When comparing Twidere vs TweetCaster, the Slant community recommends Twidere for most people. In the question“What are the best Twitter clients for Android?” Twidere is ranked 6th while TweetCaster is ranked 13th.
Ranked in these QuestionsQuestion Ranking
Pro Modern UI
Pro Free software/open source
The source code is available under the GPLv3.
Pro Very customizable
The user can add and arrange his/her own tabs with specific views and filters.
Pro Supports custom API
It supports API customization, so you don't need to worry about API limits at all.
Pro Works as expected
Pro Handles Mastodon, Fanfou and StatusNet too
You need only one app to read Twitter and Mastodon.
Pro Multiple user support
Allows for easy switching between different Twitter accounts within the app.
Pro Zip (hide/filter) tweets
You can hide boring or inappropriate tweets by person, app, or hashtag for a selected period of time. Very useful when your followed friend starts to tweet about every single moment of a F1 race.
Pro Stagger tweets
You can write multiple tweets in one sitting and have them appear one by one at a predefined time.
TweetCaster shows statistics about you and your friends. Who you interact with most, who is the "top tweeter".
Pro Themes & cutomization
Tweetcaster has multiple looks to choose from. In addition to themes, you can also customize the color of tweets where you're mentioned and font.