MsgSecret vs Coo

Turn everyday text into coded messages for puzzles, playful exchanges, and learning about classic ciphers. Choose a method, set a key when needed, and encrypt or decrypt on your device. MsgSecret includes classic ciphers, word transformations, and text encodings such as Base64. These methods do not provide secure encryption and must not be used to protect passwords, personal records, financial information, or other sensitive data. Base64 is encoding, not secrecy. Get started with a fixed interactive sample that shows a message being encoded and decoded back to its original text without spending credits. Use separate encrypt and decrypt input fields to work without overwriting what you entered. Method notes explain how each transform works and its limitations. Share the coded result through the iOS share sheet, or copy and paste it into your messaging app. Optionally share decoding instructions too. Recipients select the same method and paste only the coded message into MsgSecret. When a method needs a key, share it separately; keys are not automatically included in shared messages. Free access includes 3 successful encrypt or decrypt operations each day. This allowance resets at midnight UTC and does not accumulate. After using your daily allowance, each successful operation uses 1 saved credit. A completed optional rewarded ad adds 5 credits. A one-time in-app purchase provides unlimited transformations without rewarded ads. Previously purchased unlimited access can be restored. Features Classic ciphers, word puzzles, and text encodings in one place Fixed interactive sample with an encrypt-and-decrypt round trip Separate encrypt and decrypt input fields Native sharing, optional recipient instructions, and clipboard tools Method explanations with clear security limitations Exact key adjustment and accessible controls 3 free successful transformations per day Optional rewarded ads for 5 saved credits One-time unlimited access and Restore Purchases Designed for iPhone and iPad with a focused dark interface

Keeping a relationship private at work—or simply not ready to make it public? Share a quiet conversation that stays between you and someone you trust. Coo is not another messenger. Keep using the messaging apps you already know. Coo encrypts your private message on your device and places it inside text that looks like an ordinary sentence. Your connection opens that sentence in Coo to read the original message. How Coo works 1. Write a private message in Coo. 2. Copy the ordinary-looking sentence Coo creates. 3. Paste and send it in your usual messenger. 4. Your connection opens it in Coo. Privacy by design • AES-256-GCM encryption runs on your device. • Connection keys stay in each device's secure storage. • Text secrets do not pass through Coo servers. Photos are encrypted on your device and stored temporarily as unreadable ciphertext (deleted on opening for one-time photos; up to 30 days). Even Coo cannot see their contents. The app keeps no conversation history. • Biometric or device lock and screen-capture protection help guard the screen. • By default, an envelope opened once cannot be opened again on that device. Use Coo for a confession, a surprise, or an address or account number you would rather not leave visible in a chat. Free and subscription The free plan includes one connection and 10 starting stamps. When your balance is zero, one stamp is added at midnight. With a zero balance, you can also earn one stamp by finishing a rewarded ad. Each envelope uses one stamp. Opening received messages and photos is always free. A subscription adds multiple connections, photo sending, unlimited secret creation and sending, alternate app icons, and an ad-free experience. Encryption and privacy protections are the same on both plans. [Subscription] Monthly and yearly subscriptions are available. The price shown in the app is localized for your App Store region. Payment is charged to your Apple Account. The subscription renews automatically unless canceled at least 24 hours before the current period ends. You can manage or cancel it in your App Store account settings. Privacy Policy: https://sendcoo.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/