# By Rule vs Arbiter

The clearest difference is review sentiment: By Rule at 100% against Arbiter's 32%. By Rule also leads on rating (5.0 vs 4.4). Arbiter's advantage is in-app purchases (none vs 7) and ratings volume (1.2K vs 20). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. By Rule sells 7 in-app purchases, starting at $1.99 per month. Arbiter asks for nothing beyond the download.

By Rule holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Arbiter has 1.2K ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 100% of By Rule's written reviews are positive against 32% of Arbiter's.

By Rule ships an update every 3 weeks, Arbiter fortnightly. The most recent releases landed on September 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | By Rule | Arbiter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (20 ratings)](https://appshunter.io/ios/app/by-rule/id1532845521/reviews)** | [4.4 (1.2K ratings)](https://appshunter.io/ios/app/arbiter/id1570396662/reviews) |
| Number of ratings | 20 | **1.2K** |
| Positive reviews | **100.0% of reviews** | 32.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#97** |
| Size | 185 MB | 67 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Aupont](https://appshunter.io/developer/1532845523) | [ArbiterSports LLC](https://appshunter.io/developer/493565302) |

## What reviewers say

### By Rule

[App page](https://appshunter.io/ios/app/by-rule/id1532845521)

Master NCAA basketball rules with this AI-powered study tool. Features flashcards, quizzes, audio rules, video clips, and instant AI interpretations to help officials, coaches, and players learn and track their progress.

**Highlights:** AI-powered study companion, Flashcards and quizzes, Audio rules and video clips, Instant AI rules interpretations, Progress tracking and analytics, Real-game scenarios

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| By Rule Pro Monthly | $1.99 | per month |
| By Rule Standard Monthly | $6.99 | per month |
| By Rule Pro | $6.99 | per month |
| By Rule Pro Annual | $17.99 | per year |
| By Rule Pro Monthly | $19.99 | per month |
| By Rule Pro Annual | $19.99 | per year |
| By Rule Pro | $179.99 | per year |


### Arbiter

[App page](https://appshunter.io/ios/app/arbiter/id1570396662)

**Currently charting:** #97 Top Free · Sports (US App Store)

Manage school events, track schedules, record scores, and handle payments for administrators, officials, and fans. Stay connected to your favorite teams and follow game updates seamlessly.

**Highlights:** View schedules and team information, Record scores accurately, Make secure payments, Accept game assignments, Manage availability blocks, Track game payments and transfers, Follow favorite schools and teams

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

**In-app purchases:** none

**What reviewers like**

- 👍 Improved mobile interface design
- 🚀 Faster app performance and less crashing
- 📅 Easy schedule viewing and management
- ✅ Simple game acceptance workflow
- 💰 Straightforward money transfer to bank

**What reviewers complain about**

- 🐛 Frequent login failures and authentication issues
- 🔄 Constant forced logouts during use
- ❌ Missing school contact information
- 📋 Schedule doesn't display properly on app
- 🔐 Two-factor authentication required every login

**Reported bugs**

- Login credentials not recognized despite working on website
- App logs user out after short inactivity
- Schedule fails to load or display
- Blank screens on home, connect, and profile tabs
- Calendar navigation jumps to wrong dates

**Requested features**

- Coach names visible before games
- Monitor crew assignments display
- Mileage tracking for tax purposes
- Stay logged in option
- Calendar export to phone calendar


## Frequently asked questions

### Is By Rule free?

By Rule is free to download, with in-app purchases available.

### Is Arbiter free?

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

### Which has better reviews, By Rule or Arbiter?

By Rule is rated higher. By Rule averages 5.0 out of 5 from 20 ratings, while Arbiter averages 4.4 from 1.2K ratings.

### Do By Rule or Arbiter have ads?

Neither By Rule nor Arbiter shows ads.

### Which is updated more often, By Rule or Arbiter?

By Rule ships an update every 3 weeks, and Arbiter fortnightly. Most recently, By Rule was updated on September 21, 2026 and Arbiter on October 19, 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.*