# Deep Space Science vs Orbit 33

The clearest difference is iOS requirement: Deep Space Science at 13.0 against Orbit 33's 17.6. 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.

## The numbers

| Metric | Deep Space Science | Orbit 33 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | — | Free |
| Size | 22 MB | 4 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [WingYeung Ma](https://appshunter.io/developer/1790034550) | [kassem ali](https://appshunter.io/developer/1811205129) |

## What reviewers say

### Deep Space Science

[App page](https://appshunter.io/ios/app/deep-space-science/id6758235431)

**Features:** macOS Compatibility

**In-app purchases:** none


### Orbit 33

[App page](https://appshunter.io/ios/app/orbit-33/id6759526014)

This app visualizes the 33-year lunar and Gregorian calendar relationship. It offers an intelligent and interactive way to understand time, astronomy, and cultural identity.

**Highlights:** Lunar and Gregorian calendar relationship visualization, Interactive time and astronomy understanding, Elegant and intelligent user experience, Inspired by classic Hijri cycle visualizations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Deep Space Science free?

Deep Space Science is free to download, with no in-app purchases.

### Is Orbit 33 free?

Orbit 33 is free to download, with no in-app purchases.

### Do Deep Space Science or Orbit 33 have ads?

Neither Deep Space Science nor Orbit 33 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.*