# Harrys World vs Pi Digits

The clearest difference is review sentiment: Pi Digits at 100% against Harrys World's 50%. Pi Digits also leads on ads (none vs shown) and update cadence (monthly vs every 25 months). Harrys World's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and in-app purchases there is nothing between them.

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

Harrys World ships an update every 25 months, Pi Digits monthly. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Harrys World | Pi Digits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 25 months | **Monthly** |
| Monetization | Ad-supported | **Free** |
| Size | 25 MB | 11 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Chandler](https://appshunter.io/developer/1223478277) | [Slavka Polanova](https://appshunter.io/developer/1708764553) |

## What reviewers say

### Harrys World

[App page](https://appshunter.io/ios/app/harrys-world/id1298125836)

Navigate a retro-style game world as Harry, collecting coins within a time limit while evading robots. Find bonus time clocks to extend your play and increase your score. This addictive game offers hours of entertainment.

**Highlights:** Retro-based gameplay, Coin collection objective, Robot evasion mechanics, Time limit challenges, Bonus time clocks, Score bonuses

**Features:** macOS Compatibility

**In-app purchases:** none


### Pi Digits

[App page](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843)

Test your ability to memorize and recall digits of Pi. Engage in fast-paced challenges to extend your streak and improve your number recall. Ideal for students, puzzle enthusiasts, or anyone seeking a quick mental workout.

**Highlights:** Memorize digits of Pi, Classic typing mode, Timed Blitz mode, Track best streaks, Quick brain workouts, Suitable for all levels

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is Harrys World free?

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

### Is Pi Digits free?

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

### Do Harrys World or Pi Digits have ads?

Harrys World shows ads; Pi Digits does not.

### Which is updated more often, Harrys World or Pi Digits?

Harrys World ships an update every 25 months, and Pi Digits monthly. Most recently, Harrys World was updated on October 7, 2026 and Pi Digits on October 4, 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.*