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Released
October 23, 2026
Updated
October 31, 2026

Features

Libellus screenshot #1 for iPhone
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About

Libellus is a notebook. It opens like one, it turns pages like one, and it holds one part of your life per leather tab: school, private, sport, work. **Catch it before it is gone** Write, dictate, photograph the board or scan a handout. A line at the top of the page list becomes homework with a date — "Maths 4.12 by Friday" is enough. The widget, Siri and the Action button start a page from the Home Screen. **Write the way you like** Type, or write by hand with Apple Pencil. A dot in the margin becomes a bullet, a circle becomes a tick box, a star becomes an action you can tick off — in the note and in the homework list at the same time. Draw on a picture or a PDF. Blank, lined or squared paper, per subject. **Find it again** One search across every tab: pages, pictures, tables, formulas and homework. Ask a whole question and Libellus answers from your own notes — and says so when the answer isn't there. It all happens on the device. **School, all the way through** Your timetable, the school's calendar by subscription (Aula, WebUntis, Wilma, itslearning and the rest), flashcards from your own notes, a reading plan before a test, and a recording of the lesson when writing can't keep up. **Maths, physics and chemistry** Write a sum on a line and the answer appears in the margin. Tables with charts and a straight line through the points. A curve from an equation, with crossings, turning points and the area underneath. A formula book that solves for whichever letter you leave empty — area and volume, triangles, percent and growth, motion, energy, heat, pressure, electricity and chemistry. Circuits worked out in full, not just Ohm's law. Reactions balanced and molar masses weighed. Formulas set the way they are printed, with the symbols a tap away. **Yours, and nobody else's** Everything lives in your own iCloud and on every device you sign in on. Nothing is sent to us. Lock a tab with Face ID. **Free and Pro** Free Libellus gives you three tabs and ten AI helps a month. Pro removes both limits and adds the maths, physics and chemistry tools, lesson recording, flashcards, test plans and the year book. Pro is one purchase, not a subscription — and Family Pro covers up to six people. Eleven languages for the app, and your own writing language for dictation, handwriting and text in photos. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://zuluzebrazoftware.com/privacy
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What's New in Libellus

The family notice board

October 31, 2026

The family notice board A new Board tab, there as soon as anybody else is in the circle — a child counts, and everybody in it can pin, take down and tick off. Four shapes: a sticky note to remember, a speech bubble for something said, a thought bubble for an idea offered and not demanded, and a notice everybody must read. The shape is the decision — it is what makes the board readable from across the room — and any of them can carry a picture or a file. "Important" holds a pin at the top for a fortnight and then lets it stop shouting. A pin can be for one person, and "put it on their to-do list" makes it a job on their own, with who asked and who ticked it off. It goes both ways with your book, and it is not a chat, on purpose: nobody waits for a reply, and you read it on the way past. Your week is your own again A child's ordinary school day no longer writes itself across your calendar. It is there when it is out of the ordinary — a trip, a day off, a week on its own timetable, something for the bag — and quiet otherwise. Their own week still holds every lesson. The shopping list, to somebody who hasn't got Libellus Send the list as plain words, by message or mail or anything else that carries text. Only what is still to buy, in the order you walk the shop, and who it is from — for the neighbour who offered, or a grandparent going past anyway. One way, on purpose: a reply is a message, not a tick. School words only where there is school A tab for private things offered to add a "subject". It offers a section now, and says section everywhere else too. And having children no longer makes your own errands homework: a task on that list has no child on it, so your own tabs decide what it is called. The question that gives a page the formula book, tables, curves and circuits is asked in every tab now, as "Calculation tools" outside school. A section called Calculations gets what a maths lesson gets. Find anything, not just your notes Search read your pages and your homework and called it everything. Now it finds the thing itself: the party in the calendar, the milk on the list, a course on a wish list, a child, a subject, a holiday, a tab. Each in its own group, soonest first. A locked tab stays out. The week, on the Home Screen A new calendar widget. Seven days across, today circled, a dot for each thing on. School holidays are blue and your own amber, and a day that is both is drawn half and half — never red and green, so it reads for eyes that cannot tell those apart. And the shopping widget has a microphone: one tap and you are dictating. Ask somebody to an event, and see who is coming Tap an event and there is a guest list on it: who was asked and what they answered — coming, maybe, can't, still to answer — with the count out on the line in the day. "Ask somebody to come" opens your own calendar's invitation sheet, so it reaches people whether or not they have Libellus. You are told when they answer, and if they change their mind. Apple's Calendar says nothing when a reply lands; this reads it. Settings, in eight rooms Twelve sections in one scroll are now eight named rooms: the book, family and children, reading, reminders, language, Apple Intelligence, Pro, about. Everything about the family sits inside one of them — the circle, who is in it, who was invited and never answered, each child and whose phone they are on, what is shared, and the board's switch — instead of spread across Settings, the shopping list and a tab of its own. And the sample of a handwriting sits directly under the picker that chooses it, not four rows below. Calmer along the top

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Subscriptions & In-App Purchases

$7.99

Libelles Pro access

All tabs, all tools, one buy no subscription

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