Extreme Calendar Downloads & RevenueExtreme Calendar · App Store
Extreme Calendar is #87 in Business Paid in France and charting in 5 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperBirdsoft LLC
CategoryBusiness
Price7.99 USD
Released
Rating★ 4.3 (24)
Version5.28
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)5k+ worldwide
Full timeline · 6 events in the last 12 months
- 📈Extreme Calendar entered the top 100Top Paid · Business · US
- 📈Extreme Calendar entered the top 100Top Paid · Business · DE
- 📈Extreme Calendar charting in a new countryUnited States
- 📈Extreme Calendar charting in a new countryRussia
- 🆕Extreme Calendar first spotted by AppInsider#56 in Top Paid · Business · Italy
- 🆕Extreme Calendar released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.3 ★
24 ratings
Measured
Best rank now
#87
Business PaidMeasured
Extreme Calendar on the App Store
App details
App ID
431771565
Publisher
Birdsoft LLC
On the store since
Apr 2011
15 years on the store
Minimum OS
iOS 12.0+
iPhone 5s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
7
NL EN FR DE IT PT ES
Size
31 MB
Also listed in
Productivity
Extreme Calendar downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| France | BusinessPaid | #87 |
 Canada | BusinessPaid | #70 |
 United Kingdom | BusinessPaid | #151 |
| Italy | BusinessPaid | #60 |
 Brazil | BusinessPaid | #101 |
Apps near Extreme Calendar on the chart
Business Paid, around #87.
Ratings
App Store, worldwide.
Rating
4.3 ★
24 ratings
Measured
Ratings
24
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.2★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Business apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Extreme Calendar
From the 50 most recent App Store reviews in the US.
Mostly positive (76% of recent reviews give 4–5 stars). People like it for being easy to use, and being useful. The main complaints are about price and subscriptions, and connection and sync problems. Recent reviews are more negative than earlier ones.
What people like
- Ease of use: “Beautiful, easy to read interface”
- Useful: “I highly recommend this app!”
- Features & content: “Now the selection is very workable”
- Updates: “I thought it was amazing a few updates ago”
Common complaints
- Price & subscription: “Don't waste your money like I did”
- Connection & sync: “Never could get the iPad calendar & iPhone calendars to sync”
About Extreme Calendar
One of the most powerful calendars on iOS. Advanced views with plenty of options all designed for speed and flexibility.
You wont get this much information at a glance from any other calendar, and adding events in-line allows you to get in and out and on with your busy day.
Based on Extreme Agenda, it gives you the powerful calendar based views you want at a low price, and allows you to purchase the other features of the full Organizer once you need them.
Features Include:
Great Calendaring
• Powerful views including Year, Month, Week, Upcoming Agenda List, and Day.
• Pull Birthdays and Anniversaries from your contacts with pictures.
• Advanced repeating event options.
• Move/Copy Events
• Military time, ISO week, and week start options.
• Uses and expands on your native calendar data.
• Sync like you would with the default calendar(Google, iCloud, Exchange).
• Next month preview option on Month View
• Uses time bars and icons to keep you informed at a glance
• Put event text right on calendar
• Filter events based on iCal calendars.
• Almost 200 professional icons to mark your events
• Natural Language Entry
• Event Templates
• Email Events
• Drag-n-Drop Events
Power and Flexibility
• Universal Support
• TextExpander Support
• Portrait and Landscape Support.
• Retina and iPhone 5 Display Support.
• Background and color theme choices.
• Help System
• Easily upgraded to Extreme Agenda Planner
---------------------------------------
InApp Purchase
When you are ready to upgrade just pay the difference and your Extreme Calendar becomes Extreme Agenda. Doing so adds powerful contact, task, note, and list views along with search, weather, private filtering, a status coloring choice, and over 800 more icons. And it adds categories for coloring, icons, and advanced filtering.
Otherwise if you want it all now, look for 'Extreme Agenda' in the AppStore.
-------------------------------------
Interface
You can tap-h-hold in the main calendar days and in the time area of the timeline day view for an 'add and paste' toolbar. Copy/Move, used with the paste, are in the toolbar on each event in timeline day.
-------------------------------------
Tech Support / Reviews
Please email us with feature suggestions, bug reports, or you can't figure something out instead of using the reviews if you are rating low, its not good practice to get what you want. Or find Extreme Agenda on Facebook or give @birdsoft a shout out on Twitter and let us know there!
We address most problems reported right away if they really are problems and will help you find a solution. We also list known problems on our site and how they are being resolved.
If you like the app and it works fine for you and/or we worked to get in the features you requested please leave a review to let people know.
We're working hard to give you everything you want in a calendar.
--------------------------
Get Organized. Go Extreme!
You wont get this much information at a glance from any other calendar, and adding events in-line allows you to get in and out and on with your busy day.
Based on Extreme Agenda, it gives you the powerful calendar based views you want at a low price, and allows you to purchase the other features of the full Organizer once you need them.
Features Include:
Great Calendaring
• Powerful views including Year, Month, Week, Upcoming Agenda List, and Day.
• Pull Birthdays and Anniversaries from your contacts with pictures.
• Advanced repeating event options.
• Move/Copy Events
• Military time, ISO week, and week start options.
• Uses and expands on your native calendar data.
• Sync like you would with the default calendar(Google, iCloud, Exchange).
• Next month preview option on Month View
• Uses time bars and icons to keep you informed at a glance
• Put event text right on calendar
• Filter events based on iCal calendars.
• Almost 200 professional icons to mark your events
• Natural Language Entry
• Event Templates
• Email Events
• Drag-n-Drop Events
Power and Flexibility
• Universal Support
• TextExpander Support
• Portrait and Landscape Support.
• Retina and iPhone 5 Display Support.
• Background and color theme choices.
• Help System
• Easily upgraded to Extreme Agenda Planner
---------------------------------------
InApp Purchase
When you are ready to upgrade just pay the difference and your Extreme Calendar becomes Extreme Agenda. Doing so adds powerful contact, task, note, and list views along with search, weather, private filtering, a status coloring choice, and over 800 more icons. And it adds categories for coloring, icons, and advanced filtering.
Otherwise if you want it all now, look for 'Extreme Agenda' in the AppStore.
-------------------------------------
Interface
You can tap-h-hold in the main calendar days and in the time area of the timeline day view for an 'add and paste' toolbar. Copy/Move, used with the paste, are in the toolbar on each event in timeline day.
-------------------------------------
Tech Support / Reviews
Please email us with feature suggestions, bug reports, or you can't figure something out instead of using the reviews if you are rating low, its not good practice to get what you want. Or find Extreme Agenda on Facebook or give @birdsoft a shout out on Twitter and let us know there!
We address most problems reported right away if they really are problems and will help you find a solution. We also list known problems on our site and how they are being resolved.
If you like the app and it works fine for you and/or we worked to get in the features you requested please leave a review to let people know.
We're working hard to give you everything you want in a calendar.
--------------------------
Get Organized. Go Extreme!
Latest updates
5.28
