Twitter begins rolling out Twitter Shops in beta, letting users link to up to 50 items from their profiles, to select US merchants on iOS (Chaim Gartenberg/The Verge)

Substack launches an iOS app for reading; Android users can sign up for a waiting list — What you read matters — Today, we’re launching an iOS app for reading. It’s like your email inbox, but better. — For readers, the app brings all your Substack subscriptions together in one venue …