# Statistics Formulas vs Pi Masters

The clearest difference is in-app purchases: Pi Masters at none against Statistics Formulas's 7. Statistics Formulas's advantage is update cadence (every 3 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Statistics Formulas sells 7 one-off in-app purchases. Pi Masters asks for nothing beyond the download.

Statistics Formulas ships an update every 3 days, Pi Masters every 3 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Statistics Formulas | Pi Masters |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Size | 23 MB | 2 MB |
| Requires iOS | **16.6** | 17.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [NovaNext](https://appshunter.io/developer/1285557502) | [Dave Poirier](https://appshunter.io/developer/757241910) |

## What reviewers say

### Statistics Formulas

[App page](https://appshunter.io/ios/app/statistics-formulas/id6447047160)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Donate $3 | $2.99 | one-time |
| Donate $5 | $4.99 | one-time |
| Donate $10 | $9.99 | one-time |
| Donate $15 | $14.99 | one-time |
| Donate $20 | $19.99 | one-time |


### Pi Masters

[App page](https://appshunter.io/ios/app/pi-masters/id6504531645)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Statistics Formulas free?

Statistics Formulas is free to download, with in-app purchases available.

### Is Pi Masters free?

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

### Do Statistics Formulas or Pi Masters have ads?

Neither Statistics Formulas nor Pi Masters shows ads.

### Which is updated more often, Statistics Formulas or Pi Masters?

Statistics Formulas ships an update every 3 days, and Pi Masters every 3 months. Most recently, Statistics Formulas was updated on October 30, 2026 and Pi Masters on October 27, 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.*