This is great and all but sometimes it isn't just about scheduling.
We at Publer have developed a set of unique features and tools that will take you beyond Mastodon scheduling.
It offers toots, boosts, and thread scheduling for free - as well as analytics to check your journey on the network.
https://publer.io/blog/schedule-mastodon-posts/
The FREE Publer App will let you schedule Mastodon content on the go, and if you use other social media channels, you can schedule posts on them, too!