# Grey Matter Training vs Renu by Sam Thai

The clearest difference is update cadence: Grey Matter Training at monthly against Renu by Sam Thai's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Grey Matter Training sells 1 in-app purchase, starting at $399.99 per month and Renu by Sam Thai sells 1 in-app purchase, starting at $200.00 per month. Whichever you choose, the download price is not the number that matters.

Grey Matter Training ships an update monthly, Renu by Sam Thai every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Grey Matter Training | Renu by Sam Thai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grey-matter-training/id6444868629/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 56 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Michael White](https://appshunter.io/developer/1657473344) | [Sam Hughes](https://appshunter.io/developer/1810705668) |

## What reviewers say

### Grey Matter Training

[App page](https://appshunter.io/ios/app/grey-matter-training/id6444868629)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coaching | $399.99 | per month |


### Renu by Sam Thai

[App page](https://appshunter.io/ios/app/renu-by-sam-thai/id6745097713)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coaching | $200.00 | per month |


## Frequently asked questions

### Is Grey Matter Training free?

Grey Matter Training is free to download, with in-app purchases available.

### Is Renu by Sam Thai free?

Renu by Sam Thai is free to download, with in-app purchases available.

### Do Grey Matter Training or Renu by Sam Thai have ads?

Neither Grey Matter Training nor Renu by Sam Thai shows ads.

### Which is updated more often, Grey Matter Training or Renu by Sam Thai?

Grey Matter Training ships an update monthly, and Renu by Sam Thai every 4 months. Most recently, Grey Matter Training was updated on November 3, 2026 and Renu by Sam Thai on October 30, 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.*