Press Kit
An indie sun app that looks like Apple made it — and the first in the category that forecasts light quality, not just geometry.
ONE-LINER Know the light before it happens.
PLATFORM iPhone · iOS 26+
PRICE Free · Pro $4.99/mo · $29.99/yr (3-day trial) · $79.99 lifetime
PRIVACY Data Not Collected — no account, no analytics, no backend
CONTACT support@sundeckapp.com
The story
Sun apps answer "where is the sun." People are actually asking "is tonight worth the drive?" SunDeck computes everything the category leaders compute — on device, offline, tested against the U.S. Naval Observatory — then goes one layer up: it reads the forecast's cloud layers at the horizon and scores every sunrise and sunset 0–100, hours ahead, with the reason in plain words.
Everything hangs off one interaction: the Dial, a scrubber that drags the sun through time on every screen — across the arc, the AR sky, map rays, and real 3D building shadows.
Angles that write themselves
• The category leader's UI hasn't changed since 2012 — this is the redesign.
• Built on WeatherKit + ARKit + ActivityKit + WidgetKit + App Intents, zero third-party dependencies, "Data Not Collected."
• The accuracy receipt: a golden test suite pinned to USNO and JPL Horizons, 13 cities, polar seasons included.
Screens
App icon: 1024px PNG. All assets in this kit may be used in coverage of SunDeck.
