In this section
- End-to-end encryption in chatsHow AiThao encrypts messages, files, voice messages and group chats with the Signal Protocol, how to check a safety number, and what the server still sees.
- Call securityWhen an AiThao call is end-to-end encrypted, what changes when translation is switched on, how call media travels, and what is kept about a call.
- Screenshot protection for private chatsIn AiThao you can ask not to be screenshotted: the other person’s app leaves the chat out of screenshots and recordings. What it covers and its limits.
- Translation and privacyTranslation in AiThao happens in the cloud. What is sent to translation providers and what is not, how to turn cloud translation off, and what AiThao keeps.
- Account and sign-in securityAiThao accounts need no phone number or email. How sign-in and recovery work, how sessions are protected, and the privacy controls for your profile and status.
- Your data: retention, backup and deletionHow long AiThao keeps messages, files, call logs and logs, how the encrypted chat backup works, and how to get a copy of your data or delete your account.
The short version
- Chats are end-to-end encrypted with the Signal Protocol: messages, photos, files, voice messages, locations and contact cards. The server stores and delivers copies it cannot read.
- A call without translation between two phones that support it is end-to-end encrypted too.
- Translation is the exception. It happens in the cloud, not on the phone, so a translated message, voice message or call is not private between the two of you alone.
- Creating an account needs no phone number, email or name.
- The app sends events to measure advertising effectiveness, and map services receive data when you use them. The privacy policy explains the details and available settings.
Two kinds of encryption, kept apart
Every connection to AiThao is encrypted in transit (HTTPS/TLS). That protects data on its way, but the server at the other end can still read it. End-to-end encryption is different: the content is locked on your phone for the other person’s phone, and the server only ever holds a copy it cannot open.
This section says which of the two applies to each part of AiThao, instead of calling everything “encrypted”.
What the server can see
Even with end-to-end encryption, a messenger’s server needs some information to deliver messages: who wrote to whom and when, how large a message is, whether it was delivered and read, and which message a reply points to. AiThao’s server sees this, and not the content.
Group calls with translation
Group calls are encrypted in transit; a call with translation is not end-to-end encrypted. With a speaker’s consent, their speech is sent to a cloud translation provider. Video is not sent for translation.
Photos, documents and shared decisions
Add a sticker pack from a sticker you receive. Create polls and propose a group photo or cover for a vote. Polls and votes are processed by the server and are not end-to-end encrypted.
Questions
Is AiThao end-to-end encrypted?
Chats are, and so are calls without translation between phones that support it. Translated messages and translated calls are not, because translation happens in the cloud. The pages in this section explain each case.
Where are the full terms?
In the privacy policy, linked beside this page. This section explains the same facts in plainer words; the privacy policy is the authoritative text.