iOS: Let's say you like to let your spouse or roommate know when you're on your way home from work. It's easy enough to send them a text, but Leaving Work can do this for you automatically.
You download the app, allow it access to your location, then save your recipient's phone number. The app figures out when you've left work by accessing your GPS location, and according to the terms, it also captures information from your device's accelerometer and ambient light. When it detects you've left work, it will automatically text the number you've saved.
You can customise the text of the message, and you can also set the hours during which the app works (helpful if you leave the office for lunch). You can also pause it whenever you feel like it. There's no need for the recipient to have the app installed, either; they will just get your message as a regular text. In the current version, your message will come through from a different number, so it's probably smart to give the recipient a heads up. In a Product Hunt thread, Director of Business Operations Mikey Renan says they're working to change that.
Leaving Work [Apple Store]