Krypton vs DOM Update
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
DOM Update
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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
Verdict
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
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.
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.
| Parameter | Krypton | DOM Update |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 110 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Lidie | DOM Sicherheitstechnik GmbH & Co. KG |
In-app purchases
Krypton
No in-app purchases
DOM Update
No in-app purchases









