# Moon Atlas vs Z80 Reference

The clearest difference is price: Z80 Reference at Free against Moon Atlas's $5.99. Z80 Reference also leads on rating (5.0 vs 4.0) and update cadence (every 3 days vs every 3 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Z80 Reference is free to download; Moon Atlas costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Z80 Reference holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 72% of Moon Atlas's written reviews are positive against 100% of Z80 Reference's.

Moon Atlas ships an update every 3 months, Z80 Reference every 3 days. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Moon Atlas | Z80 Reference |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/moon-atlas/id302171459/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/z80-reference/id1453302679/reviews)** |
| Number of ratings | **6** | 3 |
| Positive reviews | 72.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 740 MB | 10 MB |
| Requires iOS | 17.6 | **12.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Julian James](https://appshunter.io/developer/293642870) | [Sgc Marketing Ltd](https://appshunter.io/developer/959409647) |

## What reviewers say

### Moon Atlas

[App page](https://appshunter.io/ios/app/moon-atlas/id302171459)

Explore a detailed 3D model of the Moon with interactive controls. Discover named features, spacecraft landing sites, and real-time lunar phase and libration data. Customize your view for different observational needs.

**Highlights:** Interactive 3D Moon globe, Feature identification and search, Real-time Moon phase and libration, Customizable globe orientation, Spacecraft landing site information, Detailed feature database

**Features:** Vision Pro support

**In-app purchases:** none


### Z80 Reference

[App page](https://appshunter.io/ios/app/z80-reference/id1453302679)

Access a comprehensive Zilog Z80 opcode reference with a user-friendly interface. View detailed command overviews, categorized and color-coded, with fully documented sample code for each opcode. Designed for ease of use and visual appeal, it's an ideal companion for Z80 programming.

**Highlights:** Complete Z80 opcode list, Color-coded by category, Detailed command overview, Fully documented sample code, Easy-to-use interface, Elegant design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Moon Atlas free?

Moon Atlas costs $5.99, with no in-app purchases.

### Is Z80 Reference free?

Z80 Reference is free to download, with no in-app purchases.

### Which has better reviews, Moon Atlas or Z80 Reference?

Z80 Reference is rated higher. Moon Atlas averages 4.0 out of 5 from 6 ratings, while Z80 Reference averages 5.0 from 3 ratings.

### Do Moon Atlas or Z80 Reference have ads?

Neither Moon Atlas nor Z80 Reference shows ads.

### Which is updated more often, Moon Atlas or Z80 Reference?

Moon Atlas ships an update every 3 months, and Z80 Reference every 3 days. Most recently, Moon Atlas was updated on October 23, 2026 and Z80 Reference on October 22, 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.*