# IBJJF Rules vs Boxing Timer Interval

The clearest difference is in-app purchases: IBJJF Rules at none against Boxing Timer Interval's 3. IBJJF Rules also leads on review sentiment (89% vs 62%) and ratings volume (693 vs 37). Boxing Timer Interval's advantage is update cadence (every 3 weeks vs every 5 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Boxing Timer Interval sells 3 in-app purchases, starting at $2.99 per 7 days. IBJJF Rules asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for IBJJF Rules against 4.9 for Boxing Timer Interval. That said, the two scores are not equally well evidenced: IBJJF Rules has 693 ratings behind it against 37, so its average is the more settled of the two. Written reviews are what separate them: 89% of IBJJF Rules's written reviews are positive against 62% of Boxing Timer Interval's.

IBJJF Rules ships an update every 5 months, Boxing Timer Interval every 3 weeks. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | IBJJF Rules | Boxing Timer Interval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (693 ratings)](https://appshunter.io/ios/app/ibjjf-rules/id667446064/reviews) | **[4.9 (37 ratings)](https://appshunter.io/ios/app/boxing-timer-interval/id1577332517/reviews)** |
| Number of ratings | **693** | 37 |
| Positive reviews | **89.3% of reviews** | 61.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 7 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [smudge.io PTY LTD](https://appshunter.io/developer/426335181) | [App Box](https://appshunter.io/developer/1720178029) |

## 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


### Boxing Timer Interval

[App page](https://appshunter.io/ios/app/boxing-timer-interval/id1577332517)

This app provides a professional interval timer designed for boxing, martial arts, and fitness training. It allows users to create custom timers, offers flexible interval settings for all skill levels, and includes pre-set profiles for various sports. Audible signals indicate the start and end of rounds.

**Highlights:** Custom timer creation, Intuitive interface, Flexible interval settings, Pre-made sport profiles, Round start/end signals

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access for one week | $2.99 | per 7 days |
| Full access for one year | $14.99 | per year |
| Lifetime Full Access | $19.99 | one-time |


## Frequently asked questions

### Is IBJJF Rules free?

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

### Is Boxing Timer Interval free?

Boxing Timer Interval is free to download, with in-app purchases available.

### Which has better reviews, IBJJF Rules or Boxing Timer Interval?

Boxing Timer Interval is rated higher. IBJJF Rules averages 4.8 out of 5 from 693 ratings, while Boxing Timer Interval averages 4.9 from 37 ratings.

### Do IBJJF Rules or Boxing Timer Interval have ads?

Neither IBJJF Rules nor Boxing Timer Interval shows ads.

### Which is updated more often, IBJJF Rules or Boxing Timer Interval?

IBJJF Rules ships an update every 5 months, and Boxing Timer Interval every 3 weeks. Most recently, IBJJF Rules was updated on September 21, 2026 and Boxing Timer Interval on September 10, 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.*