While it would be cool to make a mobile app for this, having used both the tech stack behind this site (it's open source, and really great), and written a mobile app with a similar tech stack, $100k will get you one, but it's going to be a pain to debug all the various niggles around various devices, so you'll need at least double that to make a robust one (and then the question is, do you just go native and reimplement that tech stack).
Im not typically this person, but hacker news is just more and more "allow me to tell you", buddy I have 20 years experience building mobile apps... including against scientific, open source, and plain old hack-AF platforms...
I mean, if you think you can do it for $100k, I would say that it should be possible to apply for (and get) an outreach grant and build it (probably better to try in the EU, given the current cuts to science in the US). Or maybe contact one of the major missions and show a plan of how you'd do it?
