This scheduler embeds many features, like autocomplete for tags, mentions and custom emojis. You also have an emoji picker and you can create polls.
Last one important feature, you can edit your media.
You also have an entry that lists all your scheduled messages (you can remove them).
You can host it on your own server otherwise it's here https://plan.fedilab.app
the page is currently unavailable :/
Weird, that works on my end.
it works now on my end too.
A friendly instance about tech, apps and for having fun.