They use their own in-built all store. It works better for me than aurora (based on the state of both a year ago)
Zozano
I suppose it depends on which apps you're trying to grab.
Neat.
I'll also add: after DivestOS died, I got a Pixel to run GrapheneOS.
So I've tried that too, and it's the best by far.
The reason for disliking LineageOS is its dependence on Aurora Store (Google Play mirror).
Maybe it has gotten better over the past year, but it was always quite buggy. Some apps wouldn't install from Aurora, others weren't found, it was a pain in the ass.
/e/OS uses a different app store (which is also a mirror) but tends to work much better.
Are you sure you're not thinking of custom Android ROMs like LineageOS or /e/OS?
Because there are ROMs like Ubuntu Touch, but they're less developed than the other Android ROMs.
For reference, ive tried /e/OS, LineageOS and DivestOS (RIP).
So far I felt like /e/OS was the most polished.
TIL Deathclaw's can develop a foot fetish