I'm a big Mastodon supporter, and I like the idea of SSB but I just couldn't manage the storage/bandwidth/latency costs on my phone. I tried out Manyverse for a few weeks a few years back when my friends were using it but it took XX minutes to sync every time I opened up the app, and posts I saw were always days old and out of date. A very annoying user experience for a mobile application and eventually I just uninstalled it. (It actually reminded me of using Google Keep, another app that regularly locks me out of my notes to do "housekeeping" every few days—at least Manyverse has a good excuse!)