# π Challenge vs 3.14 Master Pi

The clearest difference is in-app purchases: π Challenge at none against 3.14 Master Pi's 5. π Challenge also leads on iOS requirement (13.0 vs 15.1). 3.14 Master Pi's advantage is update cadence (every 2 months vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. 3.14 Master Pi sells 5 one-off in-app purchases. π Challenge asks for nothing beyond the download.

π Challenge ships an update every 9 months, 3.14 Master Pi every 2 months. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | π Challenge | 3.14 Master Pi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Size | 29 MB | 47 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Warashibe Tech LLC](https://appshunter.io/developer/1567747524) | [David Brown](https://appshunter.io/developer/1848509879) |

## What reviewers say

### π Challenge

[App page](https://appshunter.io/ios/app/challenge/id6743357759)

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

**In-app purchases:** none


### 3.14 Master Pi

[App page](https://appshunter.io/ios/app/314-master-pi/id6754499094)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Summation Supporter | $2.99 | one-time |
| Premium (Lifetime) | $4.99 | one-time |
| Radical Patron | $9.99 | one-time |
| Infinite Supporter | $29.99 | one-time |
| Pi Master | $99.99 | one-time |


## Frequently asked questions

### Is π Challenge free?

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

### Is 3.14 Master Pi free?

3.14 Master Pi is free to download, with in-app purchases available.

### Do π Challenge or 3.14 Master Pi have ads?

Neither π Challenge nor 3.14 Master Pi shows ads.

### Which is updated more often, π Challenge or 3.14 Master Pi?

π Challenge ships an update every 9 months, and 3.14 Master Pi every 2 months. Most recently, π Challenge was updated on September 24, 2026 and 3.14 Master Pi on September 8, 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.*