1) There was an update to the UrzaGatherer android-app a couple days ago which seems to have changed the app from a "standalone app" to a "web app", apparently using the device's default-browser to serve the website.
2) In one sense this is good, because I think it means the dev can save time by not having to push frequent updates to the app through the Play Store.
3) However, it has the negative side-effect of causing an address-bar to appear at the top of the screen, which cuts away from the already small amount of screen real-estate.
4) I tried 18 browsers in total, searching for ones that lets you add UrzaGatherer as a web-app through its "Add to homescreen" function, without causing that address-bar to show up. Of those 18, I found three that let you add a homescreen-shortcut/"app" for the site without showing that address-bar. (there's possibly a couple others which were missed due to complication I discovered later [see below], but 'tis fine)
Of those three browsers, there are two "types":
1) A browser which lets you add "homescreen shortcuts" to websites, but ONLY if you run the "add to homescreen" function prior to the website's "notifying the browser of its associated app" -- after that point, the browser will replace "add to homescreen" with an "install app" function (which is not what we want since that adds the address-bar). So for these sites, you need to clear the cookies/site-data (if already loaded), refresh the page, then "add to homescreen" before the site can supply its "install app" information.
2) A browser which lets you add "homescreen shortcuts" at any point, even after the site has supplied its associated "install app" information.
For type 1, there are two options: Chrome, Vivaldi
For type 2, there is one option: Aloha
Type 2 is preferred of course, but Aloha has two drawbacks:
1) It's not a mainstream browser (so you might not want to install it).
2) It pops up a small elipsis-icon on shortcut open, lasting a few seconds (or until swiped down).
So then, I actually prefer just using the regular Chrome browser -- using the procedure above (clear cookies/site-data [by clicking the "lock" icon in the address-bar], refresh page, then quickly "add to homescreen"). This quick-adding has a drawback of meaning the site's icon is not loaded yet, so the homescreen-shortcut is just a gray background with "U" on it. (though if you're using Nova Launcher, you can long-press that icon and change it back to the regular one, which is what I've done)
All that said, one might think that I have gone overboard in my searching for a way to merely avoid the display of an unneeded address-bar. But it's important, and here's why:
* When you have a deck open, and you are trying to filter the cards by some rules-text, that filter-box only fits on the screen when that address-bar is avoided (you also have to tilt the phone horizontally -- but that is okay); when the address-bar is there, there is literally no way to use the full-text filtering for a deck's mainboard cards (which is a function I use very regularly).
The above is from a message I sent to a friend, explaining how to work-around the issue of the address-bar showing in UrzaGatherer, from a recent update.
As described, I have found a way to workaround the issue by using Chrome's "Add to homescreen" function rather than using the official UrzaGatherer app from the Play Store.
That said, I have reposted it here...
1) In case the developer knows (or can find) some way to avoid the space-hogging address-bar. 2) In case the developer is unaware of the issue where the "advanced filter options" are only barely fitting on-screen for some phones, requiring a workaround of: switch to landscape mode, expand advanced-options, enter filter settings, flip back to vertical (so there's space to see the cards). [and even this only works when avoiding the address-bar, as described above]
Not sure what the ideal solution for point 2 is here -- maybe having the "advanced options" expand-button instead show a "scrollable popup window" when it detects that there's not enough space to display the filter-options "above the cards-grid".