# Solar Explorer 3D vs Notes

The clearest difference is in-app purchases: Notes at none against Solar Explorer 3D's 1. Notes also leads on update cadence (every 5 days vs every 2 weeks). Solar Explorer 3D's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Solar Explorer 3D sells 1 one-off in-app purchase. Notes asks for nothing beyond the download.

Solar Explorer 3D ships an update every 2 weeks, Notes every 5 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Solar Explorer 3D | Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (24 ratings)](https://appshunter.io/ios/app/solar-explorer-3d/id6752232739/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 833 MB | 146 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Qizhuan Technology Co., Ltd.](https://appshunter.io/developer/1838373818) | [磊 石](https://appshunter.io/developer/1876309061) |

## What reviewers say

### Solar Explorer 3D

[App page](https://appshunter.io/ios/app/solar-explorer-3d/id6752232739)

Explore the cosmos with a realistic 3D simulation of the Solar System. Witness celestial bodies, spacecraft, and their movements with detailed surface views and mission replays. Ideal for astronomy enthusiasts and educators.

**Highlights:** Realistic 3D Solar System simulation, Detailed celestial body and spacecraft models, Surface exploration and landing views, Time acceleration for observing motion, Mission replay functionality, Real-time astronomical data display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Edition | $3.99 | one-time |


### Notes

[App page](https://appshunter.io/ios/app/notesread-and-recall/id6759288451)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Explorer 3D free?

Solar Explorer 3D is free to download, with in-app purchases available.

### Is Notes free?

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

### Do Solar Explorer 3D or Notes have ads?

Neither Solar Explorer 3D nor Notes shows ads.

### Which is updated more often, Solar Explorer 3D or Notes?

Solar Explorer 3D ships an update every 2 weeks, and Notes every 5 days. Most recently, Solar Explorer 3D was updated on October 12, 2026 and Notes on October 7, 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.*