# BJJ Diary vs SubmitKit

The clearest difference is iOS requirement: BJJ Diary at 15.1 against SubmitKit's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. BJJ Diary sells 1 in-app purchase, starting at $1.99 per month and SubmitKit sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

BJJ Diary ships an update every 10 days, SubmitKit weekly. Both last shipped on October 8, 2026.

## The numbers

| Metric | BJJ Diary | SubmitKit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 41 MB | 35 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Northfield Studio](https://appshunter.io/developer/1844151718) | [JAYCO LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1893569647) |

## What reviewers say

### BJJ Diary

[App page](https://appshunter.io/ios/app/bjj-diary/id6757426076)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 柔術日記 Plus | $1.99 | per month |


### SubmitKit

[App page](https://appshunter.io/ios/app/submitkit-bjj-tech-library/id6762257582)

Easily save and organize BJJ technique videos from social media into a personal library. AI automatically tags each technique, allowing for quick searching and filtering to build and improve your grappling game.

**Highlights:** Import videos from Instagram and Facebook, AI auto-tagging of techniques, Full-text search of library, Filter by technique tags, Track drilled techniques, Build personalized BJJ game

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubmitKit Pro | $6.99 | per month |
| SubmitKit | $47.99 | per year |


## Frequently asked questions

### Is BJJ Diary free?

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

### Is SubmitKit free?

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

### Do BJJ Diary or SubmitKit have ads?

Neither BJJ Diary nor SubmitKit shows ads.

### Which is updated more often, BJJ Diary or SubmitKit?

BJJ Diary ships an update every 10 days, and SubmitKit weekly. Most recently, BJJ Diary was updated on October 8, 2026 and SubmitKit on October 8, 2026.

---

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