OneCryption
Christian Hell
No ratings yetUtilitiesAges 4+
Screenshots
About this app
Private files and messages, encrypted on your iPhone. OneCryption is an offline encryption tool for people who prefer to exchange secret keys in person. It does not operate a message-delivery network: you choose how to send the encrypted result. HOW IT WORKS 1. Meet your contact and confirm their identity. 2. Generate shared secret key material and transfer it directly between nearby devices. 3. Write a message or select content, encrypt it locally, and share the encrypted result through a channel you choose. 4. The recipient decrypts it with the matching shared key. YOUR KEYS, YOUR CONTROL - Encrypt and decrypt text, photos, videos, audio and files. - Manage contacts and shared keys on your device. - See how much key material remains and exchange a fresh key when needed. - Use local encryption without a OneCryption messaging account. OneCryption uses a one-time-pad workflow. Key material must remain secret and must never be reused. Protect the devices and the key exchange. The channel you use to deliver encrypted content has its own privacy and metadata implications; encryption does not make a compromised device safe. FREE AND PREMIUM Text encryption is available for free. Some media and file features require Premium. Purchase options and current prices are shown in the app. If you choose a subscription, it renews automatically unless you cancel it in your App Store account settings. Privacy policy: https://www.onecryption.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What's new
Version 2.1.1 · Oct 13, 2026
Security update for file and audio encryption. Key material is now reserved before encryption, and key counters cannot be reset by stale saves. Previously encrypted messages remain readable. Newly encrypted files and audio require OneCryption 2.1.1 or later on both devices. Messages using a future unsupported format now show an update notice with a link to the App Store. Adaptive layouts for iPhone Duo and improved translations across all eight supported languages.
In-app purchases
The most popular purchases on the App Store.
- Premium features yearlySubscription · 7 days free trialUSD 500.00 / year
- Premium features monthlySubscription · 7 days free trialUSD 49.99 / month
More from Christian Hell
You might also like
CypheriaActvyo Software Development Service Asds
Encryption: Secure TextSerhii Voloshyn
CipherPigeonVespera Systems
Greenbox SafeDiscus IT
DotBGE: 檔案加密刚 熊
DNS Forge: Private & SecureBen Spears
Authenticate By KDCKenneth Lovett
SUYLEX-DIGITAL SECURITY RADAREGE SIBER BILISIM TEKNOLOJILERI VE TICARET LIMITED SIRKETI
加密中心杭州矩路科技有限公司
SyfraSergiu Bulat