I really don't care what anyone says, things like SimplyPlural, Octocon, Pluralkit, and any other similar app/device for systems are accessibility tools.
There's this weird internalized ableism in the community (especially with non-physically disabled systems) who view these ways as being too much or "taking up space" in some aspects.
"Oh I can't have all my friends download this just to know who's fronting," if it helps you then it shouldn't be a problem for your friends. "I have other methods to track switches," well if this is the easiest way for you to do that then that's okay. "DID/OSDD doesn't need accomodations like other mental illnesses/disabilities," but it does and if meeting those accommodations helps you function better, then it's an accessibility tool.
For some people I understand it's not much of an accessibility tool, sometimes when it conflicts with other disabilities. I saw once someone say that the way Pluralkit and Tupperbox work on Discord causes a sort of flashing problem with how it replaces messages, and this can be a lot in large servers with multiple people using it. I get that and similar complaints. Something should either be done to fix it or (unfortunately) have one of two groups suffer from the use or loss of it.
Downloading a small app to know who is fronting, however, is not a big ask for friends or staff whose job is to care for you. I have all my trusted friends download SimplyPlural. It wasn't that hard to set up so they can get notifications of us switching. I did this because to us it is an accessibility tool. We cannot function properly without it.
Our switches can be erratic and very fluid, and it makes day to day living hard. With these apps, we can not only track who is fronting, but also it literally makes us feel better. I feel like a blurry mess without it, headaches galore, unable to untangle thoughts and feelings the longer I go without it. When we use it, our communication is literally better with it. We can track events and things better in our lives with it. It makes living in a world not made for us easier to handle.
It's also important to our identities. Snails is not ghost, ghost is not Rocky, and we will not be treated as the same person simply for living in the same body. It's upsetting and makes us feel like we purposely have to hide parts of ourselves, resorting back to masking around our own peers. We hate that.
If it doesn't work for you, if it's too much and complicated for your own use, if it conflicts with other disabilities or issues you face, that's fine to not call it an accessibility tool for yourself.
But these are my accessibility tools just as much as our crutches or other mobility aids are. This world was not made for systems, and there is no time soon of that changing. There are other ways of doing this without an app or online tool, I understand, and I have implemented that too. But this is what works easiest for me, and if I don't have that accessibility then it is literally harder for us to live our own lives.