Terms and
conditions.

1. Who you are dealing with

SNRflow ("the software", "the app") and this site are published by Kaan Saiti, an individual based in Paris, France, operating under the name KAANATU. Contact: the contact form.

2. Licence to use the software

SNRflow is free for personal, non-commercial use. You may install it on the machines you use, and the clips you produce with it are entirely yours — including commercially, and including with the watermark removed if you turn it off in the template.

The software itself is proprietary. It is licensed to you, not sold. You may not resell it, redistribute modified copies, decompile or reverse-engineer it, or remove the in-clip application signature. If you want to use SNRflow inside a business or a paid service, ask me first — the answer is usually yes.

2.1 Third-party software

SNRflow calls Siril and ffmpeg, which are independent programs under their own licences (GPL and LGPL/GPL respectively). They are not covered by these terms, and installing them is subject to their own conditions.

3. Your account

An account is optional — the software works without one. If you create one:

• Give an email address you actually control; it is how a password reset reaches you.
• Keep your password to yourself. You are responsible for what happens under your account.
• One human, one account. Automated sign-ups get removed.
• You can ask for your account to be deleted at any time, and it is deleted — not deactivated.

4. Your images and your data

Your frames never leave your computer. All reading, stacking, measuring and encoding happens locally. The app does not upload your images, does not phone home with your data, and has no server-side copy of anything you process.

The site stores only what you type into it: the email and name you register with, and the content of any message you send. It is used to answer you and — if you ticked the box — to send the newsletter. It is never sold, rented or passed to advertisers. Unsubscribing is one click, in every email.

When you download. The download form asks for a pseudo, an email address and a country. Answering it is optional — "Just download" gets you the same file, at the same speed, with nothing recorded about you. If you do fill it in, those three fields and the date are kept so I know how many people use SNRflow and where from, and so I can warn you when a release fixes something. Nothing else is taken: no tracking cookie, no advertising identifier, no third-party analytics.

Under the GDPR you can ask for a copy of what is held about you, ask for it to be corrected, or ask for it to be erased. Use the contact form; expect a reply within thirty days.

5. Newsletter

Ticking the newsletter box at sign-up is optional and separate from creating the account. Refusing it changes nothing about your account or your access to the software.

6. Donations

Donations are voluntary gifts towards development. They are not purchases: they unlock no feature, grant no licence, and buy no support commitment. They are handled by an external payment provider — I never see or store your card details. Donations are non-refundable, but if you gave by mistake, write to me and I will sort it out.

7. What is not promised

The software is provided "as is", without warranty of any kind, express or implied, including fitness for a particular purpose. It reads your files; it does not modify or delete them — but keep backups of your data anyway, as you would with any tool.

The figures SNRflow computes — signal-to-noise ratio, fitted curve, recommended total integration — are measurements and models, not guarantees. They assume your calibration is sound and your frames are comparable. Treat them as a well-founded indication, and check them against your own judgement.

To the extent permitted by law, I am not liable for indirect or consequential loss arising from use of the software, including lost imaging time or lost data. Nothing here limits liability that cannot legally be limited.

8. Changes

These terms may change as the software grows. The version and date at the top always say which text is in force; material changes are announced in the newsletter. Continuing to use SNRflow after a change means you accept the new version.

9. Applicable law

These terms are governed by French law. If something goes wrong, write to me first — almost everything can be settled that way. Consumers keep their right to bring proceedings before the courts of their own place of residence.