Terms of Use
Last updated: 7 June 2026
These Terms of Use (“Terms”) are an agreement between you and the developer of Rheon (“the app”, “we”, “us”) governing your use of the app. By installing or using Rheon, you agree to these Terms. If you do not agree, do not use the app.
1. What Rheon is
Rheon is an independent, unofficial controller for the D-D H2Ocean P1+ dosing pump (also sold under the Kamoer brand). It is not affiliated with, endorsed by, or operated by D-D The Aquarium Solution or Kamoer Fluid Technology (“Kamoer”). All product names, logos, and trademarks belong to their respective owners and are used only to identify compatible hardware.
2. You need a Kamoer account
To control a pump over the internet, the app uses your existing Kamoer account and Kamoer's cloud service. Your use of that account and service is subject to Kamoer's own User Agreement and Privacy Policy. You are responsible for complying with them and for keeping your account credentials secure.
3. Acceptable use
- Use the app only with hardware you own or are authorised to control.
- Do not use the app for any unlawful purpose, or to interfere with or disrupt Kamoer's services or other users.
- Do not attempt to misuse, attack, or overload any service the app connects to.
4. The app controls real hardware — use it carefully
Rheon actuates a physical dosing pump that moves liquids into a living system. Incorrect doses, calibration errors, connectivity problems, or software bugs can harm aquatic life or equipment. You are solely responsible for how you configure and operate your pump. Test changes with small volumes into a measuring container before dosing into an aquarium, and do not rely on the app for anything safety-critical.
5. No warranty
The app is provided “as is” and “as available”, without warranties or representations of any kind except those that cannot be excluded under the law of England and Wales. We do not warrant that the app will be uninterrupted, error-free, secure, or compatible with any particular device, firmware, or version of Kamoer's service, which may change at any time outside our control.
Nothing in these Terms affects your statutory rights as a consumer that cannot be excluded or limited by law.
6. Limitation of liability
Nothing in these Terms limits or excludes the developer's liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot be limited or excluded under the law of England and Wales.
Subject to the paragraph above, and to the maximum extent permitted by law, the developer will not be liable for any loss of livestock, plants, data, profits, or equipment, or for any loss or damage that was not reasonably foreseeable, arising out of or related to your use of, or inability to use, the app. The app is supplied for domestic and private use only; if you use it for any commercial purpose the developer will have no liability to you for any business loss.
Because the app is provided free of charge, the developer's total liability to you for all other claims relating to the app is limited to £100. This does not affect your statutory rights as a consumer that cannot be excluded or limited by law.
7. Changes and availability
We may update, change, or discontinue the app or these Terms at any time. If these Terms change, the updated version will be posted on this page with a new “Last updated” date. Continued use of the app after changes take effect means you accept the updated Terms.
8. Governing law
These Terms are governed by the laws of England and Wales. The courts of England and Wales have exclusive jurisdiction over any dispute arising out of or relating to these Terms or your use of the app, except that if you are a consumer resident elsewhere in the United Kingdom you may also bring proceedings in the courts of the part of the UK where you live. Nothing in these Terms affects your statutory rights as a consumer that cannot be excluded or limited by law.
9. Contact
Questions about these Terms? Contact privacy@rheon.app.