# IBJJF Rules vs KENDO

The clearest difference is review sentiment: IBJJF Rules at 89% against KENDO's 33%. IBJJF Rules also leads on rating (4.8 vs 4.0) and ratings volume (697 vs 7). KENDO's advantage is update cadence (every 2 days vs every 5 months) and iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IBJJF Rules holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: IBJJF Rules has 697 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 89% of IBJJF Rules's written reviews are positive against 33% of KENDO's.

IBJJF Rules ships an update every 5 months, KENDO every 2 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | IBJJF Rules | KENDO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (697 ratings)](https://appshunter.io/ios/app/ibjjf-rules/id667446064/reviews)** | [4.0 (7 ratings)](https://appshunter.io/ios/app/kendo/id1525066217/reviews) |
| Number of ratings | **697** | 7 |
| Positive reviews | **89.3% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 4 MB | 24 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [smudge.io PTY LTD](https://appshunter.io/developer/426335181) | [John Ou](https://appshunter.io/developer/1513587862) |

## What reviewers say

### IBJJF Rules

[App page](https://appshunter.io/ios/app/ibjjf-rules/id667446064)

Access a comprehensive guide to International Brazilian Jiu Jitsu Federation competition rules. Quickly find details on scoring, fouls, age and weight limits, and fight durations for referees, coaches, and athletes.

**Highlights:** IBJJF rules reference, Severe technical fouls, Points and scoring, Age limits, Weight classes, Fight durations

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive user interface
- 🚀 Quick reference guide for rules
- 📚 Comprehensive IBJJF ruleset information
- ⚡ Easy navigation and accessibility
- 🎯 Helpful for competitors, coaches, and referees

**What reviewers complain about**

- 📖 Insufficient detailed information
- 🔄 Outdated rule updates
- 🌐 Limited language options

**Reported bugs**

- App functionality issues (non-functional features)

**Requested features**

- Weight classes and divisions tab
- Portuguese language support
- Updated IBJJF 2020+ rules
- AJP (Asian Jiu-Jitsu Pro) rules inclusion


### KENDO

[App page](https://appshunter.io/ios/app/kendo/id1525066217)

This app provides Kendo education, news, and articles for practitioners of all levels. Learn about Bogu, fitness, and well-being through videos and written content. It's designed for self-study and exploring Kendo Budo culture.

**Highlights:** Kendo educational videos, News and articles, Bogu information, Fitness and well-being advice, Self-study resources, Kendo Budo culture exploration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IBJJF Rules free?

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

### Is KENDO free?

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

### Which has better reviews, IBJJF Rules or KENDO?

IBJJF Rules is rated higher. IBJJF Rules averages 4.8 out of 5 from 697 ratings, while KENDO averages 4.0 from 7 ratings.

### Do IBJJF Rules or KENDO have ads?

Neither IBJJF Rules nor KENDO shows ads.

### Which is updated more often, IBJJF Rules or KENDO?

IBJJF Rules ships an update every 5 months, and KENDO every 2 days. Most recently, IBJJF Rules was updated on October 23, 2026 and KENDO on October 24, 2026.

---

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