Comparison

Krypton vs DOM Update

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

Head to head
About

Krypton

Securely encrypt and protect your personal documents and folders with strong encryption. This app acts like a digital vault, keeping your sensitive files safe from unauthorized access on your devices and cloud storage.

Highlights
  • Strong encryption for documents and folders
  • Acts as a secure digital vault
  • Supports various file types (pictures, movies, PDFs, etc.)
  • Cloud synchronization with iCloud Drive and Dropbox
  • Available on iOS and macOS
Features
Read full description

Protecting your personal and confidential information since 2009, Krypton is the first, simplest and most reliable App on the iOS Store to strongly encrypt entire documents and folders. Now also available on the macOS App Store. Your stuff is secure from prying eyes no matter where you are in the world. Metaphorically, Krypton keeps your encrypted items in a special vault, with each item contained in their own deposit box; to gain access to an encrypted item the vault must be open and the passcode key must be used to unlock the deposit box before you can discern the plaintext contents inside. In iOS the vault may be open or closed, while on macOS the vault opens upon Log In. Because the unit of encryption is an entire document or folder, Krypton is not a password manager in the traditional sense, although you can maintain a document of all your passwords that you encrypt between uses. Krypton can encrypt any type of document, including but not limited to: • Pictures and movies from your photo album. • Email messages from your mailbox. • Songs, PDFs, movies, Zip files, word processing documents, text files, images, program source code or any other object that you can download over the network or from your personal web server. • Anything on the iOS pasteboard. • Any document other Apps are willing to Share, such as Pages, Numbers and Keynote. • iCloud Drive and Dropbox files for easy cloud synchronization. Krypton uses strong encryption on each item. This has several ramifications: • If your passcode is strong enough to withstand a brute force attack, no one is going to see your stuff. • If you forget your passcode, no one can recover your stuff for you! But only that one document is lost, not your entire collection of items. • Your stuff is secure even if your iDevice or Mac is stolen, or iCloud Drive or Dropbox account is compromised. Visit http://www.bigcatos.com to learn more.

About

DOM Update

Features
Read full description

The DOM Update is an offline and online application that can be used to read out device data, such as firmware version and battery status, of all electronic DOM ENiQ locking devices from version v3.7 onwards. In addition, firmware updates of these electronic locking devices can be carried out via Bluetooth Low Energy, e.g. to install security patches etc.

Screenshots

Krypton4 screens
DOM Update4 screens

Verdict

The call

The clearest difference is price: DOM Update at Free against Krypton's $2.99. DOM Update also leads on update cadence (every 3 months vs every 10 months). Krypton's advantage is device support (4 vs 2). 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

DOM Update is free to download; Krypton costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Krypton ships an update every 10 months, DOM Update every 3 months. The most recent releases landed on September 22, 2026 and September 15, 2026 respectively.

Scorecard3 real differences · 6 level
Krypton versus DOM Update: the parameters behind the verdict, then further details
ParameterKryptonDOM Update
Price$2.99Free — better
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 10 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size110 MB53 MB
Age rating4+4+
DeveloperSteve LidieDOM Sicherheitstechnik GmbH & Co. KG

In-app purchases

None

Krypton

No in-app purchases

None

DOM Update

No in-app purchases

Questions

Is Krypton free?
Krypton costs $2.99, with no in-app purchases.
Is DOM Update free?
DOM Update is free to download, with no in-app purchases.
Do Krypton or DOM Update have ads?
Neither Krypton nor DOM Update shows ads.
Which is updated more often, Krypton or DOM Update?
Krypton ships an update every 10 months, and DOM Update every 3 months. Most recently, Krypton was updated on September 22, 2026 and DOM Update on September 15, 2026.

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