# C vs The Training Notebook One

The clearest difference is rating: C at 5.0 against The Training Notebook One's 4.0. The Training Notebook One's advantage is update cadence (daily vs every 5 days) and device support (3 vs 1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. C sells 2 in-app purchases, starting at $4.99 per month and The Training Notebook One sells 6 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

C holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

C ships an update every 5 days, The Training Notebook One daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | C | The Training Notebook One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/c-rex-gym-workout-tracker/id6764214059/reviews)** | [4.0 (9 ratings)](https://appshunter.io/ios/app/the-training-notebook-one/id6797359285/reviews) |
| Number of ratings | 5 | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 125 MB | 44 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Jerry Kwong](https://appshunter.io/developer/1889200960) | [The Training Notebook, Inc.](https://appshunter.io/developer/505906868) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-rex-gym-workout-tracker/id6764214059)

This app verifies gym check-ins with GPS to track real progress and build streaks. It allows users to log workouts, compete on leaderboards, and connect with friends and local gym communities. Premium features offer advanced analytics and customization.

**Highlights:** GPS-verified gym check-ins, Workout logging (exercises, sets, reps, weight), Streaks and XP for gym attendance, Monthly gym leaderboards, Social features: follow friends, group challenges, Muscle group identification, Rest timer with Lock Screen Live Activities

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C-Rex Monthly Subscription | $4.99 | per month |
| C-Rex Yearly Subscription | $49.99 | per year |


### The Training Notebook One

[App page](https://appshunter.io/ios/app/the-training-notebook-one/id6797359285)

This app helps personal trainers manage client workouts, progress, and notes efficiently. It allows trainers to build custom programs quickly, track client check-ins, and visualize progress with photos and graphs. Clients can also access their own profiles to view workouts and log information.

**Highlights:** Build workouts and programs quickly, Client login and workout access, Progress photo comparison, Body weight and body fat graphs, Circumference measurements, Exercise history and personal records, Client intake forms

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $19.99 | per month |
| Growth Monthly | $39.99 | per month |
| Pro Monthly | $69.99 | per month |
| Starter Annual | $199.99 | per year |
| Growth Annual | $399.99 | per year |
| Pro Annual | $699.99 | per year |


## Frequently asked questions

### Is C free?

C is free to download, with in-app purchases available.

### Is The Training Notebook One free?

The Training Notebook One is free to download, with in-app purchases available.

### Which has better reviews, C or The Training Notebook One?

C is rated higher. C averages 5.0 out of 5 from 5 ratings, while The Training Notebook One averages 4.0 from 9 ratings.

### Do C or The Training Notebook One have ads?

Neither C nor The Training Notebook One shows ads.

### Which is updated more often, C or The Training Notebook One?

C ships an update every 5 days, and The Training Notebook One daily. Most recently, C was updated on October 31, 2026 and The Training Notebook One on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*