"What does this mean? Is it going to link directly to apk and ipa files? I assume you mean Google Play or the iOS App Store here?"
@Legoktm I hope you don't mind, but I moved your question here to better respond. I see your concerns on linking to the stores. Thank you for adding them to the page. As for where we link to - Yes, the stores did seam the most logical to the Portal team. Especially for non-technical folk who are OK with using apps stores.
I though about alternatives to alleviate your concerns. At the moment I can't come up with a good one. I thought maybe having a link to other locations like List of Wikipedia mobile apps? But that only increases the taps to get to the app and that page, in turn, links to the stores. :/
Loading an app outside of the app store in iOS is a pain if not near impossible. I'm not sure there is a way to deploy an .ipa with the number of current Wikipedia mobile app users. I can't speak to the process on Android.
Regardless, if we add a link to the mobile apps, linking anywhere but to the app stores would reduce the amount of people who could actually get the app running, blah, blah, blah. I'm sure you already know this. :)