Comparison

Grey Matter Training vs Coach Jon

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

Head to head
About

Grey Matter Training

This app offers personalized, science-backed training, nutrition, and supplement guidance for competitive athletes and fitness enthusiasts. It requires a paid coaching plan to access its full features.

Highlights
  • Individualized training plans
  • Evidence-based nutrition guidance
  • Supplementation strategies
  • For physique and strength athletes
  • For training enthusiasts
Features
Read full description

Grey Matter Training is a service providing individualized, evidence-based training, nutrition, and supplementation plans for competitive physique athletes, strength athletes, and training enthusiasts alike. *Requires paid coaching plan Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy

About

Coach Jon

Achieve your fitness goals with personalized training and nutrition plans. Get expert coaching, real-time accountability, and progress tracking to build muscle, gain strength, or achieve a lean physique.

Highlights
  • Customized workout programs
  • Personalized nutrition guidance
  • Progress and habit tracking
  • 24/7 in-app chat support
  • Weekly coaching check-ins
Features
Read full description

Transform your body with expert coaching, personalized training plans, and real-time accountability—all in one powerful app. Whether you’re looking to build muscle, gain strength, or achieve a lean, aesthetic physique, this provides the structure and guidance you need to reach your goals. Key Features: Customised Workout Programs – Tailored strength and hypertrophy-focused plans designed for your specific goals, experience level, and available equipment. Personalised Nutrition Guidance – Meal plans customised to your preferences, macros, and lifestyle to help you fuel your body efficiently. Progress & Habit Tracking – Monitor key metrics like weight, strength, and adherence to habits, ensuring continuous progress toward your transformation. 24/7 In-App Chat Support – Get direct access to expert guidance, check-ins, and accountability whenever you need it. Weekly Coaching Check-Ins – Stay on track with regular progress reviews, goal setting, and strategic adjustments to your plan. This is designed for action-oriented individuals ready to commit to real change. Take the guesswork out of your fitness journey and build the physique you’ve always wanted—all with expert support at your fingertips. * App access requires paid coaching plan Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy

Screenshots

Grey Matter Training3 screens
Coach Jon3 screens

Verdict

The call

The clearest difference is update cadence: Grey Matter Training at monthly against Coach Jon's every 3 months. Grey Matter Training also leads on ratings volume (3 vs 1). On price, rating, ads and in-app purchases 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. Grey Matter Training sells 1 in-app purchase, starting at $399.99 per month and Coach Jon sells 1 in-app purchase, starting at $200.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Grey Matter Training against 5.0 for Coach Jon. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

Grey Matter Training ships an update monthly, Coach Jon every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Grey Matter Training versus Coach Jon: the parameters behind the verdict, then further details
ParameterGrey Matter TrainingCoach Jon
PriceFreeFree
Rating5.0 (3 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings3 — better1
Update frequencyMonthly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size47 MB56 MB
Age rating17+17+
DeveloperMichael WhiteJonathan Walland

Customer experience

Grey Matter Training

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Coach Jon

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Grey Matter Training

Subscriptions1
  • Monthly Coaching$399.991 Month
1 purchases

Coach Jon

Subscriptions1
  • 1-1 coaching$200.001 Month

Questions

Is Grey Matter Training free?
Grey Matter Training is free to download, with in-app purchases available.
Is Coach Jon free?
Coach Jon is free to download, with in-app purchases available.
Which has better reviews, Grey Matter Training or Coach Jon?
Grey Matter Training and Coach Jon are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do Grey Matter Training or Coach Jon have ads?
Neither Grey Matter Training nor Coach Jon shows ads.
Which is updated more often, Grey Matter Training or Coach Jon?
Grey Matter Training ships an update monthly, and Coach Jon every 3 months. Most recently, Grey Matter Training was updated on November 3, 2026 and Coach Jon on October 30, 2026.

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