Fortunately, you do not need to guess your keywords. There is an easier way to find what are the most popular keywords related to the category or topic of your app. You can find them through the App Store suggest feature that is also known as the autocomplete function (that works similarly to Google Autocomplete) of the Android App Store search - a feature that was created to help users find content on the App Store faster.
From a user perspective, it is quite similar to what Google or any other search engine does. When you start typing your search term, you will see a list of suggested terms underneath the search box. You can tap on any of those suggestions to quickly perform searches.
We do not know what is the exact logic of the App Store autocomplete algorithm, but without a question, it is the gold mine for app store keyword research and mobile SEO. By using it, you can find keywords and topics that could drive lots of free organic installs for your app. Doing keyword research manually through the App Store autocomplete function can be very tedious and time-consuming.
Instead, you can use Keyword Tool for Google Play App Store - one of the best app store optimization tools on the web. It will help you save a lot of time while helping to generate hundreds of relevant, high-traffic keywords that can make your app easier to find by users on the Google Play Store.