When you tap the Download Now button, the APK file will be downloaded to your device. Then just follow the instructions on your phone to install the app.
If it doesn't work automatically, you should find the APK file in your downloads folder. Navigate to the folder, tap the file icon and the app will be installed.
Finally just drag it to a suitable place on your home page.
There are two permissions required:
1. "Appear on Top". This is required to ensure the app will wake your phone and display an alert even when the app is not open.
2. "Send and receive SMS messages". The app needs to respond to incoming A&T messages, and send replies.
IMPORTANT! When you have given the app permissions, close it. Then re-open it to personalise it in the Settings page.
If the app doesn't download, that's probably because you are using the phone manufacturer's built-in browser. Try Chrome browser instead, which has been tested and works perfectly.
If you have problems with the app on a Samsung phone (especially with Android 11), look at https://dontkillmyapp.com/samsung and follow the advice there.
If you have problems with the app on a Huawei phone, look at https://dontkillmyapp.com/huawei and follow the advice there.
If you have problems with the app on a Xiaomi phone, look at https://dontkillmyapp.com/xiaomi and follow the advice there.
If you have problems on any other phone, look at https://dontkillmyapp.com and see if you can find any guidance there.
If we make any updates to the app, we will send you an email with a link to download and install the update.