Solstice turns your iPhone into a precision offline sun-path calculator and architectural light studio. Built for architects, 3D artists, photographers and anyone who loves clean geometry.
Explore the labNo internet or GPS needed. Precise astronomical algorithms give exact azimuth, elevation and solar arcs for any latitude and date, instantly.
Rotate mechanical time rings to follow the sun from dawn to dusk, with responsive CoreHaptics feedback in your fingertips.
See how sunlight enters window frames, measure building shadow lengths and inspect light diffusion in real time.
Lay your device flat and your desk becomes an ambient astrolabe, showing live sun tracking and daylight hours remaining.
🏛️ We are a small studio of designers and tinkerers who love buildings, shadows and the quiet maths of the sky. Solstice grew from our own sketchbooks.
🧭 Our mission is simple: put an exact, beautiful sun-path instrument in every creator’s pocket, with no network, no account and no friction.
📷 Solstice gives you azimuth, elevation, shadow lengths, window light studies and a desk-side astrolabe, so you can plan a facade, frame a shot or stage a render with confidence.
🌅 Zero ads. Zero internet. Master the light.
Solstice: Sun Path & Light Lab is built to work entirely on your device. In short: the app collects, stores and shares nothing.
None. Solstice does not collect personal data, location, device identifiers, usage statistics or any other information. Latitude and date values you enter are used for calculation only.
Since we hold no information, we do not use, analyze, profile or sell any. Every sun position and shadow is computed on the spot by the on-device engine.
Nothing is sent to a server and there is no cloud. Any preferences you set stay locally on your iPhone.
Solstice contains no third-party analytics, advertising networks, trackers or social SDKs. It needs no internet connection and makes no network requests.
Because everything runs offline and locally, there is no transmission to intercept and no remote database to breach. Your device’s own protections apply.
The app is suitable for all ages and is COPPA-friendly: we collect no data from anyone, including children under 13.
There are no accounts to manage. To remove any locally stored settings, simply delete the app from your device.
If this policy changes, the updated version will appear on this page with a new effective date. Our core promise of collecting nothing will remain.
Questions? Write to privacy@solsticesunpathlightlabapp.com.
☀️ Questions, feedback or a project in mind? We would love to hear from you, so drop us a line.
⏳ We typically reply within 24–48 hours.