# GrappleDex vs SubMetrix

The clearest difference is update cadence: SubMetrix at every 4 days against GrappleDex's monthly. SubMetrix also leads on ratings volume (6 vs 1). GrappleDex's advantage is iOS requirement (15.1 vs 26.2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. GrappleDex sells 1 in-app purchase, starting at $2.99 per month and SubMetrix sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for GrappleDex against 5.0 for SubMetrix. That said, the two scores are not equally well evidenced: SubMetrix has 6 ratings behind it against 1, so its average is the more settled of the two.

GrappleDex ships an update monthly, SubMetrix every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | GrappleDex | SubMetrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/grappledex-your-bjj-tracker/id6753132558/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/submetrix-jiu-jitsu-guide/id6765980744/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 69 MB | 19 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aoshen Zhou](https://appshunter.io/developer/1814075873) | [Dane Chapman](https://appshunter.io/developer/1825216114) |

## What reviewers say

### GrappleDex

[App page](https://appshunter.io/ios/app/grappledex-your-bjj-tracker/id6753132558)

Log your Brazilian Jiu-Jitsu training sessions to track progress and understand your game. Set training focuses, review past sessions, and identify patterns in your techniques and positions. Stay consistent with reminders and weekly summaries.

**Highlights:** Log BJJ sessions with positions, techniques, and notes, Tag sessions as Gi or No-Gi, Search training history instantly, Set session focus and track accountability, Visualize progress with heatmaps and graphs, Compare related sessions for pattern identification, Weekly summaries and logging reminders

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GrappleDex Pro | $2.99 | per month |


### SubMetrix

[App page](https://appshunter.io/ios/app/submetrix-jiu-jitsu-guide/id6765980744)

This app helps Jiu-Jitsu practitioners track their training sessions, analyze their performance, and improve their skills. It provides detailed insights into submissions, positions, and weaknesses, offering tools like flow maps and flashcards to enhance learning and strategy.

**Highlights:** Track every roll with details, Analyze submissions and weaknesses, Visualize game flow and build plans, Improve knowledge with flashcards, AI companion for technique guidance, Performance analytics and data export

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubMetrix Pro (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is GrappleDex free?

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

### Is SubMetrix free?

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

### Which has better reviews, GrappleDex or SubMetrix?

GrappleDex and SubMetrix are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do GrappleDex or SubMetrix have ads?

Neither GrappleDex nor SubMetrix shows ads.

### Which is updated more often, GrappleDex or SubMetrix?

GrappleDex ships an update monthly, and SubMetrix every 4 days. Most recently, GrappleDex was updated on October 24, 2026 and SubMetrix on October 24, 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.*