# Stars Units Sizes Objects vs MapSize

The clearest difference is ads: MapSize at none against Stars Units Sizes Objects's shown. MapSize also leads on rating (4.5 vs 4.2) and update cadence (every 5 weeks vs every 4 months). Stars Units Sizes Objects's advantage is iOS requirement (11.0 vs 15.0). On price, 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.

MapSize holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: MapSize has 32 ratings behind it against 5, so its average is the more settled of the two.

Stars Units Sizes Objects ships an update every 4 months, MapSize every 5 weeks. The most recent releases landed on September 7, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Stars Units Sizes Objects | MapSize |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571/reviews) | **[4.5 (32 ratings)](https://appshunter.io/ios/app/mapsize/id6504443912/reviews)** |
| Number of ratings | 5 | **32** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 124 MB | 57 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mudarmeen Munlin](https://appshunter.io/developer/1348165664) | [Jason Horsley](https://appshunter.io/developer/1752306777) |

## What reviewers say

### Stars Units Sizes Objects

[App page](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571)

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

**Highlights:** Compare object sizes, View object images, Pinch/Zoom and Pan images, Unit conversion for distances, Explore scales from Planck length to observable universe, Learn about stars and galaxies

**Features:** macOS Compatibility

**In-app purchases:** none


### MapSize

[App page](https://appshunter.io/ios/app/mapsize/id6504443912)

Explore the true sizes of countries, overcoming the distortions of traditional map projections. Compare any two territories side-by-side, move them freely, and discover fascinating statistical data about their relative dimensions. An ideal educational resource for geography enthusiasts.

**Highlights:** Accurate size comparison, Overcomes map projection distortion, Compare any two territories, Interactive territory movement, Learn relative size statistics, Educational geography tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stars Units Sizes Objects free?

Stars Units Sizes Objects is free to download, with no in-app purchases.

### Is MapSize free?

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

### Which has better reviews, Stars Units Sizes Objects or MapSize?

MapSize is rated higher. Stars Units Sizes Objects averages 4.2 out of 5 from 5 ratings, while MapSize averages 4.5 from 32 ratings.

### Do Stars Units Sizes Objects or MapSize have ads?

Stars Units Sizes Objects shows ads; MapSize does not.

### Which is updated more often, Stars Units Sizes Objects or MapSize?

Stars Units Sizes Objects ships an update every 4 months, and MapSize every 5 weeks. Most recently, Stars Units Sizes Objects was updated on September 7, 2026 and MapSize on September 13, 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.*