ultimate-guitar.com is a big offender. The mobile site jams lots of things in your face to and get you to download the app (including an entire fake tab page that you can't interact with but can scroll past on iOS devices). Then on the mobile site you can't tap on any of the chords to see the fingerings (very important!).
You can if you choose to request the desktop site, but then you get an obnoxious bar going across the middle of the page blocking some of the tab.
If you fold and finally download the app, you're greeted with a 10+ page unskippable questionnaire that after you're done ends with a paid subscription call to action. If you then force close the app, and open a tab link from the browser into the app, you are finally allowed to view a tab.
You can if you choose to request the desktop site, but then you get an obnoxious bar going across the middle of the page blocking some of the tab.
If you fold and finally download the app, you're greeted with a 10+ page unskippable questionnaire that after you're done ends with a paid subscription call to action. If you then force close the app, and open a tab link from the browser into the app, you are finally allowed to view a tab.