I have no background or knowledge on this. I would like to make an app for performance engine building that has various pages with various formulas, unit conversions, tool lists, etc. What program do I use to make an app? I’ve seen Surge, Bevy, and Godot but those seem to be for games.
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As far as I’m aware, Samsung or Amazon are the only other real app “marketplaces”. Most developers using Fdroid otherwise rely on donations or patreon for active development, depending on the nature of the app