# π Challenge vs Hakoniwa AI

The clearest difference is update cadence: Hakoniwa AI at daily against π Challenge's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

π Challenge ships an update every 9 months, Hakoniwa AI daily. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | π Challenge | Hakoniwa AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Daily** |
| Size | 29 MB | 27 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Warashibe Tech LLC](https://appshunter.io/developer/1567747524) | [SHIN TOMURA](https://appshunter.io/developer/1826530290) |

## What reviewers say

### π Challenge

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

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

**In-app purchases:** none


### Hakoniwa AI

[App page](https://appshunter.io/ios/app/hakoniwa-ai/id6759540294)

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

**In-app purchases:** none


## Frequently asked questions

### Is π Challenge free?

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

### Is Hakoniwa AI free?

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

### Do π Challenge or Hakoniwa AI have ads?

Neither π Challenge nor Hakoniwa AI shows ads.

### Which is updated more often, π Challenge or Hakoniwa AI?

π Challenge ships an update every 9 months, and Hakoniwa AI daily. Most recently, π Challenge was updated on October 25, 2026 and Hakoniwa AI on October 24, 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.*