Fossify has forked the entire suite of Simple Mobile Tools after the original was acquired by ZipoApps, known for acquiring existing apps and bloating them with ads, subscriptions, etc. (Their TrustPilot reviews are an interesting mix of 5-stars from devs who sold them their apps, and 1-stars from customers complaining about unauthorized charges.)
The forked apps are starting to make their way into F-Droid - so far the calendar, file manager and gallery.
