# 3.14 Master Pi vs π Pi Challenge

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

Both are free to download. 3.14 Master Pi sells 5 one-off in-app purchases and π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 3.14 Master Pi | π Pi Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Size | 47 MB | 73 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Brown](https://appshunter.io/developer/1848509879) | [SIC Company Limited](https://appshunter.io/developer/1800842356) |

## What reviewers say

### 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 |


### π Pi Challenge

[App page](https://appshunter.io/ios/app/pi-challenge/id6756227034)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


## Frequently asked questions

### Is 3.14 Master Pi free?

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

### Is π Pi Challenge free?

π Pi Challenge is free to download, with in-app purchases available.

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

π Pi Challenge shows ads; 3.14 Master Pi does not.

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

3.14 Master Pi ships an update every 2 months, and π Pi Challenge every 2 months. Most recently, 3.14 Master Pi was updated on September 8, 2026 and π Pi Challenge on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*