# Mat Time Tracker vs Kimura

The clearest difference is in-app purchases: Mat Time Tracker at none against Kimura's 4. Mat Time Tracker also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Kimura sells 4 in-app purchases, starting at $12.99 per month. Mat Time Tracker asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 26, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Mat Time Tracker | Kimura |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (26 ratings)](https://appshunter.io/ios/app/kimura-bjj-notes-and-sessions/id6736634052/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 61.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 102 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Duffy](https://appshunter.io/developer/1716773094) | [Aurelius Applications Inc.](https://appshunter.io/developer/1769512376) |

## What reviewers say

### Mat Time Tracker

[App page](https://appshunter.io/ios/app/mat-time-tracker/id6472210813)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kimura

[App page](https://appshunter.io/ios/app/kimura-bjj-notes-and-sessions/id6736634052)

Log your Brazilian Jiu Jitsu techniques and training sessions. Organize your moves, connect them into flows, and visualize your game. Access lessons on stoicism and warrior spirit, and save techniques for later practice.

**Highlights:** Track Jiu Jitsu techniques, Record BJJ sessions, Access 100+ lessons, Save techniques for later, Link techniques into flows, Visualize your game, Add technique videos

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $12.99 | per month |
| Annual (Free Trial) | $69.99 | per year |
| Annual | $69.99 | per year |
| Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Mat Time Tracker free?

Mat Time Tracker is free to download, with no in-app purchases.

### Is Kimura free?

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

### Do Mat Time Tracker or Kimura have ads?

Neither Mat Time Tracker nor Kimura shows ads.

### Which is updated more often, Mat Time Tracker or Kimura?

Mat Time Tracker ships an update fortnightly, and Kimura fortnightly. Most recently, Mat Time Tracker was updated on September 26, 2026 and Kimura on October 17, 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.*