# π Pi Challenge vs Shadow Me

The clearest difference is in-app purchases: Shadow Me at none against π Pi Challenge's 1. Shadow Me also leads on ads (none vs shown) and update cadence (daily vs every 2 months). π Pi Challenge's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price there is nothing between them.

Both are free to download. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month. Shadow Me asks for nothing beyond the download.

π Pi Challenge ships an update every 2 months, Shadow Me daily. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | π Pi Challenge | Shadow Me |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Daily** |
| Size | 73 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SIC Company Limited](https://appshunter.io/developer/1800842356) | [Zrindy LLC](https://appshunter.io/developer/1876720455) |

## What reviewers say

### π Pi Challenge

[App page](https://appshunter.io/ios/app/pi-challenge/id6756227034)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


### Shadow Me

[App page](https://appshunter.io/ios/app/shadow-me/id6776381499)

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

**In-app purchases:** none


## Frequently asked questions

### Is π Pi Challenge free?

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

### Is Shadow Me free?

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

### Do π Pi Challenge or Shadow Me have ads?

π Pi Challenge shows ads; Shadow Me does not.

### Which is updated more often, π Pi Challenge or Shadow Me?

π Pi Challenge ships an update every 2 months, and Shadow Me daily. Most recently, π Pi Challenge was updated on October 5, 2026 and Shadow Me on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*