# GrappleCosmos vs Matlock

The clearest difference is in-app purchases: GrappleCosmos at none against Matlock's 1. GrappleCosmos also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. Matlock sells 1 in-app purchase, starting at $4.99 per month. GrappleCosmos asks for nothing beyond the download.

GrappleCosmos ships an update weekly, Matlock every 2 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GrappleCosmos | Matlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/matlock-bjj-study-app/id6755410310/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 24 MB | 48 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Alexander Gorer](https://appshunter.io/developer/1091950162) | [Ashlee Spradley](https://appshunter.io/developer/1847742148) |

## What reviewers say

### GrappleCosmos

[App page](https://appshunter.io/ios/app/grapplecosmos-bjj-techniques/id6471621283)

**Features:** macOS Compatibility

**In-app purchases:** none


### Matlock

[App page](https://appshunter.io/ios/app/matlock-bjj-study-app/id6755410310)

This app helps practitioners of Brazilian Jiu-Jitsu improve their skills by studying techniques, positions, and submissions. It offers tools like flashcards and notes for faster review and better performance on the mat.

**Highlights:** Technique memorization, Jiu-Jitsu skill improvement, Grappling skill building, Study positions and submissions, Flashcards for review, Daily training tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Matlock Premium | $4.99 | per month |


## Frequently asked questions

### Is GrappleCosmos free?

GrappleCosmos is free to download, with no in-app purchases.

### Is Matlock free?

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

### Do GrappleCosmos or Matlock have ads?

Matlock shows ads; GrappleCosmos does not.

### Which is updated more often, GrappleCosmos or Matlock?

GrappleCosmos ships an update weekly, and Matlock every 2 weeks. Most recently, GrappleCosmos was updated on October 30, 2026 and Matlock on October 28, 2026.

---

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