We're happy to announce that Matterlist for iPhone is now available on Apple App Store! The app includes all major features, including Reminders and automatic Contexts (such as Location), and comes with Sign In With Apple support.
Here's the App Store page: https://apps.apple.com/us/app/matterlist/id1362503031?ls=1
Also, we lowered the subscription price from $5 to $2.49 per month! The new price is already in effect on the iPhone app, and the Android app is soon to follow.