When is it really necessary to create a mobile app? Could it be a website or online tool just enough? Making a Whatsapp number or group available can do the trick in many cases.
Creating a mobile app today is not just a technical matter about platforms. It actually has become quite easier to create and deploy something, and there are many tools available that allow virtually anyone to do the job. But as the app stores get bloated with so many different (or not) tools and widgets, the question becomes whether they are actually relevant.