Tasks | Projects | Notes | Chat | AI

Everything your projects need, in one calm place.

Idus brings your tasks, projects and notes together, adds a group chat for the people you work with, and a built-in AI assistant, @Idus, that helps you run it all. On your phone and on the web, always in sync.

FreeWith no limits

Almost every feature, on your phone: unlimited projects, tasks and notes. No time limit, no card.

See how Idus compares

Why Idus

A free version that is the real app, not a sample.

Many notes and tasks apps give you a taste for free, then charge for the rest, often per person. On Idus, the phone app is free with almost every feature, and one paid plan adds the extras.

Free: the phone app

Idus phone app, freeOther apps, free plans
ProjectsUnlimitedOften 5 to 10 on the free plan
NotesUnlimitedSometimes capped, as low as 50
TasksUnlimitedSometimes capped, about 100 per list
How long it is freeNo time limitSome are only a trial
Sync and backupIncludedSometimes paid, or one device only
Calendar view and remindersIncludedCalendar view often paid
A map of each projectIncludedRarely offered

Paid plan

Idus paid planOther apps, paid plans
Price$5 a month, or $48 a yearAbout $3 to $10 a month, per person
AI assistantIncluded in the priceOften a higher plan or an add-on, $9 to $20 a month per person
People you inviteJoin free, on their phoneTeam plans usually charge each person
A project for 5 people$5 a month in allAbout $35 to $50 a month in all
Chat inside each projectIncludedUsually comments only
Notebooks with pages that turnIncludedRarely offered
A summary of your day, every morningWritten by @IdusRarely offered
On your computer and the webIncludedIncluded

One place

Stop juggling three apps.

A task app here, a notes app there, a chat somewhere else, and nothing connects. Idus keeps all of it side by side, so the plan, the notes and the conversation never lose each other.

01 / Projects

A project that breaks itself into steps you can finish.

Give a project its steps, put the tasks inside them, and the work stops being a list and becomes a plan. Every task wears how urgent it is as a ring in a colour you chose, so the page tells you where to look before you have read a word of it.

  • Numbered steps that count themselves, here 1 of 3 and 0 of 3.
  • List, board or map, the three buttons at the top, the same project each way.
  • Drag anything anywhere, one row or a whole run of them at once.
Semester project
A project in Idus with three numbered steps and its tasks, each carrying an urgency ring and a deadline.
02 / Calendar

Every deadline you have, on one month.

Tasks from every project land here by themselves, as a dot under the day in the colour of their urgency. Drag one to another day and the deadline moves with it. The week starts on whichever day your week starts on.

  • One press opens a day and shows everything due on it.
  • Deadlines and repetitions, shown or hidden from the legend at the top.
  • Subscribe from any calendar app and read it there too.
Calendar
A month in the Idus calendar, today ringed in blue, deadline dots under the days in yellow, orange and red.
03 / Goals

The bigger things, kept where you can see them.

Goals are not tasks and Idus does not pretend they are. They sit in categories you name, and carry how much they matter in the same three colours the rest of the app uses.

  • Your own categories, renamed and reordered whenever you like.
  • Importance in three colours, so what matters most stands out first.
  • Hand one to @Idus and get a project with the steps already in it.
Goals
Goals in Idus, grouped into categories, each carrying its importance.
04 / Notes

Notes that hold more than words.

The editing bar across the top is the whole of it: bold, italic, underline, strikethrough, code, colour, two heading levels. Under the words, checklists that count themselves and real tables you can sort and add rows to.

  • A real table that travels into a downloaded document as a table.
  • Keep one floating on top while you work elsewhere in the app.
  • Folders, and a note tagged onto a task or onto a whole step.
Sources to read
A note open in Idus, with the editing bar, a checklist and a real table.
05 / Notebooks

Notes, and notebooks for a more immersive read.

Any note becomes a notebook from its own menu, and the writing falls onto A5 pages that turn, with a cover on the shelf and a page number at the foot. Every line stands on the ruling, whatever it is: a heading, a bullet, a tick box, a quotation, a row of a table.

  • Pages that turn, two at a time on a wide screen, one at a time on a phone.
  • Five papers and eight covers, so a shelf of them is told apart at a glance.
  • The whole book as a PDF, two A5 pages to an A4 sheet, exactly the pages you read.
Lab notebook, pages 1 and 2
The Idus notebooks shelf with five covers, and one notebook open on two facing ruled pages carrying headings, lists, tick boxes and quotations.
06 / Chats

The conversation, inside the project it is about.

Share a project and a group chat opens inside it, next to the tasks, so nobody has to say which project they mean. Reply to one message in particular, pin what matters, send files, and call @Idus in when the group needs to know what is actually due.

  • @Idus is in the room, answering from the project's own tasks and deadlines.
  • Reply to a message, and the one you answered rides above yours.
  • Files, pictures and PDFs, read inside the chat without downloading them.
Semester project, Messages
The group chat inside a shared Idus project, with a reply quoting the message it answers and @Idus listing what is due.
07 / @Idus

An assistant that does the work, not just the talking.

Ask it to plan the write-up and it writes the steps and the tasks, and puts the deadlines where they belong. Paste in an email or a document and ask for a project, and you get one. Ask it to summarise a note and the summary goes into the note, exactly where you asked for it, without touching a word that was already there.

  • On every screen, on a button you can pin or put away.
  • It answers in your language, whichever of the four you are reading.
  • Or bring your own, and reach Idus from your own AI assistant instead.
@Idus, answering
The Idus assistant panel, asked to plan the write-up, answering that it has put three steps and seven tasks into the project.

Your style

Six looks, and none of them a compromise.

Idus follows your system theme, or commits to the one you prefer: two greys for people who find pure black harsh, a warm paper-and-coffee beige, and a greyscale for anybody who wants no colour at all. The urgency colours have their own sets on top, including one with no colour in it.

Light Crisp and clear
Dark Easy on the eyes
Graphite Slate grey, ember accent
Slate blue The same greys, deep blue
Beige Warm, vintage paper
Greyscale No colour at all

On the road ahead

Idus keeps getting better.

A taste of what we are building next, already on the drawing board.

Talk to Idus

Capture notes and give the @Idus assistant instructions with your voice, hands free.

See your consistency

A map under the Calendar that shows how steadily you finish what you start, day after day: the more you do, the deeper the blue.

Habits that keep themselves

A task that comes back every week already works. Next comes the streak behind it: how many weeks running you have kept it, and a gentle word from @Idus on the week you are about to break one.

Simple pricing

Free on your phone. Subscribe for the Additional Features and a workspace in your browser.

Free

$0

The phone app, free, with no limits.

On your phone

  • Unlimited projects, tasks and notes
  • Notes and checklists
  • Goals, calendar and reminders
  • Map and column views, folders, themes
  • Sync between your devices
  • Export everything, any time
  • Join projects people share with you
Get the app

Monthly

$5/month

7 free days, whenever you choose. No card. Cancel any time.

Everything in Free, plus

  • The web appAll of Idus on a big screen, at idusapp.com.
  • @Idus, your assistantTurns a paragraph into a project. Writes and edits your notes.
  • Share your projectsInvite people, chat inside the project, comment on the map.
  • Attach filesDocuments, pictures and links. PDF and DOCX files open in the app.
  • NotebooksPages that turn, with chapters and a contents page.
  • The daily summaryEvery morning, @Idus reads what is due today and tomorrow and writes it for you.
Try 7 days free
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Yearly

$48/year

7 free days, whenever you choose. No card. Two months free.

Everything in Monthly

  • The same six thingsPaid once a year instead of every month.
  • $4 a month, not $5$48 a year instead of $60.
  • 14 days to change your mindFull refund, no questions asked.
Try 7 days free

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