goals. Track your progress over time by rescanning every four weeks.

Highlights
  • AI body fat percentage scan
  • Personalized meal plans
  • Custom workout plans
  • Calorie target calculation
  • Progress tracking
  • Body transformation goals
Features
Read full description

ScanLean AI uses advanced artificial intelligence to analyze your body and instantly calculate your body fat percentage. Simply take a photo and get your results in seconds. HOW IT WORKS: - Take a full body photo - AI instantly calculates your body fat % - Unlock your personalized meal and workout plan with a subscription - Rescan every 4 weeks to track progress FEATURES (requires subscription): - Instant body fat % scan - Personalized daily calorie target - Custom meal plan based on your goal - Weekly workout plan - Progress tracking over time - Lose fat, get lean, or build muscle Subscription options: - Monthly: $7.99/month - Annual: $49.99/year (Save 48%) Start your body transformation today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://growthvaultllc.com/scanlean-privacy.html

Screenshots

One Step Challenges4 screens
ScanLean AI4 screens

Verdict

The call

The clearest difference is update cadence: One Step Challenges at every 3 days against ScanLean AI's every 6 days. 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. One Step Challenges sells 2 in-app purchases, starting at $4.99 per month and ScanLean AI sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

One Step Challenges ships an update every 3 days, ScanLean AI every 6 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

Scorecard1 real difference · 9 level
One Step Challenges versus ScanLean AI: the parameters behind the verdict, then further details
ParameterOne Step ChallengesScanLean AI
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 days — betterEvery 6 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size30 MB59 MB
Age rating12+4+
DeveloperJUSTIN MORGAN MAYEURGrowthvault LLC

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
2 purchases

ScanLean AI

Subscriptions2
  • ScanLean Pro monthly$7.991 Month
  • ScanLean Pro Annual$49.991 Year

Questions

Is One Step Challenges free?
One Step Challenges is free to download, with in-app purchases available.
Is ScanLean AI free?
ScanLean AI is free to download, with in-app purchases available.
Do One Step Challenges or ScanLean AI have ads?
Neither One Step Challenges nor ScanLean AI shows ads.
Which is updated more often, One Step Challenges or ScanLean AI?
One Step Challenges ships an update every 3 days, and ScanLean AI every 6 days. Most recently, One Step Challenges was updated on October 10, 2026 and ScanLean AI on October 13, 2026.

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