InAppBrowser.com includes this tool. You have to open the app you want to check and share its InAppBrowser.com URL. For instance, you can directly message its link to your friend or post a comment. Tapping the link, you can get a report on the scripts running on the app background from the website.
Tool’s developer, Felix Krause, offers a few FAQs explaining unfamiliar tech jargon, helping us know exactly what we are seeing. He describes the best ways to protect your privacy by saying, “Whenever you open a link from any app, see if the app offers a way to open the currently shown website in your default browser. During this analysis, every app besides TikTok offered a way to do this.”
The security researcher and former Google employee Krause revealed a detailed report earlier this month on how in-app browsers like Facebook, Instagram, and TikTok, pose privacy risks for iOS users.
Meta responded to Krause’s report, justifying their user tracking policies, that apps like Facebook and Instagram already have their users; consent for tracking their data. Also, Meta explains that it collects user data for target advertisements or unspecified “measurement purposes.”
As told by a Meta spokesperson, “We intentionally developed this code to honor people’s choices on our platforms. The code allows us to aggregate user data before using it for targeted advertising or measurement purposes.” Further, “For purchases made through the in-app browser, we seek user consent to save payment information for the purposes of autofill.”
Krause stated, “InAppBrowser.com is designed for everybody to verify for themselves what apps are doing inside their in-app browsers. I have decided to open source the code used for this analysis, you can check it out on GitHub. This allows the community to update and improve this script over time.”