# Poker "M" Calculator vs Rule Referee

The clearest difference is in-app purchases: Poker "M" Calculator at none against Rule Referee's 1. Poker "M" Calculator also leads on iOS requirement (15.6 vs 17.0). Rule Referee's advantage is ads (none vs shown) and update cadence (monthly vs every 4 months). On price, rating, ratings volume and device support there is nothing between them.

Both are free to download. Rule Referee sells 1 in-app purchase, starting at $2.99 per month. Poker "M" Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Poker "M" Calculator against 5.0 for Rule Referee. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Poker "M" Calculator ships an update every 4 months, Rule Referee monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Poker "M" Calculator | Rule Referee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/poker-m-calculator/id1571244342/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/rule-referee/id6762228503/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 21 MB | 124 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Zagala](https://appshunter.io/developer/1063628297) | [Autumn Wohlwend](https://appshunter.io/developer/1893451234) |

## What reviewers say

### Poker "M" Calculator

[App page](https://appshunter.io/ios/app/poker-m-calculator/id1571244342)

Calculate the M-value, a metric used in poker to assess a player's stack size relative to the blinds. This tool helps players understand their tournament standing and make strategic decisions.

**Highlights:** Calculate M-value, Poker tournament strategy aid, Stack size assessment, Blind relative analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Rule Referee

[App page](https://appshunter.io/ios/app/rule-referee/id6762228503)

Get instant, accurate answers to board and card game rules without searching through manuals. This app provides clear, deterministic answers to keep your games moving smoothly. Access rules offline and enjoy a built-in timer for supported games.

**Highlights:** Instant rule answers, Offline access, Built-in game timer, Supports 79+ games, No AI guesswork, Deterministic answers

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rule Referee All Access | $2.99 | per month |


## Frequently asked questions

### Is Poker "M" Calculator free?

Poker "M" Calculator is free to download, with no in-app purchases.

### Is Rule Referee free?

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

### Which has better reviews, Poker "M" Calculator or Rule Referee?

Poker "M" Calculator and Rule Referee are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Poker "M" Calculator or Rule Referee have ads?

Poker "M" Calculator shows ads; Rule Referee does not.

### Which is updated more often, Poker "M" Calculator or Rule Referee?

Poker "M" Calculator ships an update every 4 months, and Rule Referee monthly. Most recently, Poker "M" Calculator was updated on November 3, 2026 and Rule Referee on October 31, 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.*