Comparison

Strongbox Zero vs MarkTask

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

Head to head
About

Strongbox Zero

This app securely stores and protects your passwords with a master password. It supports open-source formats and offers advanced security features like biometric unlock and hardware token protection. It's designed for users who prefer a local-only password management solution.

Highlights
  • Local-only password storage
  • Biometric and PIN unlock
  • YubiKey hardware token protection
  • Military-grade cryptography
  • Password auditing for weak passwords
  • Secure document attachment viewer
  • Import/Export via Files app and Email
Features
Read full description

Strongbox Zero is a version of the well known and loved Strongbox with all of the networking code and as many third party libraries stripped out as we could! Think of it as the Drag Racer version of Strongbox! If you're a fan of Local Only password managers this could be the right choice for you. We recommend you get to know (and love!) the regular Strongbox first through the Freemium app. Once you're happy and sure you want to go local only, go for Strongbox Zero... Strongbox Zero is an application for keeping all your passwords safely stored and protected by one master password. Supporting the open source Password Safe and KeePass formats. *** Features *** - Face ID/Touch ID Unlock for the ultimate in convenience, security and speed. - PIN Code Unlock with a Duress PIN option for those tricky situations. - YubiKey protection - secure your databases with a hardware token. - Secure - protected by time tested military grade cryptography. - Private - Isolated In-App attachments viewer for your sensitive documents, photos & videos. - Audit your passwords - Automatically check your database for weak passwords - Search your entire set of passwords and secrets instantly and powerfully, with deep search. Autocomplete new entries, and auto generate secure passwords. - Compatible - Import/Export by Files app, Email, CSV, iTunes File Sharing - Standards compliant - using the time tested Password Safe and KeePass formats so you can import any existing password safe you have. - Features galore - Incredibly configurable password generation including Diceware (XKCD) & regular passwords. - Timed Auto Clear Clipboard. - Entry History. - KeePass Field References, Tags & Custom Icons. - Two Factor Authentication codes (TOTP) - QR Code, Steam & Manual. --------------------------------------------------------------------- • Payment will be charged to iTunes Account at confirmation of purchase • Strongbox Privacy Policy may be found here: https://strongboxsafe.com/privacy-policy/ • Strongbox Terms of Use may be found here: https://strongboxsafe.com/terms/

About

MarkTask

Features
Read full description

MarkTask is a convenient app that allows you to easily create task lists using Markdown files and utilize them like an advanced task management app. Not only can you mark tasks as complete within the app, but you can also use external AI tools to automatically generate Markdown files and manage those files effortlessly. Manage up to 7 Markdown files simultaneously, and set notifications and icon badges for each one to ensure you never miss an important task. Real-time sync: The Markdown files and the app synchronize in both directions. Any updates made in either will be reflected automatically. Notification feature: Set reminders for tasks so that you never miss an important deadline. Icon badges: Track progress directly on the app icon, ensuring you don’t overlook any incomplete tasks. AI Integration: Use external AI tools to easily generate Markdown files, then manage them seamlessly within the app. Start organizing your tasks in a simple yet efficient way with MarkdownTodo, the new standard in task management!

Screenshots

Strongbox Zero4 screens
MarkTask4 screens

Verdict

The call

The clearest difference is price: MarkTask at $1.99 against Strongbox Zero's $99.99. Strongbox Zero's advantage is update cadence (every 2 weeks vs every 17 months) and device support (5 vs 3). On ads, in-app purchases and iOS requirement 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

Strongbox Zero costs $99.99 and MarkTask $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Strongbox Zero ships an update every 2 weeks, MarkTask every 17 months. The most recent releases landed on September 22, 2026 and September 15, 2026 respectively.

Scorecard3 real differences · 7 level
Strongbox Zero versus MarkTask: the parameters behind the verdict, then further details
ParameterStrongbox ZeroMarkTask
Price$99.99$1.99 — better
Rating4.3 (21 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 2 weeks — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size96 MB32 MB
Age rating4+4+
DeveloperPhoebe Code Limitedshota komatsu

In-app purchases

None

Strongbox Zero

No in-app purchases

None

MarkTask

No in-app purchases

Questions

Is Strongbox Zero free?
Strongbox Zero costs $99.99, with no in-app purchases.
Is MarkTask free?
MarkTask costs $1.99, with no in-app purchases.
Do Strongbox Zero or MarkTask have ads?
Neither Strongbox Zero nor MarkTask shows ads.
Which is updated more often, Strongbox Zero or MarkTask?
Strongbox Zero ships an update every 2 weeks, and MarkTask every 17 months. Most recently, Strongbox Zero was updated on September 22, 2026 and MarkTask on September 15, 2026.

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