Quiet Digest turns the articles, newsletters and YouTube videos you save during the day into one calm EPUB, delivered to your Kindle at the hour you pick. Each piece is stripped of ads, pop-ups and sidebars and rewritten for an e-ink screen. Videos come back as text. Every issue has a dated cover, a contents page with reading times, and a closing page with one line worth keeping from each piece. Free: a weekly issue. Pro: daily delivery and YouTube.