What they do is self explanatory, play audio and reveal translation automatically upon paging.

They should work for both web and App.

These options should be under General.

GENERAL

These options will speed up language learning by reducing time spent pressing buttons.

These options will reduce risk of carpal tunnel injuries and RSI injuries to our fingers by reducing clicks required.

These option means I can complete a chapter faster and go to bed faster, better sleep reduces risk for many diseases like Alzheimer/dementia, it also improves learning of languages.

Faster lesson consumption will reduce phone battery consumption which leads to longer battery life this is good for environment.

The effort to implement this feature is minimal but gives huge improvements to user experience. this will lead to better reviews and massive increase in profit for LingQ.

Edit

Please add also under General