I took a look and don't see any strong reasons not to use and support the official app. Tweetbot was so successful because it was competing against the official client which was (and still is) truly horrible, but I don't see that in this case Ivory has many advantages over the official client.
rpgbr|3 years ago
Anyway, Mastodon has no reason to stand against third party apps. Its official app was released only last year, and by no means to threat others nor become the only app in town. Experimentation is good, and Mastodon's third apps are shining right now. There are dozens of them, each one bringing fresh ideas and new concepts.
edit: typos.
kstrauser|3 years ago