Rhyy
Your Rhine check for Basel
Free · Designed for iPhone. Not verified for macOS.
Before you jump in, check the Rhine at a glance: water, weather, UV, flow, swim window and crew on iPhone and Apple Watch.
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. Add duration, distance, how it felt and a note, then keep your latest swims close at hand. Missing something? Send private feedback directly from the app.
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.
• Historical three-day Rhine-temperature curve with a clear change indicator
• Clearer weather now and one hour ahead, with correct day and night symbols
• More current rain detection included directly in the Rhyy recommendation
• A more compact and understandable water-quality card
• Coloured comparison ranges for river level and flow on the main screen
• Faster access to swim time, Swim Crew and feedback
• Reliable refresh when launching or reopening the app
• Improved layouts across Basel German, German, French and English
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 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
- 7.5 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