# Solar System Clock vs Paper Fold

The clearest difference is ads: Solar System Clock at none against Paper Fold's shown. Solar System Clock also leads on update cadence (every 2 days vs every 4 weeks) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

Solar System Clock ships an update every 2 days, Paper Fold every 4 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Solar System Clock | Paper Fold |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/solar-system-clock/id6746730661/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 4 weeks |
| Size | 5 MB | 25 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mateusz Andrzejczuk](https://appshunter.io/developer/1158375886) | [Ha Bui Thi Minh](https://appshunter.io/developer/6773002182) |

## What reviewers say

### Solar System Clock

[App page](https://appshunter.io/ios/app/solar-system-clock/id6746730661)

**Features:** macOS Compatibility

**In-app purchases:** none


### Paper Fold

[App page](https://appshunter.io/ios/app/paper-fold-learn-and-craft/id6803604433)

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

**In-app purchases:** none


## Frequently asked questions

### Is Solar System Clock free?

Solar System Clock is free to download, with no in-app purchases.

### Is Paper Fold free?

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

### Do Solar System Clock or Paper Fold have ads?

Paper Fold shows ads; Solar System Clock does not.

### Which is updated more often, Solar System Clock or Paper Fold?

Solar System Clock ships an update every 2 days, and Paper Fold every 4 weeks. Most recently, Solar System Clock was updated on October 25, 2026 and Paper Fold 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.*