Because Mastodon is built on open standards, anyone can write an app for it, and there are loads to choose from.
✅ You can find Mastodon apps for Android, iPhone/iPad, Linux, Mac, Windows and more at https://joinmastodon.org/apps
You can of course just use your browser instead if you prefer.
I don't know, I am not a developer. Maybe one of the web apps listed in the link above has what you are looking for?
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