F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
Some software developers prefer to host their own repos and have more control over the release process and/or don’t want to fill all the criteria for being included on f-droid, so they create their own repos. Some of these apps can still be found on vanilla fdroid, but often aren’t updated so frequently.
Izzyondroid, on the other hand, is a different project, aimed at hosting different apps that are usually from smaller devs and can’t be included on fdroid yet, for different reasons.
The greatest thing about fdroid is that it allows anyone to create their own repos and you aren’t forced to depend on anyone.
Some software developers prefer to host their own repos and have more control over the release process and/or don’t want to fill all the criteria for being included on f-droid, so they create their own repos. Some of these apps can still be found on vanilla fdroid, but often aren’t updated so frequently.
Izzyondroid, on the other hand, is a different project, aimed at hosting different apps that are usually from smaller devs and can’t be included on fdroid yet, for different reasons.
The greatest thing about fdroid is that it allows anyone to create their own repos and you aren’t forced to depend on anyone.