There's bacan reader, it's meant to be really acccessible. I've tryed it but ended up deleting it. I prefer the website.

BaconReader is your best bet for a VO compatible app. I gave them a ton of accessibility feedback and they've actually spent time working on it all and the current beta and production release are very accessible. I love going through posts in Grid mode since I can just swipe directly from one post to the next without having to go through all the upvote, downvote, subreddit and author elements.

The official reddit app works okay for me, with the exception that it reads elements under your finger but swiping left to right to cycle through objects doesn’t work; instead I need to use 3 finger scroll to continue down the timeline, then read under finger again