SolCalc - Solar Calculator

Robert Ehrhardt

In-app purchases

About this app

SolCalc is a solar calculator that helps giving information about sun and moon.

This includes information about sunrise, sunset together with data of the blue hour, golden hour and twilight times (civil, nautical and astronomical). Furthermore you can calculate information about moonrise, moonset and moon phases (calculated data are approximations of +/- 1 day accuracy).
You also can calculate and visualize the shadow length that an object will create.

In this app you can view data for multiple locations. These can be defined manually or automatically by getting your GPS location. Additionally you have the opportunity to manually set timezones of the locations, which can be helpful if you are planning trips to locations with another timezone than the one, where you currently are in.

Core features at a glance
☀️ Calculation of sunrise, sunset and solar noon
🌗 Calculation of moonrise and moonset + moonphase
🌠 Calculation of civil blue hour
🌌 Calculation of twilight times (civil, nautical and astronomical)
🌅 Calculation of golden hour
💫 Visualization of the azimuth-data of sunrise, sunset, moonrise and moonset
💫 Visualization of the azimuth-data of sun and moon for specific time
💫 Calculation and visualization of the an object shadow (e.g. helpful for planning photovoltaics/pv alignment)
📊 Visualization of sun heigth over a day (zenith)
❖ definition of multiple locations, including current position (based on GPS)
❖ forecast

Pro features
❖ no limit in selecting a date for calculation (max. +-7 days in free version)
❖ full monthly forecast
❖ export of forecast-data to Excel-tables

Note: the calculated values are approximations to plan your photography trips. Additionally it depends on weather situation, how good or if the blue or golden hour is visible.

Ratings and reviews

I have looked for an app like this for some time. I wanted a simple to use, strait forward app. I purchased the pro version ten minutes after I downloaded the app. I absolutely love this app.

basically useless unless upgraded to pro.

Interesting app I don't understand much about it yet

What’s new

- fix issue that circle in map is black
- added sun shadow
- added option to select location via map
- added Solar altitude
- added option to change map type