CryptoDuck vs Secret Notes
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
CryptoDuck
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CryptoDuck helps you and your friends create a secret language only insiders can read. Type a message, pick an encryption rule, and get ciphertext in one tap. Share it anywhere - only those who know the rule can decode it. Perfect for couples, close friends, and fun group chats. [Core Features] - Encrypt and decrypt text with custom rules - Build your own cipher: letters, numbers, emoji - mix freely - Rule management: create, edit, import, export, and share via Deep Link - Share as plain text, file, or beautiful ciphertext card (Pro: no watermark) - History: auto-save sessions with one-tap refill (Pro) - Rule Store: couple packs, emoji ciphers, gaming codes and more [System Extensions] - Home Screen Widget: see your active rule, jump straight to encrypt or decrypt - Shortcuts: encrypt or decrypt without opening the app, results copied to clipboard (Pro) - iCloud sync: keep rules across your devices (Pro) [Privacy First] - Plaintext, ciphertext, and rules stay on your device by default - No ads, no third-party analytics, no cross-app tracking - Optional iCloud sync is handled by Apple [Free vs Pro] Free: 3 manual rules, 12 total, 500 chars per encryption Pro: unlimited rules, no char limit, history, iCloud sync, watermark-free cards, Widget, Shortcuts and all paid rule packs [Important Notice] CryptoDuck uses custom character mapping - not AES or military-grade cryptography. Do not use for highly sensitive data. Ideal for fun secret messaging between people who share a rule. Download CryptoDuck and start your secret conversation. [Auto-Renewable Pro Subscription] 1. Subscription: Continuous (Monthly/Yearly) Pro Membership 2. Duration: One month or one year. Pro features are available during the active subscription period. 3. Price: Monthly and Yearly plans available (actual price shown on the App Store purchase sheet). 4. Payment: Charged to your Apple ID account upon confirmation of purchase. 5. Cancellation: To cancel auto-renewal, turn it off at least 24 hours before the current period ends in Settings > Apple ID > Subscriptions. Otherwise, the subscription renews automatically. 6. Renewal: Your Apple ID account will be charged within 24 hours before the period ends. Upon successful payment, the subscription extends for one more period (1 month or 1 year). 7. Privacy Policy: https://baitemi.com/jmy/privacy.html 8. Subscription Terms: https://baitemi.com/jmy/subscription.html
Secret Notes
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Trove is where your private thoughts live behind real encryption. Every note is locked with AES-256 โ the same standard trusted by security professionals. Your password is never stored, never synced, never seen by anyone. It lives only in your head. Forget it, and not even we can open the note. That is the whole point. WHY TROVE โข AES-256 encryption with 600,000-round key strengthening โข Your password is never saved to disk, to iCloud, or to our servers โข The note list and encrypted text stay visible without a password โ decryption happens only in memory, only when you ask โข No account, no sign-up, no tracking, no ads ONE ENCRYPTED LOCKBOX FOR EVERYTHING Bank details, passwords, a private journal, a secret diary, login codes, confidential ideas, a quick brain dump โ keep your whole stash in one secure vault. FEATURES โข Encrypted notes, private journal and secure diary in one app โข Voice dictation โ speak your notes, transcribed on-device (audio never leaves your iPhone) โข Color tags to organize and archive your notes โข Optional iCloud sync โ your encrypted vault follows you across iPhones and survives reinstalls โข Local-only mode if you prefer nothing ever leaves the device โข Share an encrypted note with a friend over any channel โ only someone with the password can open it โข Search by title or date โข Clean, fast, forced dark mode SHARING Send an encrypted note to anyone โ over Messages, Mail, AirDrop, any channel. Share the password separately... Only the person who knows it can open the note, so it stays safe even if the channel is not... PRIVACY BY DESIGN Trove cannot read your notes. There is no backdoor, no recovery, no hint. Strong encryption means only you hold the key. We collect nothing about your content โ what you write stays yours. DISCLAIMER Application cannot add photos, videos to notes by decision of developer. Trove is for text only โ by design. Encrypted media is intentionally not supported to keep the app safe and simple PREMIUM Unlock unlimited notes, sharing, importing and more: โข Weekly or Monthly plan โข 3-day free trial for new subscribers โข Cancel anytime in your Apple ID settings Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your Apple ID account is charged for renewal within 24 hours prior to the end of the current period. Any unused portion of a free trial is forfeited when you purchase a subscription. Manage or cancel your subscription in your Apple ID account settings after purchase. Your secrets deserve a real lock. Keep them in Trove. Privacy Policy: https://lukematpyt.github.io/securenotes-legal/privacy/ Terms of Use: https://lukematpyt.github.io/securenotes-legal/terms/ Support: https://lukematpyt.github.io/securenotes-legal/support/
Screenshots
Verdict
The clearest difference is update cadence: Secret Notes at every 2 weeks against CryptoDuck's every 3 months. CryptoDuck's advantage is iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. CryptoDuck sells 6 in-app purchases, starting at $0.99 per month and Secret Notes sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
CryptoDuck ships an update every 3 months, Secret Notes every 2 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | CryptoDuck | Secret Notes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 11 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Baitemi Technology Co., Ltd | Lukasz Macczak |
In-app purchases
CryptoDuck
- Pro Monthly$0.991 Month
- Pro Yearly$7.991 Year
- Couple Pack$0.99
- Emoji Pack$0.99
- Festival Pack$0.99
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- Pro Lifetime$14.99
Secret Notes
- Secure Notes - Weekly$2.997 Days
- SecureNotes Monthly$9.991 Month
Questions
Is CryptoDuck free?
Is Secret Notes free?
Do CryptoDuck or Secret Notes have ads?
Which is updated more often, CryptoDuck or Secret Notes?
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