# Rule-Base — Referee Rules: Confident Calls

> Referee Rules: Confident Calls (iPhone/iPad app by SEIICHI MIYAKO.)

- Source: https://appshunter.io/ios/app/rule-base/id6777624808 (this page in markdown: same URL + `.md`)
- Developer: [SEIICHI MIYAKO](https://appshunter.io/developer/6777005672)
- Category: Sports, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 14.0.0 · 43 MB
- Languages: American English, Japanese, Korean, European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-06-27
- Data updated: 2026-07-24
- User reviews in markdown: https://appshunter.io/ios/app/rule-base/id6777624808/reviews.md

## What is Rule?

【Rule-Bace: AI Rule Assistant for Referees】
"Was that the right call according to the rules?"
"I'm officiating for the first time... am I sure I know the rules well enough?"

Rule-Bace is the ultimate partner for referees, helping clear up doubts mid-game and supporting those looking to refine their officiating skills so they can step onto the field or court with total confidence.

■ Key Features

Fast AI Rule Search
Simply ask in natural language—like "Is this situation a foul?" or "How should play restart here?"—and get instant answers drawn from official rule data, explained clearly even for beginners.

International Rulebook Compliance
Powered by official international rulebooks across soccer, baseball, basketball, tennis, volleyball, and futsal, providing accurate and up-to-date guidance.

Multi-Sport Support
Ideal for referees officiating multiple sports. Easily switch between sports to access specialized rule standards immediately.

Perfect for Pre & Post-Game Review
Great not only for quick checks during matches, but also for pre-game prep and reviewing training materials. Less experienced officials can systematically build knowledge and hone their skills.

■ Recommended For

・Beginner referees looking to learn rules from the ground up.
・Anyone wanting a quick, accurate way to consult official rulebooks.
・Coaches and officials making pre-game prep a regular habit to build confidence.
・Referees who manage multiple sports and need to keep rules organized.

[Disclaimer]
This app is a third-party tool developed by referencing official international sports rules. It is not affiliated with or endorsed by any official sports governing bodies. While AI responses aim to support you based on official rulebooks, the referee's final judgment always takes precedence during a match. For the latest rule changes and operational regulations, please check the official websites of the respective governing bodies.
■ Terms of Service
https://tan-principle-379.notion.site/Terms-of-Service-3723b0dd7e4580e7af79d99b53de06a3?source=copy_link

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Rule-Base Pro | $2.99 | per month |



## Version history (last 3 releases)

### 1.1.0 — 2026-07-23

1.1.0

・Added Baseball, Tennis, and Volleyball, now supporting 6 sports in total.
・Set sport-specific question samples to help you find answers even faster.
・Minor bug fixes and performance improvements.

### 1.0.1 — 2026-07-18

1.0.1
- Improved the question input experience for smoother and more comfortable use.
- Added Answer History and Favorites features, making it easier to review past answers later.
- Refreshed App Store screenshots to provide a clearer and better understanding of the app's features.

### 1.0 — 2026-06-27

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-24.*