Advice for newcomers: don’t bother with the official Mastodon apps. Try these instead!

Web: https://elk.zone
iOS/macOS: https://tapbots.com/ivory/
Android: https://tusky.app (haven’t used this one myself, but people seem to mention it a lot)

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Elk

A nimble Mastodon web client

Elk
@jonikorpi tusky is great, can confirm