There are community-extensions for this. "Vault Changelog"recently edited files, and "Recent Files" recently opened files. Not sure how well they work on mobile.
But true, a google keep like tile-view with auto-layout and filters would be a useful enhancement for obsidian.
Could probably do it with obsidian dataview + embeds which would work on android at least. Not sure how they deal with community plugins + app store policy though on iOS.
But true, a google keep like tile-view with auto-layout and filters would be a useful enhancement for obsidian.