Rhyy
Your Rhine check for Basel
Free · Designed for iPhone. Not verified for macOS.
Your Rhine check for Basel and Rheinfelden: water, weather and swim windows at a glance. Optional encrypted logbook sync across devices and rhyy.ch.
Basel or Rheinfelden: wondering whether the Rhine looks good today? Rhyy gives you the quick pre-swim check on iPhone, Apple Watch and right in your widgets.
At a glance, you get water temperature, weather, air temperature, river level, flow and UV index. Rhyy puts the numbers in context, shows how they are developing and suggests a swim window for today and tomorrow. No need to check five different sources before heading to the river.
Water quality is more than a row of numbers. Comparison ranges and clear guidance help you understand what oxygen, pH and conductivity mean for your swim – and what those readings cannot guarantee.
With Swim Crew, you can anonymously show that you are heading into the Rhine today. Read current community updates, like a post and jump straight to the open form on rhyy.ch when you want to write one.
Your swim log stays on your device by default. You can now opt into encrypted sync across multiple devices and rhyy.ch, with no account needed. Add duration, distance, how it felt and a note, then keep your latest swims close at hand. Ideas or something missing? Feedback through the in-app form is very welcome.
On Apple Watch, the essentials stay on your wrist. Widgets and complications show water, air, UV, status and the swim window without making you open the full app.
Rhyy shows how things look right now. The river still gets the final say: always check conditions on site and only get in when it feels right for you. Rhyy is guidance, not clearance and not a safety or rescue recommendation.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
One last splash before the season ends:
• A fresh design, tidied up and easier to navigate.
• Rheinfelden joins the swim. Hello upstream!
• Your logbook travels with you: optional encrypted sync across devices and rhyy.ch.
Ideas or spotted a hiccup? Send us feedback through the form. We're all ears – once the water's out.
The developer, Patrick Habluetzel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Patrick Habluetzel
- Size
- 10 MB
- Category
- Weather
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, German, Swiss German
- Age Rating
13+
- 13+
- Infrequent
Profanity or Crude Humor
Alcohol, Tobacco, Drug Use or References
- Copyright
- © 2026 Patrick Hablützel