# Pi Generator vs OTT25

The clearest difference is in-app purchases: OTT25 at none against Pi Generator's 1. OTT25 also leads on iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Pi Generator sells 1 one-off in-app purchase. OTT25 asks for nothing beyond the download.

## The numbers

| Metric | Pi Generator | OTT25 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/pi-generator/id1083533056/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Free | — |
| Size | 35 MB | 36 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mark Duenas](https://appshunter.io/developer/1083533055) | [Stefan Kessler](https://appshunter.io/developer/1492978971) |

## What reviewers say

### Pi Generator

[App page](https://appshunter.io/ios/app/pi-generator/id1083533056)

This app generates a large number of pi digits, up to 100,000. It also offers a practice mode for learning pi. Test your device's capabilities with extensive pi calculations.

**Highlights:** Generates up to 10,000 digits of pi, View up to 100,000 digits, Practice learning pi, Device performance testing

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### OTT25

[App page](https://appshunter.io/ios/app/ott25/id6740314149)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pi Generator free?

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

### Is OTT25 free?

OTT25 is free to download, with no in-app purchases.

### Do Pi Generator or OTT25 have ads?

Neither Pi Generator nor OTT25 shows ads.

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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.*