Aare vs Rhyy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aare
This app displays the current temperature of the Aare river in Switzerland. It covers the river's course from the Aare Glacier through various cities to the Swiss Water Castle. Enjoy a quick and beautiful way to check river temperatures.
- Current Aare river temperature
- Covers entire river course
- Data from BAFU
- User-friendly interface
- Quick and beautiful display
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Aare App zeigt die aktuelle Temperatur der Aare an. Vom Aaregletscher über Interlaken, Thun, Bern, Biel, Solothurn, Aarau bis ins Wasserschloss der Schweiz. Schön und schnell. «Eine ganz tolle und überaus funktionale Idee!! Super!» —Alexander Tschäppät, Stadtpräsident Bern, über die Aare iPhone App, 9. Juli 2010 Viel Spass beim Aareschwimmen, Raphael Messwerte von BAFU
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.
Screenshots
Verdict
The clearest difference is update cadence: Rhyy at every 11 days against Aare's every 14 months. Aare's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support 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.
Aare ships an update every 14 months, Rhyy every 11 days. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.
| Parameter | Aare | Rhyy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 14 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 10 MB |
| Age rating | 4+ | 12+ |
| Developer | illuBits Schaad | Patrick Habluetzel |
In-app purchases
Aare
No in-app purchases
Rhyy
No in-app purchases








