Comparison

ZDL vs ServerDoor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ZDL

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
Read full description

Blackwired defines a new approach to Threat Intelligence. The flagship Zero Day Live platform is designed to proactively prevent cyber-attacks before they happen. It is the first and only platform delivering cyber-warfare capability accessible to enterprise. The largest cyber observatory in the world with a unique lens on adversaries and their preparations to attack. Zero Day Live’s real time, measurable cyber-attack prevention takes your enterprise out of the victim pool. The team at Blackwired continues to make performance updates, bug fixes and feature rich options to enhance the user experience. Happy hunting.

About

ServerDoor

Features
Read full description

ServerDoor allows you to use your smartphone like a secure door for remote access to your personal server. A user-friendly session manager with a simple and intuitive interface, a full-featured terminal emulator that supports gesture control, as well as a tool for working with SSH keys - now all those thing can be placed in your pocket. Connect to your servers with using telnet and ssh protocols to administrate them in any situation anytime. Main advantages and functions: -The tool for working with SSH keys allows you to generate them, as well as to import and export them. RSA, DSA, EC, ED25519 keys are supported, and the openssh-key-v1 format is used to store them. -Thanks to the built-in password manager, you do not have to keep in mind the passwords for each server and key. The password database is stored on the device and encrypted with AES256-CBC using the master key. You can manage the password manager or disable it altogether in the settings. -Snippets system will be useful for advanced shell admins and can be used for make scripts those you can call from terminal session anytime. -Export and import app data features allows you exchange data between different devices or make backups anytime. -Convenient gesture control makes it possible to change the font size in the terminal by simply stretching instead of constantly switching to settings, and sticky scrolling allows you to quickly navigate even in the most voluminous sessions. • Advanced terminal emulator, supports most ESC sequences, SGR and utf8 encoding. • Additional keyboard and hot buttons, allow you to use most commands and keyboard shortcuts, as well as emulate mouse clicks in terminal applications. -Supports simultaneous operation of an unlimited number of running sessions, including in the background, when the application is minimized. -The ability to manually set a limit on the number of lines stored for each session (or disable the limit altogether), allows you to flexibly configure the device's memory consumption by running sessions. Whether you want to store the whole session or set a hard limit to save memory is up to you. -To save memory, session data is compressed and stored in a fragmented way, which allows you to turn off the limit and store even the most voluminous sessions without large buffer allocation errors. Tired of Telnet clients cutting HTTP responses without even allowing you to view the header? Then this app is for you!

Screenshots

ZDL4 screens
ServerDoor4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
ZDL versus ServerDoor: the parameters behind the verdict, then further details
ParameterZDLServerDoor
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better16.2
Further details — not scored
Size23 MB4 MB
Age rating4+4+
DeveloperBlackwired Pte Ltd.Oleg Gutlyanskiy

In-app purchases

None

ZDL

No in-app purchases

1 purchases

ServerDoor

One-time1
  • Premium features$4.99

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.

Other comparisons