mAARE vs Rhyy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
mAARE
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«mAARE» measures the water temperature of the river Aare in Bern Switzerland – fast, accurate and charming. People love to swim in this clean river – so do we. Now you can log your swims in your Aare-Diary. Attention: marine creatures designed by Büro Destruct sighted in the river! Including the mAARE iMessage sticker set and homescreen widgets!
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 mAARE's every 6 months. 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.
mAARE ships an update every 6 months, Rhyy every 11 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.
| Parameter | mAARE | Rhyy |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 63 MB | 10 MB |
| Age rating | 17+ | 12+ |
| Developer | Buro Destruct | Patrick Habluetzel |
In-app purchases
mAARE
No in-app purchases
Rhyy
No in-app purchases








