Use Suntrap to see how long the sun is shining on your balcony or terrace. All you need to do are three steps:
1. Open Suntrap and allow Suntrap to determine your current location.
2. Hold your iPhone parallel to your balcony or terrace, the balcony/terrace must be on the left, your house/apartment on the right side of your iPhone.
3. Save your position and see the daily sunshine time at the bottom.
If you have any problems write an e-mail, I cannot answer to any ratings.