# Z80CPM vs BBStelnet

The clearest difference is in-app purchases: Z80CPM at none against BBStelnet's 3. Z80CPM also leads on ads (none vs shown) and device support (4 vs 1). On price and update cadence there is nothing between them.

Both are free to download. BBStelnet sells 3 one-off in-app purchases. Z80CPM asks for nothing beyond the download.

Z80CPM ships an update every 10 days, BBStelnet every 9 days. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Z80CPM | BBStelnet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/z80cpm/id6756590871/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 9 days** |
| Monetization | Free | — |
| Size | 1 MB | 12 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Aaron Wohl](https://appshunter.io/developer/1860336063) | [Hsu Chia-cheng](https://appshunter.io/developer/1618067024) |

## 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


### BBStelnet

[App page](https://appshunter.io/ios/app/bbstelnet/id6766363420)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quick Key Cells +10 | $0.99 | one-time |
| Station Slots +5 | $0.99 | one-time |
| BBStelnet Pro | $9.99 | one-time |


## Frequently asked questions

### Is Z80CPM free?

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

### Is BBStelnet free?

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

### Do Z80CPM or BBStelnet have ads?

BBStelnet shows ads; Z80CPM does not.

### Which is updated more often, Z80CPM or BBStelnet?

Z80CPM ships an update every 10 days, and BBStelnet every 9 days. Most recently, Z80CPM was updated on September 18, 2026 and BBStelnet on September 23, 2026.

---

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