Seepegel vs Rhyy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seepegel
Get real-time water levels for Lake Constance directly on your device. This app provides current measurements, historical trends, and visual representations of water status, ideal for anyone who enjoys the lake.
- Current water level in cm (live data)
- 24-hour water level trend
- 7-day water level trend
- Home screen widget
- Animated wave visualization
- Immediate water status assessment
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Water level at Lake Constance, measured at Konstanz. Seepegel displays the latest available reading, its measurement time and the change over 24 hours. FEATURES • Water level in centimetres, with low- and high-water status • History over 24 hours, 7 days, 30 days and one year • Compare water levels across two periods • Configurable push alerts for minimum and maximum levels • Home Screen widget with water level and measurement time • Apple Watch app and watch face complications • Take or select a lake photo and add the water level, measurement time and seepegel.app branding • Save photos to Photos or share them • Light and dark mode DATA SOURCE Readings are provided by the German Federal Waterways and Shipping Administration through the PEGELONLINE web services (Konstanz measuring station). Data is provided without warranty. Seepegel is not an official government app. Push alerts are personal threshold notifications, not official warnings. Seepegel is free and contains no advertising.
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
Seepegel and Rhyy are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Seepegel ships an update every 3 weeks, Rhyy every 11 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Seepegel | Rhyy |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 3 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 10 MB |
| Age rating | 4+ | 12+ |
| Developer | Joerg Klausewitz | Patrick Habluetzel |
In-app purchases
Seepegel
No in-app purchases
Rhyy
No in-app purchases








