Charts with several curves now draw each family in its own color, with the shifted curve dashed. Practice tests: the test's name reads whole, the paper scrolls once, and a set of several papers is numbered across them.

A chat's thread no longer shows a stray line across the middle. Starting a test from a chat opens it inside the app. The band of chips above a conversation is slimmer, so the question your tutor holds at the top stays readable.

Long chats open and scroll without stalls: the thread and the month calendar no longer rebuild their date formatting on every redraw. An answer's interactive parts now run on the phone itself: controls paint natively and send their changes back to your tutor, and a streamed answer paints as it arrives, with its plan and sections.

Answers from Lucrux draw their pieces as the web does: items arrive as cards, three across when they fit and one column on the phone, each with its picture and a View link to its page; a table shows its sources as chips under its caption; an ask card puts its action on its button; a figure that could not be drawn reads as its caption line. The phone alerts and school mail sheets are tidier: the closing actions share one row, Change number and Remove number sit on one line, and the forward's counts live inside the receipt. School mail tells the truth about the forward: “One step left in your school email” when Google verified the forward and no mail has arrived yet, “No mail has arrived since …” when it has gone quiet, and “Check now” runs a check.

Lucrux's answers arrive whole: day and class cards open their screens with a tap, practice tests sit where the answer places them, pictures open full screen, and every answer takes a thumbs up or down. Sign in with a code instead of a password. Setting up a class is quicker: connect your school's calendar first, say how each class is held, and confirm exam and assignment dates in one sheet; a date that is only an estimate shows a ~. Your household's plan shows on the household screen. Plus fixes and speed.

Record a class from the composer: the strip shows where the recording stands, and the notebook knows a class is being recorded. A test question's figures draw large: lettered panels in a grid, a plane at its box's width, type that scales with the drawing. A class reminder rings only on the course owner's own device. Plus fixes and speed.

Record a class. Start a recording from the notebook page you are writing on, or straight from the chat. Live captions appear while the class is spoken, the Lock Screen and Dynamic Island show the recording running — with buttons to mark a moment, flag what lost you, or stop — and it keeps recording when you lock the iPad or leave the app. When the class ends it becomes study material you can work through. Images and photos load faster — they now arrive from a server near you. Also in this release: create your account from the first screen with Google, Microsoft or Apple. A setup indicator on the chat says where your household stands, and the app opens where you left it. Class materials show whether they come from the class or from you. A function's graph draws the way a test paper draws it, and a question's figure sits under its stem. The paywall shows this month's credits and what the plan includes. Parents see the student's setup named for them. Plus fixes and speed.

Create your account from the first screen with Google, Microsoft or Apple. A setup indicator on the chat says where your household stands, and the app opens where you left it. Class materials show whether they come from the class or from you. A function's graph draws the way a test paper draws it, and a question's figure sits under its stem. The paywall shows this month's credits and what the plan includes. Parents see the student's setup named for them. Plus fixes and speed.

Lucrux now lives at lucrux.ai, with a new look for your tutor. New diagram type: flow and cycle charts drawn from your material. Brand refresh throughout the app.

ableU is now Lucrux. Same tutor, same household, new name.