# Universe Size Comparison vs Pocket Planets

The clearest difference is price: Pocket Planets at Free against Universe Size Comparison's $1.99. Pocket Planets also leads on rating (4.6 vs 3.2) and update cadence (every 3 weeks vs every 3 months). Universe Size Comparison's advantage is ads (none vs shown). On review sentiment, ratings volume, in-app purchases and device support there is nothing between them.

Pocket Planets is free to download; Universe Size Comparison costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pocket Planets holds the better App Store score, 4.6 against 3.2. Both are backed by a comparable volume of ratings — 30 and 22 respectively. Written reviews complicate that: 70% of Universe Size Comparison's written reviews are positive against 67% of Pocket Planets's, so the app with the better star average is not the one people write more warmly about.

Universe Size Comparison ships an update every 3 months, Pocket Planets every 3 weeks. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Universe Size Comparison | Pocket Planets |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.2 (30 ratings)](https://appshunter.io/ios/app/universe-size-comparison/id1473946290/reviews) | **[4.6 (22 ratings)](https://appshunter.io/ios/app/pocket-planets/id1496547610/reviews)** |
| Number of ratings | **30** | 22 |
| Positive reviews | **70.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Ad-supported** |
| Size | 411 MB | 66 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Daniele Citi](https://appshunter.io/developer/1187632258) | [Ad Lunam Kereskedelmi es Szolgaltato Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/1496547609) |

## 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


### Pocket Planets

[App page](https://appshunter.io/ios/app/pocket-planets/id1496547610)

Explore our solar system with detailed information on planets, moons, and astronauts. Track who is currently in space and receive notifications for new launches. Access NASA images and compare celestial body characteristics.

**Highlights:** Detailed planet and moon data, Astronaut information and missions, Real-time space occupancy, Launch notifications, NASA image gallery, Celestial body comparisons

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

**In-app purchases:** none


## Frequently asked questions

### Is Universe Size Comparison free?

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

### Is Pocket Planets free?

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

### Which has better reviews, Universe Size Comparison or Pocket Planets?

Pocket Planets is rated higher. Universe Size Comparison averages 3.2 out of 5 from 30 ratings, while Pocket Planets averages 4.6 from 22 ratings.

### Do Universe Size Comparison or Pocket Planets have ads?

Pocket Planets shows ads; Universe Size Comparison does not.

### Which is updated more often, Universe Size Comparison or Pocket Planets?

Universe Size Comparison ships an update every 3 months, and Pocket Planets every 3 weeks. Most recently, Universe Size Comparison was updated on November 3, 2026 and Pocket Planets on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*