# Pi Generator vs ZeroOneFlow

Pi Generator and ZeroOneFlow are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Pi Generator sells 1 one-off in-app purchase and ZeroOneFlow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Pi Generator ships an update every 10 days, ZeroOneFlow every 3 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Pi Generator | ZeroOneFlow |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 35 MB | 1 MB |
| Requires iOS | **15.6** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Duenas](https://appshunter.io/developer/1083533055) | [Fu Ni](https://appshunter.io/developer/1560534229) |

## 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 |


### ZeroOneFlow

[App page](https://appshunter.io/ios/app/zerooneflow/id1563516711)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tornado | $0.99 | one-time |


## Frequently asked questions

### Is Pi Generator free?

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

### Is ZeroOneFlow free?

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

### Do Pi Generator or ZeroOneFlow have ads?

Neither Pi Generator nor ZeroOneFlow shows ads.

### Which is updated more often, Pi Generator or ZeroOneFlow?

Pi Generator ships an update every 10 days, and ZeroOneFlow every 3 weeks. Most recently, Pi Generator was updated on October 24, 2026 and ZeroOneFlow on October 7, 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.*