Is there any proprietary Android app for which you wish there would be an open-source alternative?
Basically, what the title says. Do you use any app, that is proprietary, but either has no OSS alternatives or they're all not good enough? If there is an alternative, what keeps you from switching?
Honestly, Google Keep notes. Trilium server runs as a UWA on Android but it's pretty ass. And things like Obsidian are way too much for something me and my (non-technical) SO use to share notes