Before you hire any ASO practitioner, I suggest that you ask them how they do it. The process of key word research is crucial as it's the foundation to anyone's optimization Success.
My ASO strategy STARTS with proper Key-word Research and a continuous strategy to improve your chances of increasing your organic traffic. (I use mobile action as my main keyw0rd tool)
Although my ASO process is not complex, I always see to it to follow trends, app store algorithm change and work on it base on relevance, traffic score, and competition. I also go for long tail key-words by user intent.
In my Basic ASO Package, I will provide you with the best keywords for your App. I will also provide the best Title for your app, and a free feature on my website.
I also offer Advanced AppStore Optimization package for an additional fee, but it comes with everything from title, *keywords, description, along with five localizations.
App Store "SEO" Optimization shouldn't be a struggle. Let me help you find the best keywords for your apps!
See primary pic for my aso result - FNAF Trivia Asylum. It's a paid app with a good amount of regular daily downloads.