No, reputable Private Instagram Viewer Apps don't require your credentials, ensuring the security of your account. Are there any limitations to profile viewing?

Almost everything you have ever heard about private Insta viewers really works: they allow you to view profiles, save and download content, and they guarantee anonymity.

Has it ever happened to you that someone has blocked you, and you are not able to see their profile picture? So don't worry; you can easily view anyone's private Instagram profile with Instalooker.

If you want to view Instagram account posts or stories without logging in, you can use free private Instagram Viewers like Dumpor, Imginn, Inflact, etc.

How to Change an Instagram Profile From Private to Public. Instagram profiles can be viewed on the Instagram app for mobile devices and on the Web, but what others see depends on the setting for ...

You can make your Instagram profile Private or Public on the web and mobile using this guide. Useful if you want only followers to view your content.

Others, like the Instagram Private Profile Viewer 2018, say they have built "a device" that will do the job.