Comparison

Seepegel vs Rhyy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Rhyy

Features
Read full description

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

Seepegel4 screens
Rhyy3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
Seepegel versus Rhyy: the parameters behind the verdict, then further details
ParameterSeepegelRhyy
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 3 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS18.617.0 — better
Further details — not scored
Size4 MB10 MB
Age rating4+12+
DeveloperJoerg KlausewitzPatrick Habluetzel

In-app purchases

None

Seepegel

No in-app purchases

None

Rhyy

No in-app purchases

Questions

Is Seepegel free?
Seepegel is free to download, with no in-app purchases.
Is Rhyy free?
Rhyy is free to download, with no in-app purchases.
Do Seepegel or Rhyy have ads?
Neither Seepegel nor Rhyy shows ads.
Which is updated more often, Seepegel or Rhyy?
Seepegel ships an update every 3 weeks, and Rhyy every 11 days. Most recently, Seepegel was updated on October 30, 2026 and Rhyy on October 31, 2026.

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