Tweedle App - Notion is nice but sometimes all you need is an app like Tweedle.
Twidere - Tired of seeing ads and promotions in your timeline, being disrupted by tweets from bots and people...
Plume - App for writing documents, scripts, books and more.
Hyperspace Mastodon client - Hyperspace offers a clean, fast and responsive client for the Mastodon social network
Flamingo for Twitter - Flamingo for Twitter is a bright and colorful Twitter client that comes with a simple interface.
Pinafore - An alternative web client for Mastodon, focused on speed and simplicity.