Cipher — Terms

These terms cover this website, its signup form and the software you get from it.

Cipher was called TsskFlow until 9 November 2026. It is the same product from the same maker, and these terms cover it under both names.

What this site is

You can install the Mac program from this site today, and the iPhone app from the App Store. Nothing here is an offer to sell. Cipher is free. If Cipher ever charges, we’ll tell you first, and nothing you’ve already used becomes paid.

The signup form

The signup form near the bottom of the home page is for people on Windows, Linux or Android. If you leave your email, we’ll email you when Cipher is available on the platforms you ticked. Signing up isn’t a purchase, a reservation, or a promise that any version ships. What you tick tells us what to build first.

We won’t use your email for unrelated marketing. You can unsubscribe any time from the link in any email we send.

The software

Cipher is proprietary. It isn’t open source, and nothing here grants you a right to copy, modify or redistribute it. These terms also cover the Mac program and, when it arrives, the iPhone app, until they have terms of their own.

Your data

Messages between your phone and Mac are end-to-end encrypted, so Cipher can’t read them. The coding agent you use follows its own provider’s terms and may collect data under your account with them, which Cipher doesn’t control. The privacy policy has the details.

No warranty

This site is provided as is. We try to keep it accurate and available, but we don’t promise either. If something here is wrong or the site is unavailable, we’re not liable for what follows.

Nothing in these terms limits liability that the law does not allow us to limit.

Fair use of the form

Please use only your own email address, and don’t automate signups. We remove entries that seem to break either rule.

Other people’s names

Cipher is not affiliated with or endorsed by Anthropic, OpenAI, GitHub, Google, xAI, Meta or the opencode project. Product names belong to their owners.

Changes

These terms may change. If they change, we’ll tell you first and ask you to agree again. The date at the top shows when they last changed.

Getting in touch

Help and feedback: feedback@cipherflow.dev
Security reports: security@cipherflow.dev