Comparison

Koar vs StepZero

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

Head to head
About

Koar

Features
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KOAR is a strength coach that adapts to your body, not just your preferences. It reads your recovery and fatigue, detects stalls before you do, adjusts volume and intensity to how you're actually recovering, and for women, tunes intensity to your cycle phase. This isn't a workout logger. It's a training system. Free to start. Works on iPhone alone, better with Apple Watch and AirPods. Full gym to just bodyweight, KOAR builds around what you have. HANDS-FREE COACHING Put your AirPods in, put your phone down, lift. A warm studio-quality coach (Kira or Wes) narrates every set: exercise intros, rest countdowns, brace cues before heavy lifts, form reminders, a halfway checkpoint. Works offline, no setup. INTELLIGENT PROGRESSION Every set feeds a progression engine built on exercise science. KOAR estimates your 1RM with an Epley-Brzycki ensemble, detects stalls before you notice, and auto-adjusts volume and intensity. It adds weight when you're ready and calls a deload when you need one, using severity-weighted analysis of your last 4 sessions instead of waiting for you to fail twice. ADAPTS TO YOUR BODY A 5-second wellness check-in (energy, sleep, mood) calibrates every workout. KOAR reads HRV and nutrition from Apple Health to adjust volume and recovery, and uses menstrual cycle data to tune intensity by phase. APPLE WATCH COMPANION Live heart rate with zone coloring, rest timers based on heart-rate recovery (not just the clock), and rep detection tuned per exercise. If your Watch drops mid-workout, your iPhone is the source of truth, no data lost. TEMPO COACHING KOAR prescribes lifting tempo (eccentric, pause, concentric, pause) and guides each phase with haptic pulses on your wrist. COACHING INSIGHTS A Coach tab surfaces patterns you'd miss on your own: masked fatigue, volume response profiles, and wellness-performance correlations unique to you. PERIODIZATION THAT RUNS ITSELF Mesocycles with automatic phase progression, volume landmark tracking per muscle group (MEV/MAV/MRV), and goal-aware deloads. Hypertrophy deloads cut volume with lighter weights; strength deloads cut volume but keep full working weight for CNS readiness. BUILT FOR EVERY LEVEL Beginners get guided weight discovery with live cues. Intermediate lifters get periodized mesocycles with automatic deloads. Advanced lifters get RPE/RIR autoregulation and sex-based programming. EARN YOUR PROGRESS XP tied to training quality, not just showing up. 20 rank tiers, 18 badges for real milestones like 12-week streaks and pressing your body weight, and streak flames that evolve from Bronze to Obsidian over a year. AI PROGRAM BUILDER Describe your ideal training in plain English and KOAR builds a complete periodized weekly plan that respects evidence-based volume landmarks. STRAVA SYNC Completed workouts post to your Strava feed automatically as Weight Training activities. WIDGETS & LIVE ACTIVITIES Today's workout, weekly volume by muscle group, and your streak flame on the Home and Lock Screen. Live Activities keep your current set on Dynamic Island. PRIVACY FIRST No account required. Fully functional offline. No ads. Anonymous usage analytics only, opt-out in Settings. Voice coaching runs entirely on your device. Your data stays on device unless you turn on iCloud sync. SUBSCRIPTION KOAR's core is free: workout logging, RPE/RIR autoregulation, the progression engine, periodization, wellness check-ins, Apple Watch, Strava, and widgets. KOAR Pro unlocks the coaching layer: voice coaching, the AI program builder, Coaching Insights, heart-rate-based rest, body tracking, advanced set techniques, and unlimited routines. New users get a 2-week free Pro trial. Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in App Store settings. Localized in 13 languages. Voice coaching in English only for now. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

StepZero

Features
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Break the old pattern. StepZero helps you quit adult content, alcohol, smoking, cannabis and doomscrolling, with a clear plan for every day and help for the moment the urge hits. • Clean counter: to the second for each module, with your record and milestones. • Blocker: on iOS 16 and later, block apps and Safari websites through Screen Time. • Coach Zero: an AI coach that knows your day and your streak. • Three missions a day, plus vocabulary: 10 words and terms per round with a short quiz. • When the urge hits: emergency voice, Relapse Protocol and hotlines. • Streak, XP, ranks, weekly league and a focus timer. Photos and videos stay on your device. STEPZERO PRO Yearly or monthly subscription; the App Store shows your price. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stepzero-459.pages.dev/privacy Terms: https://stepzero-459.pages.dev/terms StepZero is a self-discipline tool, not a medical service. In a crisis, the app shows hotlines for your country. 16+.

Screenshots

Koar4 screens
StepZero4 screens

Verdict

The call

The clearest difference is iOS requirement: StepZero at 15.1 against Koar's 18. On price, update cadence, ads and in-app purchases there is nothing between them.

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

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

Both are free to download. Koar sells 3 in-app purchases, starting at $9.99 per month and StepZero sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Koar ships an update every 5 days, StepZero every 3 days. Both last shipped on November 13, 2026.

Scorecard1 real difference Ā· 5 level
Koar versus StepZero: the parameters behind the verdict, then further details
ParameterKoarStepZero
PriceFreeFree
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS1815.1 — better
Further details — not scored
Size150 MB35 MB
Age rating4+17+
DeveloperAric MalkaEmil Gruber

In-app purchases

3 purchases

Koar

Subscriptions2
  • Monthly14 Days trial$9.991 Month
  • Yearly14 Days trial$69.991 Year
One-time1
  • Lifetime Access$179.00
2 purchases

StepZero

Subscriptions2
  • StepZero Pro – Monthly$8.991 Month
  • StepZero Pro – Yearly$49.991 Year

Questions

Is Koar free?
Koar is free to download, with in-app purchases available.
Is StepZero free?
StepZero is free to download, with in-app purchases available.
Do Koar or StepZero have ads?
Neither Koar nor StepZero shows ads.
Which is updated more often, Koar or StepZero?
Koar ships an update every 5 days, and StepZero every 3 days. Most recently, Koar was updated on November 13, 2026 and StepZero on November 13, 2026.

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