First of all loving the app and can’t wait to see it in the App Store later this month! It already looks and feels great! Says someone coming from Apollo.
Here is a list of my suggestions:
Add search feature either in top or footer
Add true dark (black) mode when running system darkmode
At overview of posts the upvote on left hand doesn’t work. Isn’t it possible to include the working up/downvotes on left hand side instead of right
When opening a post the top bar with total upvotes, total comments and when posted (eg 4 days ago) seems unnecessary as far as first two since you can see these again below the post and there you can actually press the upvote button. It would make sense to move the posted date there
Upvote/downvote on comments don’t work instead when I press the comment collapses which seems incorrect behavior
See an overview of all my posts in “profile” and be able to see them easily
See an overview of all my comments in profile and be able to see them easily
Make use of iPad layout by adding columns / scale images to 2/3 screen if source allows it