Beta readers vs. ARC readers: different tools, different timing
Beta readers read your manuscript before the final draft. Their job is to help you find and fix problems before the book is locked. ARC readers receive the final edited book before publication and post honest reviews. The timing difference is everything: beta feedback shapes the book; ARC feedback shapes the launch. If you send an unfinished, unedited manuscript to ARC readers expecting reviews, you will get reviews that mention the problems beta readers should have caught first.