# ゼロハザ vs SolarDays

The clearest difference is device support: SolarDays at 3 against ゼロハザ's 1. SolarDays also leads on iOS requirement (15.0 vs 17.0). On price, ads 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.

## The numbers

| Metric | ゼロハザ | SolarDays |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 12 MB | 25 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [kazuki hayashi](https://appshunter.io/developer/6792493853) | [kotobaz](https://appshunter.io/developer/1634727152) |

## What reviewers say

### ゼロハザ

[App page](https://appshunter.io/ios/app/id6806598157)

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

**In-app purchases:** none


### SolarDays

[App page](https://appshunter.io/ios/app/solardays/id6811397065)

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

**In-app purchases:** none


## Frequently asked questions

### Is ゼロハザ free?

ゼロハザ is free to download, with no in-app purchases.

### Is SolarDays free?

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

### Do ゼロハザ or SolarDays have ads?

Neither ゼロハザ nor SolarDays shows ads.

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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.*