Sol: Sun Clock

Sol: Sun Clock

Daylight Forecaster & Alarm

869 ratings
220 reviews
$4.99

Details

  • Released
  • Updated
  • January 6, 2012
  • February 5, 2025
Sol: Sun Clock screenshot #1 for iPhone
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Sol: Sun Clock screenshot #6 for iPhone
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About

Forecast sunrise, sunset, and twilight times for any location and date. Set smart alarms that adjust with the seasons and receive detailed solar almanac information. Plan your day around natural light, perfect for photography, outdoor activities, or maintaining sleep cycles.

Sunrise and sunset time forecasting
Twilight period calculation (astronomical, nautical, civil)
Location-aware alarms that adjust seasonally
Global location search and GPS support
Detailed solar almanac information
Golden hour and magic hour identification
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What users say

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What's New in Sol

5.1.5

February 5, 2025

Due to a bug in Apple's iOS 18, in some locations the month in the Date Picker dialog could be a month off. Version 5.1.5 circumvents the bug for iOS 18 users until it can be properly fixed by Apple. We also fixed some external links that were not opening from within the app, and linked to our new social media account on Bluesky.

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Charts

Top Paid

📊 70

Weather

The app has maintained its position at 70 recently.

Last updated on July 19, 2026.

User reviews

Best app for local solar measurements

I love SOL! I had it on my iPhone for many years until it was discontinued. Now only on my iPad, and it is excellent!
Intuitive and informative data about the current status of the Sun. Best thing I like is changing the location and observing the Sun and how it appears much different. You can also time travel and see what the Sun will be like for any date past or present. Cool!
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Still using this app after more than 10 years‼️

Favorite feature: set alarm for best time to go for a hike. Feature request: shadow of gnomon should indicate an approximate sundial effect. Recently learned: You need to swipe the area under the date to show more info. Double-tap that to start or start a newsfeed animation.

Great Alarms & Good UI

I like to be outside around sunrise and sunset every day so with its alarms you can offset to solar events it’s great.

Arctic Day Light

Sol Sun Clock is an invaluable resource for my life in the Arctic. Day light changes radically from winter’s twenty one hours of darkness to summer’s twenty four hours of direct sunlight. Knowing the times of sunrise and sunset is critical for photographic interests as well as knowing what light can be expected through each day of the year. The Sol Sun Clock is the most frequently used app of all apps in my iPhone. Thank you for your support and service. AL7MI (Amateur Radio Station Call Sign)
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Perfect & Simple

I’ve been using this app for about 15 years, at first for timing photography during the golden hour, and now also for making sure I’m or there in the fresh air closer to midday for a healthy regulated circadian rhythm.

Developer apps

User experience

🐞

Reported Bugs

2 issues

Date selection issue where it shows a month ahead

Bug

Notifications stop working after a few days

Bug

Requested Features

4 requests

Add moon phase information

Feature

Allow alarms to work even when device is muted

Feature

Expand alert options beyond sunrise/sunset (e.g. solar noon, golden hour)

Feature

Provide more customization options for alerts and alarms

Feature

FAQ

What does Sol: Sun Clock do?

Sol: Sun Clock forecasts sunrise, sunset, and various twilight times (astronomical, nautical, civil) for any location on Earth and any date. It also provides detailed solar almanac information and allows users to set smart alarms that automatically adjust with seasonal changes.

What are the key features of this app?

Key features include precise forecasting of sunrise, sunset, and twilight periods, the ability to find golden hour and magic hour, global location support via GPS or manual selection, and customizable alarms that adapt to changing daylight hours throughout the year.

Is this app free to use?

Yes, the application is free to use. It does not have in-app purchases or advertisements, offering its full range of features without any cost to the user.

What devices is Sol: Sun Clock compatible with?

The app utilizes GPS for location-aware features, indicating compatibility with mobile devices that have GPS capabilities. It supports both Northern and Southern hemispheres and can be used without a network connection for calculations.

How can I use Sol: Sun Clock for planning?

You can use Sol to plan outdoor activities, photography sessions by identifying golden hour, manage sleep cycles by aligning with natural light, or ensure timely reminders for tasks like walking pets before dark. Its global forecasting and location-aware alarms make it versatile for travelers as well.