IBJJF Rules vs KENDO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IBJJF Rules
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.
- IBJJF rules reference
- Severe technical fouls
- Points and scoring
- Age limits
- Weight classes
- Fight durations
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This app provides a ready reference for referees, coaches and athletes involved in International Brazilian Jiu Jitsu Federation competitions. Details of IBJJF rules including severe technical fouls, points, age limits, weights and fight durations are provided. This app is not endorsed by or affiliated with the International Brazilian Jiu Jitsu Federation.
KENDO
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.
- Kendo educational videos
- News and articles
- Bogu information
- Fitness and well-being advice
- Self-study resources
- Kendo Budo culture exploration
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First APP that brings Kendo education on the go, news, articles and videos to get you start. The app is for all level of Kendo practitioner. Features includes: *Videos *Articles *Bogu informations *Fitness & wellbing advices It's a simple APP for self study and deep dive into Kendo Budo cultures.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | IBJJF Rules | KENDO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (697 ratings) — better | 4.0 (7 ratings) |
| Positive reviews | 89.3% of reviews — better | 33.3% of reviews |
| Number of ratings | 697 — better | 7 |
| Update frequency | Every 5 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | smudge.io PTY LTD | John Ou |
Customer experience
IBJJF Rules
KENDO
Bugs and requests
IBJJF Rules
Reported bugs
1 issue- App functionality issues (non-functional features)
Requested features
4 requests- Weight classes and divisions tab
- Portuguese language support
- Updated IBJJF 2020+ rules
- AJP (Asian Jiu-Jitsu Pro) rules inclusion
KENDO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
IBJJF Rules
No in-app purchases
KENDO
No in-app purchases
