# The Math Flash Machine vs Chi Rhoan

The clearest difference is price: Chi Rhoan at Free against The Math Flash Machine's $0.99. Chi Rhoan also leads on update cadence (every 6 days vs every 30 months). The Math Flash Machine's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 17.0). On ads and in-app purchases there is nothing between them.

Chi Rhoan is free to download; The Math Flash Machine costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

The Math Flash Machine ships an update every 30 months, Chi Rhoan every 6 days. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | The Math Flash Machine | Chi Rhoan |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (15 ratings)](https://appshunter.io/ios/app/chi-rhoan/id6797942217/reviews)** |
| Number of ratings | — | **15** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 11 MB | 43 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Bishop McGuinness High School](https://appshunter.io/developer/1442320359) |

## What reviewers say

### The Math Flash Machine

[App page](https://appshunter.io/ios/app/the-math-flash-machine/id1003509894)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chi Rhoan

[App page](https://appshunter.io/ios/app/chi-rhoan/id6797942217)

Access school news, event schedules, and live sports updates from Bishop McGuinness Catholic High School. Manage your IrishID for event check-ins and stay connected with campus activities.

**Highlights:** School news updates, Campus event schedules, Live sports coverage, IrishID management, Event check-in functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is The Math Flash Machine free?

The Math Flash Machine costs $0.99, with no in-app purchases.

### Is Chi Rhoan free?

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

### Do The Math Flash Machine or Chi Rhoan have ads?

Neither The Math Flash Machine nor Chi Rhoan shows ads.

### Which is updated more often, The Math Flash Machine or Chi Rhoan?

The Math Flash Machine ships an update every 30 months, and Chi Rhoan every 6 days. Most recently, The Math Flash Machine was updated on September 30, 2026 and Chi Rhoan on October 6, 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.*