iPhone Screenshots


ONE enables 100% secure communication with iOS devices. The ONE principle is based on the only proven secure communication method, OneTimePad (OTP).
A message encrypted with ONE can only be decrypted by the recipient. No one else can read the message, regardless of time and resources.

- Use your iPhone for absolutely secure communication
- Encrypt files, images or even simple texts.
- Generate keys of up to 40MB for free in the app
- Larger keys are available via InApp purchases

How does ONE work:
You create a key that is assigned to a contact or a group. Now you have to meet the contact person or other group members and exchange the key via Bluetooth. This ensures that the key is only present on the sender's and receiver's devices.
Please note: In order to exchange the key securely, it is necessary that the key is not transmitted via the Internet. The safest way is to exchange the key via Airdrop.
The encrypted messages or files, on the other hand, can be transmitted unprotected in any way, as they cannot be deciphered by curious eyes.

What’s New

Version 1.0.1

Bugfixes and improvements

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

AcidTrigger ,


App works great! Would love to see integration with iMessage so that users could open/read encrypted messages within the messages app and send new encrypted messages within the messages app.

App Privacy

The developer, Neelixx, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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