jacobian.news
Two ways to reach us: shake the phone while the app is open, or email. Both land in front of the person who wrote the code.
contact: contact@brandonbarker.me
During the beta, shake the device anywhere in the app. Jacobian composes a bug report for you to review and send; nothing goes out without your say-so. If shaking feels undignified, email works too: include your iOS version and what you were doing when it broke.
Jacobian is built on Liquid Glass and modern Swift, the parts of the OS that make it feel native rather than ported. Supporting older releases would mean maintaining a second, worse app inside the first one. We chose to make one good app.
Go to the Account tab and enter your Hacker News username and password. Credentials are stored in the iOS Keychain on your device and sent only to news.ycombinator.com over HTTPS. Details on the privacy page.
On your Hacker News account, where they always have. Jacobian is a client, not a silo: anything you vote, favorite, or submit in the app shows up on news.ycombinator.com and in any other client you use.
Shake the device while the app is open and a report composer appears. You review it, you send it. Or email contact@brandonbarker.me directly.
Yes, free during the TestFlight beta. There is a tip jar in the app for people who like tipping. It buys nothing except the warm feeling.
The Jacobian is the matrix of partial derivatives, which is why the icon is a ∂. There is also a ∇ icon for the gradient enthusiasts. That is the whole joke, told once.