It is an useful and convenient app for average people. There are some methods about preparation before launching an app, wish it will be useful to you!
(1)Test your app
Test your app on different phones to make sure it is suitable for any kind of screen size and the resolution. Besides, test it with different operating systems' versions, especially with the lower versions. Ensure your app is compatible with a variety of operating systems.
(2)Creating a landing page
When potential users see your app or the advertisements of it, they need to a page where they can know details about your app. Therefore, before submiting your app, you need to create a landing page for it. You can also put a video or text description for your app to make your target users know your app well. This could invert them to your real users.
(3) Upload it on app stores
Survey shows that 80% users like to download Android apps on app stores, so if you want to get more users for your app then don’t hesitate to upload it on app stores.
(4) Learn about your app
you must learn about your app clearly before you submit your app, including the function and other features of your app, which can help you assure the targeted users of your app and find the right development direction of your app.
(5) Create a community
you can create a community of your app, the users can communicate with others in this platform, and you can find the potential problem of your app by reading the messages from the users and find the relevant solution to solve these problems.
I am working on app store optimization company (ASOTOP1) , if you have any problem about it later, please feel free to contact me!