What is the best way to track prices in the App Store?

I'm looking for an improved app or service that lets me set deal alerts for price drops on a wish list of apps I keep. Bonus points for being able to add apps on iOS, either with a native app or using Workflow.

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App Shopper

AppShopper.com has been my go-to for at least the past 3 years, if not longer. You can create a wish list and receive an email alert when there's a price reduction. The site will let you track prices for both MacOS and iOS apps.
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Cheap Charts

Use it primarily for movies but it does everything.
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