Secret Delivery vs Disk Decipher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Secret Delivery
Securely send private messages, photos, and documents with password-protected encryption. Share files through various platforms, ensuring your sensitive information remains confidential. Recipients need the app to decrypt and access content.
- Encrypted text and file sharing
- Password protection for messages and files
- AES encryption standard
- Encrypt/decrypt files outside the app
- Intuitive user interface
- Unlimited messages and file attachments
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Secret Delivery encrypts your files and text so only the people you choose can read them. No accounts. No servers. No tracking. Your password never leaves your device — and neither does your data. FREE TO START • Encrypt and decrypt text messages — free, forever. • Share encrypted text as a secretdelivery:// link, or copy and paste the ciphertext anywhere. PRO UNLOCK (one-time purchase) • Encrypt and decrypt files of any type. • Quick Look previews of .sdenc files right inside Files and Finder. • Import from Camera and Photos, and save to iCloud Drive. • Face ID / Touch ID lock and configurable autolock. • Run encrypt and decrypt from Shortcuts, Siri, and Spotlight — or with a long-press in Files. STRONGER ENCRYPTION • New files use AES-256-GCM with PBKDF2-HMAC-SHA256 key strengthening (600,000 iterations), a random salt and nonce per file, and an authentication tag that detects tampering. • Your existing encrypted files still open — Secret Delivery detects the format automatically. Need to send a file to someone on an older version? Turn on Legacy Mode for the session, or upgrade old files in place. PRIVATE BY DESIGN • Everything happens on-device. We collect nothing, and there is no analytics SDK. • The app blurs its contents in the app switcher and wipes temporary decrypted files when it moves to the background. EXISTING CUSTOMERS Already bought Secret Delivery? Thank you — everything stays unlocked at no extra cost. Just open the app on your Apple ID and Pro is restored automatically.
Disk Decipher
Access and manage encrypted virtual disk images directly on your iPhone and iPad. Supports a wide range of encryption formats and file systems, offering secure viewing and playback of your data anywhere.
- Access encrypted virtual disks
- Supports VeraCrypt, TrueCrypt, LUKS, DMG
- Native file system handling
- Secure authentication options
- File Provider integration
- Media playback
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Access encrypted virtual disks on iPhone & iPad. Open VeraCrypt, TrueCrypt, LUKS, DMG, ProxyCrypt and more—securely, anywhere. Disk Decipher supports many advanced features. Full compatibility details and documentation are available on the support site: https://disk-decipher.app. Highlights: - Freedom of storage - Keep your disk images on your device, on an external disk or NAS, or in the cloud - Broad disk‑image compatibility – VeraCrypt, TrueCrypt, LUKS, DMG, Apple sparse image/bundle, ProxyCrypt - Native file‑system handling – FAT, exFAT, NTFS, HFS, APFS, Linux ext (*) - Rich viewer & media playback – Work securely with your files within the app, or use the File Provider integration across apps - Secure authentication options – Password, passcode, Touch ID, Face ID; Keyfiles, smart-card and FIDO2 security key. (*) exFAT and write support for HFS, APFS and NTFS are offered as optional in-app purchases to cover patent and licensing royalties.
Screenshots
Verdict
The clearest difference is rating: Disk Decipher at 4.6 against Secret Delivery's 3.7. Disk Decipher also leads on update cadence (weekly vs every 9 months) and ratings volume (93 vs 3). On price, review sentiment, ads and in-app purchases 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
Secret Delivery costs $0.99 and Disk Decipher $0.99 up front. Secret Delivery sells 1 one-off in-app purchase and Disk Decipher sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Disk Decipher holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Disk Decipher has 93 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 71% and 72% positive.
Secret Delivery ships an update every 9 months, Disk Decipher weekly. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.
| Parameter | Secret Delivery | Disk Decipher |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 3.7 (3 ratings) | 4.6 (93 ratings) — better |
| Positive reviews | 71.4% of reviews | 72.4% of reviews — better |
| Number of ratings | 3 | 93 — better |
| Update frequency | Every 9 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | — | #115 — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Tractus | Richard Huveneers |
Customer experience
Secret Delivery
Disk Decipher
Bugs and requests
Secret Delivery
Not enough reviews yet to summarise bugs or requests.
Disk Decipher
Reported bugs
3 issues- Issues with mounting/opening encrypted containers
- Problems with file deletion or management within containers
- Incompatibility with certain VeraCrypt/TrueCrypt features
Requested features
4 requests- Add support for editing/modifying files within encrypted containers
- Improve Dropbox/cloud integration and usability
- Expand support for additional file systems (e.g. APFS, ext4)
- Implement dark mode or other UI improvements
In-app purchases
Secret Delivery
- Secret Delivery Pro$0.99
Disk Decipher
- Small Donation$0.99
- Medium Donation$1.99
- exFAT filesystem support$2.99
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- APFS write license$2.99
- NTFS write license$2.99
- HFS write license$2.99
- Large Donation$3.99
- All filesystem licenses$7.49
Questions
Is Secret Delivery free?
Is Disk Decipher free?
Which has better reviews, Secret Delivery or Disk Decipher?
Do Secret Delivery or Disk Decipher have ads?
Which is updated more often, Secret Delivery or Disk Decipher?
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