App Tiles is very useful app for optimizing app launching speed. You can add up to 6 shortcuts for apps in your quick toggles area on the notification bar. Just pick your apps, drag the tiles to the top of the list and they are ready to launch. You can click them in every app and at any time you want. Always be prepared with App Tiles!
A few tips:
If you find out that the quick tiles are not working after a few days then probably your device have an option to stop apps from working if they are not opened for a few days. Some of the latest Samsung phones have this option. To continue using the app you should add it to the battery exceptions list and allow it to work no matter if opened or not.
If you find out that after rebooting your device the quick tiles are not working you should allow the app to auto launch after reboot. Usually this is not necessary but on some Xiaomi and Huawei devices there's an option to block apps from auto launching and this prevents app from working after reboot.
There's ads in the app but they are showing only while you are setting up your favorite apps in the main app screen. When you are using the quick tiles you will never see ads from the app.