# KSI BT Net vs ServerDoor

The clearest difference is in-app purchases: KSI BT Net at none against ServerDoor's 1. KSI BT Net also leads on device support (3 vs 1) and iOS requirement (9.3 vs 16.2). On price, update cadence and ads there is nothing between them.

Both are free to download. ServerDoor sells 1 one-off in-app purchase. KSI BT Net asks for nothing beyond the download.

KSI BT Net ships an update fortnightly, ServerDoor every 8 days. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | KSI BT Net | ServerDoor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Size | 2 MB | 4 MB |
| Requires iOS | **9.3** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Key Systems, Inc.](https://appshunter.io/developer/935715907) | [Oleg Gutlyanskiy](https://appshunter.io/developer/1589765620) |

## What reviewers say

### KSI BT Net

[App page](https://appshunter.io/ios/app/ksi-bt-net/id1448755195)

**Features:** macOS Compatibility

**In-app purchases:** none


### ServerDoor

[App page](https://appshunter.io/ios/app/serverdoor-ssh-client/id6474432962)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features | $4.99 | one-time |


## Frequently asked questions

### Is KSI BT Net free?

KSI BT Net is free to download, with no in-app purchases.

### Is ServerDoor free?

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

### Do KSI BT Net or ServerDoor have ads?

Neither KSI BT Net nor ServerDoor shows ads.

### Which is updated more often, KSI BT Net or ServerDoor?

KSI BT Net ships an update fortnightly, and ServerDoor every 8 days. Most recently, KSI BT Net was updated on October 26, 2026 and ServerDoor on October 9, 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.*