# ZDL vs ServerDoor

The clearest difference is in-app purchases: ZDL at none against ServerDoor's 1. ZDL also leads on iOS requirement (14.0 vs 16.2). ServerDoor's advantage is update cadence (every 8 days vs every 4 months). On price, ads and device support there is nothing between them.

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

ZDL ships an update every 4 months, ServerDoor every 8 days. The most recent releases landed on June 1, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | ZDL | ServerDoor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zdl/id1415744847/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 23 MB | 4 MB |
| Requires iOS | **14.0** | 16.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Blackwired Pte Ltd.](https://appshunter.io/developer/1642378647) | [Oleg Gutlyanskiy](https://appshunter.io/developer/1589765620) |

## What reviewers say

### ZDL

[App page](https://appshunter.io/ios/app/zdl/id1415744847)

This platform offers real-time cyber-attack prevention by providing a unique view of adversary preparations. It aims to proactively safeguard enterprises from cyber threats before they occur.

**Highlights:** Proactive cyber-attack prevention, Real-time adversary monitoring, Global cyber observatory, Enterprise-level cyber-warfare capability, Performance updates and bug fixes

**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 ZDL free?

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

### Is ServerDoor free?

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

### Do ZDL or ServerDoor have ads?

Neither ZDL nor ServerDoor shows ads.

### Which is updated more often, ZDL or ServerDoor?

ZDL ships an update every 4 months, and ServerDoor every 8 days. Most recently, ZDL was updated on June 1, 2026 and ServerDoor on August 15, 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.*