Rhyy vs z'Badi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rhyy
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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.
z'Badi
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z'Badi gives you a clear and fast overview of Zurich’s public baths and swimming spots. Check opening hours, water temperatures, weather, crowd levels and locations. Save your favourite badis, explore them on the map and sort by name, temperature, occupancy or distance. Whether you are heading to the lake, a river bath, an outdoor pool, an indoor pool or a warm-water bath, ZürichBadiInfo helps you choose faster. The app uses publicly available sources and live data where available. Some information may vary depending on source availability, weather conditions, season or operating status.
Screenshots
Verdict
The clearest difference is iOS requirement: Rhyy at 17.0 against z'Badi's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rhyy ships an update every 11 days, z'Badi weekly. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.
| Parameter | Rhyy | z'Badi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | Patrick Habluetzel | Konrad Schmid |
In-app purchases
Rhyy
No in-app purchases
z'Badi
No in-app purchases








