# Z80CPM vs Disk Reserve

The clearest difference is in-app purchases: Z80CPM at none against Disk Reserve's 1. Z80CPM also leads on iOS requirement (15.0 vs 17.0). Disk Reserve's advantage is update cadence (daily vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Disk Reserve sells 1 one-off in-app purchase. Z80CPM asks for nothing beyond the download.

Z80CPM ships an update every 10 days, Disk Reserve daily. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Z80CPM | Disk Reserve |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/z80cpm/id6756590871/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Free | — |
| Size | 1 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Aaron Wohl](https://appshunter.io/developer/1860336063) | [芮 赵](https://appshunter.io/developer/1824015990) |

## What reviewers say

### Z80CPM

[App page](https://appshunter.io/ios/app/z80cpm/id6756590871)

Experience the classic CP/M operating system on your iOS or Mac device with a full Z80 processor emulator. Run authentic CP/M software, including operating systems, word processors, programming languages, and text adventures. Works offline with support for multiple disk images.

**Highlights:** Full Z80 emulation, VT100 terminal support, Multiple disk image mounting, Offline functionality, Native Mac support, Downloadable CP/M disk images

**Features:** Vision Pro support

**In-app purchases:** none


### Disk Reserve

[App page](https://appshunter.io/ios/app/disk-reserve/id6805145784)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $0.99 | one-time |


## Frequently asked questions

### Is Z80CPM free?

Z80CPM is free to download, with no in-app purchases.

### Is Disk Reserve free?

Disk Reserve is free to download, with in-app purchases available.

### Do Z80CPM or Disk Reserve have ads?

Neither Z80CPM nor Disk Reserve shows ads.

### Which is updated more often, Z80CPM or Disk Reserve?

Z80CPM ships an update every 10 days, and Disk Reserve daily. Most recently, Z80CPM was updated on October 5, 2026 and Disk Reserve on October 11, 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.*