AppBrain provides all the related insights that can be used to grow apps . If you want to track the growth of your competitor application , then appbrain can be most useful for this.

It's good for getting info about apps, their tech stack and number of downloads on both android and ios

What I like best about AppBrain is its comprehensive suite of tools designed to help app developers and marketers succeed. These features collectively make AppBrain a valuable resource for app developers and marketers looking to maximize their app's potential. They provide accurate data and a user-friendly interface.