Download the app

This year, we’ve rebuilt Sentr to enable you to download it to your Apple or Android phone. You don’t download it from the app store, but it still works like an app. Here’s how to get it on your phone.

Android users

If you’re using an android phone, click the button below to download the app to your phone

iPhone users

If you’re using an iPhone, you need to add the app to the home screen. Please use the instructions below.

1. Open Safari (don’t use chrome or any other browser for this)

2. Go to

3. Tap the share button at the bottom of the screen, that looks like this:

4. Scroll to and tap ‘add to home screen’ in the bottom menu:

5. Hit ‘Add’ in the top right, and the app will be added to your home screen.

Here is a video showing the whole process:

You can of course continue using Sentr as a website rather than an app if you prefer.