# Net Zero Challenge vs PanPan

The clearest difference is update cadence: PanPan at every 2 weeks against Net Zero Challenge's every 2 months. PanPan also leads on iOS requirement (13.4 vs 15.1). 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.

Net Zero Challenge ships an update every 2 months, PanPan every 2 weeks. The most recent releases landed on October 15, 2026 and May 28, 2026 respectively.

## The numbers

| Metric | Net Zero Challenge | PanPan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 66 MB | 39 MB |
| Requires iOS | 15.1 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Green Rewards Ltd](https://appshunter.io/developer/909021443) | [Pandu Solutions LTD](https://appshunter.io/developer/1611176746) |

## What reviewers say

### Net Zero Challenge

[App page](https://appshunter.io/ios/app/net-zero-challenge/id1541830052)

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

**In-app purchases:** none


### PanPan

[App page](https://appshunter.io/ios/app/panpan/id1611176744)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Net Zero Challenge free?

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

### Is PanPan free?

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

### Do Net Zero Challenge or PanPan have ads?

Neither Net Zero Challenge nor PanPan shows ads.

### Which is updated more often, Net Zero Challenge or PanPan?

Net Zero Challenge ships an update every 2 months, and PanPan every 2 weeks. Most recently, Net Zero Challenge was updated on October 15, 2026 and PanPan on May 28, 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.*