# By Rule vs RefScore

The clearest difference is in-app purchases: RefScore at none against By Rule's 7. RefScore also leads on iOS requirement (15.1 vs 18.0). On price, 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. RefScore asks for nothing beyond the download.

## The numbers

| Metric | By Rule | RefScore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (20 ratings)](https://appshunter.io/ios/app/by-rule/id1532845521/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 185 MB | 38 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Aupont](https://appshunter.io/developer/1532845523) | [RefMasters.com LLC](https://appshunter.io/developer/1640142867) |

## 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 |


### RefScore

[App page](https://appshunter.io/ios/app/refscore/id6811416688)

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

**In-app purchases:** none


## Frequently asked questions

### Is By Rule free?

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

### Is RefScore free?

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

### Do By Rule or RefScore have ads?

Neither By Rule nor RefScore shows ads.

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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.*