First of all, I strongly disagree that my question was "very judgemental" and my point of view seem to be supported by both the comment upvotes and the other comments (it suggests you're taking things a little too personally).
In this case, you describe a specific problem, the problem has an IMHO obvious solution, but for some reason you don't want to or are not able to opt for that solution. There may of course be a reason for why you can't ask fellow passengers where the train is going, but as I also pointed out in my comments: If you don't explain why this solution is not an option, it is hard to give you any help, since it is not unlikely that the issue may apply to other solutions as well, e.g. a language barrier.
It is also not clear (and IMHO relevant) why you need an app to be part of the solutions you are looking for. Working as a "problem solver" (to use a very generic label for my occupation), I am often confronted with people looking for a solution to a problem, where they have already tried to deal with the problem themselves and eventually gotten stuck in a dead-end road. Unless there is a good reason for going towards the dead-end road, it might have been better trying to look for a completely different solution. To relate this to your question: Even if you think it might be a good idea to use an app to solve your problem, it might be completely different solutions available suitable for solving your problem and be within the constraints of your abilities. To stay within the realm of your question: If you don't want to disturb fellow passengers and there is no conductor on board, many trains (at least in Germany) have one or more intercoms in each carriage allowing you to contact the train driver. This could have been a feasible solution to your problem without using an app or internet access.
What I also often experience is that people think they have a specific problem, which they actually don't. I am now generalizing and not relating this to your question, but it is often important also to know why someone have a problem. Often, the circumstances leading to the problem are misinterpreted, people think they have a problem and try to find a solution by heading in the wrong direction as pointed out in the last paragraph.
To boil this down to a few points ... My experience is, that to give a good answer to a question or to help with a problem, the circumstances around the problem must be known:
- Why is there a problem?
- What is the problem?
- Which constraints or limitations apply to a potential solution?
This, as opposed to your question, which in fact only contains the following information:
- What is the problem?
- How can I solve the problem using partial solution X (using an app)?
To clarify even further, I could use your style of questioning applied to a different situation and perhaps make it more obvious how to improve the question and why answering such a question is very difficult:
I am standing in a Belgian grocery store and I am thirsty. I do have
connection to the internet. Does a website or app exist that allows me
to order a bottle of coke and have it delivered here, so that I can quench my thirst?
I know that similar services are offered for food. There you can
simply order a pizza and it will be delivered to your location. I am
wondering if a similar service exists for lemonade or soda.
This fictional question follows exactly the same pattern as your question:
- The problem is described ("I am thirsty").
- A partial solution is suggested ("I want to order something to drink and have it delivered") and the questioner expects someone to suggest a refinement to this solution, so that it can be used to solve the problem.
It would however been much easier to find a solution if the question contained more details:
Why is there a problem? Being thirsty in itself is not necessarily a problem, it is only a problem if you don't have anything to drink. Without knowing this detail, it could have been assumed that the questioner carries a backpack with a bottle of water and could have drunk the water to solve the problem. This may of course seem obvious, but only as obvious as it is to me to ask fellow passengers if I am on a train and not being sure where the train is going.
Which constraints or limitations apply to a potential solution? In this fictional "I am thirsty" scenario, the most obvious solution would of course have been to buy something to drink in the grocery store. Even here though, there might of course be circumstances making such a solution impossible. If you've just arrived from the airport flying in from somewhere, don't have local currency and the grocery store won't accept your credit card, you may of course have a good reason not being able to simply buy something to drink. In this case, the same limitations do however apply to the partial solutions suggested by the questioner. If you don't have local currency, it is not unlikely that you are not able to order something to drink and have it delivered either. Also in this case, it is important to know how and why any possible solutions are not applicable.
Hopefully this explains my criticism better. It is hard to elaborate much with the limited number of characters in the comment field.