Capture, annotate and record the screen, on GNOME. This is where its Flatpak comes from and updates from. The app, its guide and its source are at https://github.com/odrakirmusic/OctoSnap.
flatpak install --user https://odrakirmusic.github.io/OctoSnap/io.github.odrakirmusic.OctoSnap.flatpakref
Or open io.github.odrakirmusic.OctoSnap.flatpakref in a software centre that installs Flatpaks. The runtime, GNOME 50, comes from Flathub.
Software, flatpak update and OctoSnap's own Settings all update it from here.
A copy installed from a release's .flatpak file of 0.1.8 or older updates
from nowhere; uninstall it first, which keeps your settings and history, then install it as
above.
Every release here is signed, and Flatpak installs nothing the key did not sign.
Its fingerprint is BBCF EEBF BF63 B258 12FC D90E AB14 542B C463 67A7, and the key itself is
octosnap.gpg.
OctoSnap 0.1.16 is the newest release here.