# Sunlight Hours vs Solar System Clock

The clearest difference is in-app purchases: Solar System Clock at none against Sunlight Hours's 7. Solar System Clock also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Sunlight Hours sells 7 one-off in-app purchases. Solar System Clock asks for nothing beyond the download.

Sunlight Hours ships an update every 3 days, Solar System Clock every 2 days. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Sunlight Hours | Solar System Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 44 MB | 5 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [NovaNext](https://appshunter.io/developer/1285557502) | [Mateusz Andrzejczuk](https://appshunter.io/developer/1158375886) |

## What reviewers say

### Sunlight Hours

[App page](https://appshunter.io/ios/app/sunlight-hours/id6499107039)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Donate $3 | $2.99 | one-time |
| Donate $5 | $4.99 | one-time |
| Donate $10 | $9.99 | one-time |
| Donate $15 | $14.99 | one-time |
| Donate $20 | $19.99 | one-time |


### Solar System Clock

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunlight Hours free?

Sunlight Hours is free to download, with in-app purchases available.

### Is Solar System Clock free?

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

### Do Sunlight Hours or Solar System Clock have ads?

Sunlight Hours shows ads; Solar System Clock does not.

### Which is updated more often, Sunlight Hours or Solar System Clock?

Sunlight Hours ships an update every 3 days, and Solar System Clock every 2 days. Most recently, Sunlight Hours was updated on October 17, 2026 and Solar System Clock on October 9, 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.*