Calendro app icon
The month, drawn as a ring

Your month is a circle, not a grid.

Days sit around the month. A colour means a note. Birthdays take a second ring, with initials on the date they belong to.

Calendro month ring for August 2026 with coloured days and 27 notes in the centre

A grid tells you where a day sits in a table. The ring tells you where it sits in your month — how far behind today, how close to what is coming.

Give a note a colour and you stop reading lists. One look at August is enough.

A day, then a note

Tap a day in the ring. Leave what is happening.

The day sheet lists everything on that date. Add a note with a time, a reminder bell, a repeat, and a colour from the row underneath.

Calendro day sheet for Thursday the 13th with a Dentist note at 08:00 and a colour picker

The day

Thursday the 13th opens as a sheet: the notes for that date, a colour you pick, and a place to add another.

Calendro note field asking What's happening, with time, reminder, and repeat

The note

The field asks What's happening? Set a time, turn the bell on, repeat it if it comes back. That is the whole form.

Birthdays

A second ring for the people you keep.

Switch to the cake and the month fills with initials — MC, EV, JP — sitting on their dates. The centre tells you how many birthdays this month, before you have to remember.

Calendro birthday ring with friends' initials on their dates and 5 birthdays this month

People

Add someone once. The date keeps them.

A name and a birthday are enough. Turn Birthday reminder on, and the day finds you.

Calendro day sheet showing Jonah Park turning 35 on 19 August

The day

Open the date and you see who it belongs to — Jonah Park, Turns 35 — without hunting through a list.

Calendro Add friend sheet with a name field, birthday picker, and reminder toggle

Add a friend

Friend's name, a birthday picker, and a reminder toggle. Press Add friend. They take their place on the ring.

Yours

Dark or Light, in the language you use.

Choose Dark or Light, keep Haptics on or off, and set the language. Connect Apple Calendar or Google Calendar so timed events arrive as notes, and your notes go back.

Calendro Settings with Dark or Light, Haptics, language, and Apple and Google Calendar

How it stays calm

One ring. Nowhere to get lost.

One view

There is no day, week, month, and agenda to switch between. The ring is the whole calendar.

Colour instead of text

Ten colours on the day sheet do the work a wall of titles usually does. You read the month before you read a word.

Only what a note needs

What is happening, a time, a bell, a repeat. No fields you will never fill in.

Calendro app icon

The month is already turning.

Calendro is on iPhone. Free to start, no account needed.