# KruBoss Rollers vs BJJ Flash Cards

The clearest difference is rating: KruBoss Rollers at 3.5 against BJJ Flash Cards's 3.0. KruBoss Rollers also leads on in-app purchases (none vs 2) and update cadence (monthly vs every 6 months). BJJ Flash Cards's advantage is ratings volume (6 vs 2). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. BJJ Flash Cards sells 2 in-app purchases, starting at $99.99 per month. KruBoss Rollers asks for nothing beyond the download.

KruBoss Rollers holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

KruBoss Rollers ships an update monthly, BJJ Flash Cards every 6 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | KruBoss Rollers | BJJ Flash Cards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/kruboss-rollers/id1372458267/reviews)** | [3.0 (6 ratings)](https://appshunter.io/ios/app/bjj-flash-cards/id1615350888/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 48 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Globules Interactive Limited](https://appshunter.io/developer/978694053) | [Jon Zorn](https://appshunter.io/developer/1571624826) |

## What reviewers say

### KruBoss Rollers

[App page](https://appshunter.io/ios/app/kruboss-rollers/id1372458267)

Connect with the global Brazilian Jiu-Jitsu community. Discover gyms, find training partners, share your progress, and upload videos to engage with fellow enthusiasts. Customize your profile to represent your BJJ style.

**Highlights:** Discover BJJ gyms and mats, Advertise home gyms or rolling spaces, Connect with local BJJ fans, Track and share progress, Upload videos and engage, Customize Gi and NoGi profiles

**In-app purchases:** none


### BJJ Flash Cards

[App page](https://appshunter.io/ios/app/bjj-flash-cards/id1615350888)

This app helps you master Brazilian Jiu Jitsu techniques by using spaced repetition and active recall. It offers personalized review schedules and two practice modes: mental and physical. It acts as a comprehensive encyclopedia for grappling techniques.

**Highlights:** Personalized review scheduling, Active recall learning, Spaced repetition system, Mental practice mode, Physical practice mode, Technique encyclopedia

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $99.99 | per month |
| Yearly | $399.99 | per year |


## Frequently asked questions

### Is KruBoss Rollers free?

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

### Is BJJ Flash Cards free?

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

### Which has better reviews, KruBoss Rollers or BJJ Flash Cards?

KruBoss Rollers is rated higher. KruBoss Rollers averages 3.5 out of 5 from 2 ratings, while BJJ Flash Cards averages 3.0 from 6 ratings.

### Do KruBoss Rollers or BJJ Flash Cards have ads?

Neither KruBoss Rollers nor BJJ Flash Cards shows ads.

### Which is updated more often, KruBoss Rollers or BJJ Flash Cards?

KruBoss Rollers ships an update monthly, and BJJ Flash Cards every 6 months. Most recently, KruBoss Rollers was updated on October 24, 2026 and BJJ Flash Cards on October 23, 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.*