Awesome app. It is somehow not listed on android-foss list so maybe someone didn’t know about it.
Obtainium allows you to install and update Open-Source Apps directly from their releases pages, and receive notifications when new releases are made available.
GitHub page: Link.
Yes, Obtanium notifies me there is a new update shortly after it’s uploaded to GitHub. Then I just have to click update and it updates. Super simple and helpful.