Lake Day
GitHub ↗

Which lake,
which day.

An iOS app for Washington lake days. Everything below is the app's own scoring, running here against the same live feeds — nothing on this page is a mock-up.

Lake day score dial ·· water
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lake day score

Reading the King County swim-beach feed, the Open-Meteo forecast and the toxic-algae snapshot.

The score, for this lake

Nothing is hidden behind the number

The same numbers, on the phone

Lake Day's list screen: a map of King County with lakes pinned by safety state, above cards for Beaver Lake, Fivemile Lake, Pine Lake and Lake Wilderness, each showing an Open pill, water temperature, distance and a score dial.
Live King County data, 2 August 2026.

Every monitored beach, right now

Today at the beaches

The feeds behind it

Free, keyless, and answering right now

Build it

Clone, generate, run

git clone https://github.com/Nano-AI/lake-day.git
cd lake-day
brew install xcodegen && xcodegen
open LakeDay.xcodeproj

The Xcode project is generated from project.yml, so it isn’t checked in. Tests cover the rating curves, the safety hard-zero and the feed parsers.