These are Mastodon apps still on the App Store but without any updates in more than a year.
B4X for Pleroma & Mastodon by Anywhere Software
Free on the App Store. B4X project on Github
Quirks: In-app browser login. Hasn't been updated since 2021.
Free on the App Store
Quirks: No obvious way to remove an account. Like Ivory, has profile tab in the center and search on the far right. Rounded square avatars. Hasn't been updated since March 2021.
Free on the App Store
Features: cool name
Quirks: Unable to get past the instance entry page. Hasn't been updated since 2018.
Free on the App Store
Features: Advertised to be compatible with Pleroma and other ActivityPub services.
Quirks: Hasn't been updated since 2019. Website roma.rocks is gone.
Tootle by @[email protected]
Free on the App Store.
Quirks: Hasn't been updated since 2020.