# Universe Size Comparison vs Orbit Map

The clearest difference is price: Orbit Map at Free against Universe Size Comparison's $1.99. Orbit Map also leads on device support (5 vs 3). Universe Size Comparison's advantage is in-app purchases (none vs 3). On ads and iOS requirement there is nothing between them.

Orbit Map is free to download; Universe Size Comparison costs $1.99 up front. Orbit Map sells 3 in-app purchases, starting at $4.99 per month. Universe Size Comparison asks for nothing beyond the download.

## The numbers

| Metric | Universe Size Comparison | Orbit Map |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.2 (30 ratings)](https://appshunter.io/ios/app/universe-size-comparison/id1473946290/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 413 MB | 90 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad, Apple TV | **iPhone, iPad, Mac, Apple TV, Vision Pro** |
| Age rating | +4 | 4+ |
| Developer | [Daniele Citi](https://appshunter.io/developer/1187632258) | [Igor Bidenko](https://appshunter.io/developer/1824855550) |

## What reviewers say

### Universe Size Comparison

[App page](https://appshunter.io/ios/app/universe-size-comparison/id1473946290)

Explore the vastness of space and understand celestial body dimensions through interactive 3D comparisons. Discover the scale of planets and stars, from our Sun to hypergiant stars, with guided tours and free comparison modes.

**Highlights:** 3D astronomical comparisons, Tour Mode with guided explanations, Free Mode for custom comparisons, Scale comparisons of planets and stars, Detailed celestial body information, Elegant user interface

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

**In-app purchases:** none


### Orbit Map

[App page](https://appshunter.io/ios/app/orbit-map-satellite-tracker/id6804928043)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orbit Map - Monthly | $4.99 | per month |
| Orbit Map - Annual | $19.99 | per year |
| Orbit Map - Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Universe Size Comparison free?

Universe Size Comparison costs $1.99, with no in-app purchases.

### Is Orbit Map free?

Orbit Map is free to download, with in-app purchases available.

### Do Universe Size Comparison or Orbit Map have ads?

Neither Universe Size Comparison nor Orbit Map 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.*