CryptoDuck vs PrivTalk
Price, ratings, monetisation and update history for both apps, side by side — 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
PrivTalk
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PrivTalk: End-to-End Encrypted Messaging for Total Privacy Worried about chat leaks, screen peeking, or the consequences of a lost or stolen phone? PrivTalk is the privacy-first messaging app that puts you in control. We use end-to-end encryption (E2EE) to ensure your conversations remain strictly between you and the intended recipients. How PrivTalk Protects You: End-to-End Encryption: Your messages are encrypted on your device before they are sent. They remain scrambled during transmission and can only be decrypted by the recipient's device. Local Key Storage: Your unique decryption keys are generated and stored only on your phone. Our servers never have access to your keys or your unencrypted messages. This is a true zero-knowledge system. Leak Prevention: Safeguards your privacy against phone theft, loss, or unauthorized access. Even if someone has your phone, your chats are unreadable without the key. Key Features: Self-Destructing Messages: Set timers for messages to automatically disappear after being read or after a set period. Secure 1-on-1 & Group Chats: Create encrypted conversations for both private dialogs and secure groups. User-Friendly Design: Enjoy powerful security without complexity. Privacy is just a tap away. Our Promise: Your privacy is non-negotiable. PrivTalk is built on the principle that you should own your data. We don't collect your messages, and we never will. Download PrivTalk today and experience true peace of mind. Subscriptions will automatically renew unless canceled, and will be charged to your Apple ID account at the end of each billing cycle. This service is subject to Apple’s Standard End User License Agreement (EULA), available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
CryptoDuck and PrivTalk are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. CryptoDuck sells 6 in-app purchases, starting at $0.99 per month and PrivTalk sells 9 in-app purchases, starting at $38.00 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on August 10, 2026 and May 19, 2026 respectively.
| Parameter | CryptoDuck | PrivTalk |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Baitemi Technology Co., Ltd | 极算科技 |
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
PrivTalk
- per week$38.007 Days
- per month$98.001 Month
- per year$199.001 Year
- 30天会员$4.99
- 30天群聊会员$9.99
- 90天会员$14.99
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- 90天群聊会员$29.99
- 360天会员$39.99
- 360天群聊会员$99.99









