# BBStelnet vs Zelmux

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

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

BBStelnet ships an update every 9 days, Zelmux every 3 weeks. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BBStelnet | Zelmux |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 12 MB | 6 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Hsu Chia-cheng](https://appshunter.io/developer/1618067024) | [Yang Zhang](https://appshunter.io/developer/1005259025) |

## What reviewers say

### 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 |


### Zelmux

[App page](https://appshunter.io/ios/app/zelmux/id6768126927)

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

**In-app purchases:** none


## Frequently asked questions

### Is BBStelnet free?

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

### Is Zelmux free?

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

### Do BBStelnet or Zelmux have ads?

BBStelnet shows ads; Zelmux does not.

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

BBStelnet ships an update every 9 days, and Zelmux every 3 weeks. Most recently, BBStelnet was updated on October 9, 2026 and Zelmux on October 8, 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.*