Comparison

Coach Catalyst vs Leptin

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

Head to head
About

Coach Catalyst

This app helps clients of certified coaches track healthy habits through push notifications and yes/no prompts. It integrates with Apple Health to automatically import activity and step data.

Highlights
  • Habit compliance prompts
  • Push notifications
  • Yes/No question responses
  • HealthKit integration
  • Activity and step data import
Features
Read full description

The Coach Catalyst app is designed for clients of trainers who have enrolled in the Coach Catalyst program. The app will send push notifications and prompt clients to answer yes/no question in regards to comply with healthy habits sent by your coach. WHO CAN USE THE APP Clients can only use the app if they are working with a Coach Catalyst coach. If you are a Coach Catalyst client, please contact your coach to receive your invite and login credentials to be able to use this app. The Coach Catalyst app allows access to HealthKit, allowing clients to automatically pull in their activity and steps data from Apple Health to their app.

About

Leptin

Features
Read full description

Leptin brings when you eat, what you eat and how you move into one plan for the day, and adjusts it when life gets in the way. It is not a calorie counter. There are no targets to miss and no warnings attached to a meal, because the point is the pattern over weeks, not a number at dinner. And it is not only for people managing a diagnosis. This is simply how eating and movement work, for everyone. Together these shape your metabolic health, which is the thing underneath weight, energy and how you feel through the day. FAST - a timer built around metabolic phases rather than a plain countdown, with a Live Activity so your progress stays on the lock screen. EAT - break-fast and meal guidance, meal logging with photos, and a nutrition database, so progress isn't undone in the first bite. MOVE - guided workouts with an audible coach that calls out each phase and keeps going while your phone is locked, interval walking sessions, freestyle logging, and movement suggestions tuned to how long you have been fasting. COACH - an AI coach that adapts to your fasting state, goals, and history. INSIGHTS - streaks, history, and progress over time, plus Apple Health sync so your workouts and activity stay in step with the rest of your health data. Leptin works offline: sessions and logs are captured on the device and sync when you are back online. Leptin is a wellness and lifestyle app. It is not a medical device and does not diagnose, treat, cure, or prevent any disease, and it does not provide medical advice. The in-app AI coach is an assistant, not a clinician, and its guidance should never be relied on for medical decisions. Consult a qualified healthcare professional before starting any fasting, nutrition, or exercise program, especially if you are pregnant or breastfeeding, under 18, or living with a medical condition such as diabetes, heart disease, low blood pressure, or a history of disordered eating. Stop and seek medical attention if you feel faint, disoriented, unusually short of breath, experience chest pain, or feel unwell in any way. Core fasting tracking, timers, and insights are free. SUBSCRIPTIONS Leptin offers optional auto-renewable subscriptions (subscription group "Leptin Plans") that unlock the AI coach with a monthly credit allowance plus expanded access to guided programs: - Basic: $9.99/month or $99.99/year - Premium: $19.99/month or $199.99/year - Unlimited: $49.99/month or $499.99/year Payment is charged to your Apple ID at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or turn off auto-renew in your App Store account settings after purchase. Terms of Use (EULA): https://leptin.app/terms Privacy Policy: https://leptin.app/privacy

Screenshots

Coach Catalyst4 screens
Leptin4 screens

Verdict

The call

The clearest difference is in-app purchases: Coach Catalyst at none against Leptin's 10. Leptin's advantage is update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement 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. Leptin sells 10 in-app purchases, starting at $9.99 per month. Coach Catalyst asks for nothing beyond the download.

UpkeepUpdate frequency

Coach Catalyst ships an update monthly, Leptin every 4 days. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.

Scorecard2 real differences · 8 level
Coach Catalyst versus Leptin: the parameters behind the verdict, then further details
ParameterCoach CatalystLeptin
PriceFreeFree
Rating4.1 (20 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings20 — better—
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size42 MB56 MB
Age rating4+4+
DeveloperCatalyst Tech LLCGRAYLIN AI (PTY) LTD

In-app purchases

None

Coach Catalyst

No in-app purchases

10 purchases

Leptin

Subscriptions6
  • Basic Monthly$9.991 Month
  • Premium Monthly$19.991 Month
  • Unlimited Monthly$49.991 Month
Show 3 more
  • Basic Yearly$99.991 Year
  • Premium Yearly$199.991 Year
  • Unlimited Yearly$499.991 Year
One-time4
  • $10 AI Credits$12.99
  • $25 AI Credits$32.99
  • $50 AI Credits$64.99
Show 1 more
  • $100 AI Credits$129.99

Questions

Is Coach Catalyst free?
Coach Catalyst is free to download, with no in-app purchases.
Is Leptin free?
Leptin is free to download, with in-app purchases available.
Do Coach Catalyst or Leptin have ads?
Neither Coach Catalyst nor Leptin shows ads.
Which is updated more often, Coach Catalyst or Leptin?
Coach Catalyst ships an update monthly, and Leptin every 4 days. Most recently, Coach Catalyst was updated on September 28, 2026 and Leptin on September 25, 2026.

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