This just highlights the problem with most apps out there, which is that there is no need for those apps. The time taken to find, install and learn how to use them outweighs the time saved by using them compared to a regular website … even assuming that they do save any time compared to a regular website.
If I have an immediate need for a service, the chances are that I am not going to want to download an app for it, even assuming that I find one, because that takes time and often a large chunk of data, and I might not be on wi-fi when I want it. Google is far more readily available, and a regular website will work on all platforms. If you’re worried that people will forget about your app because they aren’t using it very often, maybe that’s a clue that there is no real market for your app in the first place.