A Safari extension could handle some of it, but Dull also does usage tracking, time limits, quiet hours, and grayscale mode which all need to live at the app level. The filtering itself could be an extension, but the broader goal is reducing how much time you spend there, not just hiding elements. For example we added a feature in today's update that let's you choose what is the intention of opening app. Like if intention is to open DMs then you open just to DMs. Another way of reducing distractions.

Instagram is not predominantly used on Safari, so Safari doesn't sound like the best place to implement something like this.

The use case for this app (Dull):

1. Uninstall Instagram

2. Install Dull

3. Use Instagram via Dull

The use case for a Safari extension:

1. Uninstall Instagram

2. Install the Safari extension

3. Use Instagram via Safari

Am I missing something that is obviously better about Dull (which couldn't be replicated by a Safari extension)?

(P.S. this is not meant to discourage the developer of Dull; I like the idea and your implementation seems really good.)

If someone is already sold on the idea of uninstalling the Instagram app and using something else to access Instagram, how is it better to install a different app, vs. using the already-installed browser, with an extension?

Isn’t this just WebKit with some user scripts anyway?

But this is a web wrapper, same experience but in a container with no further customization allowed