Calendar 366 User Reviews

What users say

Top reviews

Include vertical scroll and weather

All I need now Include vertical scroll and weather to give this a 5star rating. Will gladly pay another 1 TIME fee for that

Thanks for updating app for 2026!

I love this app because it allows you to share .ics calendar appointments via email with other users, without having to use iCloud. It also has the best combined monthly/daily-list view too, and no subscription is required!

Note for developer: Realizing it’s a lot of work to keep updating an app without receiving subscription fees, I want to say thanks. In the future I’m sure they’re many existing users that would gladly pay another one-time fee for important updates. :)
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PLEASE UPDATE FOR iOS 26!!!

Used to be a great 5–Star app, which I’ve been using for years now. However, it desperately needs to be updated for iOS 26 because I’m having serious problems with unwanted time zone shifts on appointments and lack of liquid display support. I put in a support request to the developer, but I never received a response back, so that’s why I posted this downgraded review. Please update this app so I can change my rating back to 5-Stars. Thanks!
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Become buggy.

Update: Over time bugs emerging. Reported to developer but no fixes, no reply so maybe now abandoned? Bugs are getting annoying.
Reduced rating.
I've been through quite a few calendar apps and always had to switch back to Apple's built in calendar. I don't find Apple's iOS calendar very useful (poor use of limited screen space, limited view options, etc.)

Calendar 366 ticks all the "Pros" and none of the "Cons".
1. It works (nor all paid for competitors do)

2. Battery and network efficient.

3. Very customisable views - easy to tweak.

4. Good use of limited screen space on iPhone

5. Lots of different views

etc.
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Meh

I purchased Calendar 366 after Fantastical went subscription. Initially it was a good choice. However, in the ensuing years, the developer has become less and less responsive, and innovation and support have waned. Moving on to another calendar tool.

Include vertical scroll and weather

All I need now Include vertical scroll and weather to give this a 5star rating

Awesome Calendar

The app is full featured but simple to use. I also like that it doesn’t require a subscription or an account. It’s also a great app for privacy oriented users as there is no data collection.

I’ve emailed customer service a few times with questions and each time they got back to me in a day.

Add weather and it would be perfect

Add weather like fantastical to make it the perfect app

Very grateful for this Calendar app

I have used Calendar 366 for a number of years now on both my iPhone and Mac. Maintained by a single developer who gets back very quickly if you write with questions, and/or requests. Go searching through the settings, it is more powerful than on first site.

If you want to add more power to Apple’s Calendar app, but don’t need all the bells and whistles of some other apps, I highly recommend Calendar 366.
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App is broken

When I try to edit an existing event, access denied message pops up.

It isn’t really a Fantastical replacement

After Fantastical raised their prices, I decided to switch to this. Does 90% of what I need but the last 10% is what drives me off the wall. The natural language feature to create invites is unusable and almost seems like it uses Siri logic. I put “Doctors at 3” and sets it to 3am. I then go change it to 3pm manually and it decides to do 3pm to 4am the next day and I have a multi day appointment. This is super frustrating when you are at a doctor’s office trying to put in the appointment quickly. Also the lack of a real calendar app on macOS is a big con for me, having it in the menu bar doesn’t do it for me.
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Ridiculous

I tried to give a one star and it wouldn’t let me. That’s how much of a sheet this app is. I was trying to set the calendars up and it keeps popping the window to the app, however, every time I hit the one star, it would convert to a two star into the third or fourth time. I actually wish I never purchased this app and I should’ve just kept with the native calendar app provided by Apple. A lot of customization.
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Like a “hidden gem”

Surprised this app hasn’t gotten more love. Fast, simple to use, easy to find the appointment or free time needed.

Il migliore

Semplice da usare, completo, senza fronzoli inutili e odiosi abbonamenti. Ottimo lavoro!

Not a standalone calendar app

I was looking for an app that was a stand alone calendar app not connected to my calendar on my phone. Basically wanted to be able to keep track of work events without it mixing in with my personal calendar. It is not useful for that…. Highly unfortunate that I paid 10$ for it

Way better than the stock calendar

My only problem was finding the settings button on the light screen. I used the app on the ipad and found the button easily. It's gray on white so it's a little rough on old eyes. FYI, it's on the bottom left and then on the bottom left again.

Really nice having 2 different options on what displays on the Apple watch - 3 actually if you include just the date.

Many notifications sounds, too. Overall, a fantastic app!
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Awesome Calendar

The app is full featured but simple to use. I also like that it doesn’t require a subscription or an account.

I’ve emailed customer service twice with questions and each time they got back to me in a day.

Marvelous !

Cette application mérite d’être connue par le plus grand nombre.
Excellente dans ce qu’elle propose et sans abonnement.
L’appli est épurée sans être minimaliste à l’extrême, ergonomique et va à l’essentiel.
Bravo aux développeurs pour leur travail.

Horrible customer support

No user manual and no response to email questions.

Bravo aux développeurs !

Lisibilité parfaite et personnalisation très bien pensée. Je vous recommande cette application dont le rapport qualité/prix est largement devant bien des applications beaucoup plus chères.