Comparison

Caleido (formerly Event Book) vs ShoppingCalculator byNSDev

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Caleido (formerly Event Book)

This app offers a streamlined approach to managing your schedule and to-dos. It features a customizable interface with integrated map and weather information for efficient planning. Syncs with existing calendars and provides multiple view options for events and tasks.

Highlights
  • Calendar and task management
  • Customizable interface
  • Map and weather integration
  • Syncs with existing calendars
  • Multiple view options (day, week, month, list, location, task)
  • Event and task management
Features
Read full description

Featured by Apple, TechCrunch, and more! Caleido is a free, simple, and beautifully re-imagined calendar and task app. With usability and simplicity in mind, Caleido’s uniquely customizable interface along with map and weather integration helps you easily manage your life. With Caleido you can: ∙ Instantly sync with all your existing iOS calendars (iCloud, Gmail, Yahoo, Exchange, Hotmail, AOL, and more). ∙ Manage events, tasks, and frequent locations with day, timeline, week, month, list, location and task views. Full map, contact, location, and weather integration keep you one step ahead. ∙ Customize your experience with iPhone 7 (Silver, Space Gray, Gold), iPhone SE (Blue, Green, Red), and seasonal themes!

About

ShoppingCalculator byNSDev

Features
Read full description

This app was created to easily calculate discount items when shopping. You can calculate immediately with fixed value buttons such as 5%, 10%, 20%, 30%, 40%, 50% 60%. Other than that, I made it possible to select from 1% -99% selection screen. You can subtract it from the total amount with the + - buttons on the left and right of the amount. History can be displayed. When you enter a budget, we automatically calculate the balance that can be purchased. Use the AC button to make it all 0s and history is cleared. The C button sets the current item's amount to 0. The BS button deletes the current amount by one digit. The currency is the Japanese yen. Please fill out the request in the review. We will correspond as much as possible.

Screenshots

Caleido (formerly Event Book)4 screens
ShoppingCalculator byNSDev3 screens

Verdict

The call

The clearest difference is update cadence: Caleido (formerly Event Book) at every 2 months against ShoppingCalculator byNSDev's every 39 months. Caleido (formerly Event Book) also leads on iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Caleido (formerly Event Book) ships an update every 2 months, ShoppingCalculator byNSDev every 39 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
Caleido (formerly Event Book) versus ShoppingCalculator byNSDev: the parameters behind the verdict, then further details
ParameterCaleido (formerly Event Book)ShoppingCalculator byNSDev
PriceFreeFree
Rating3.8 (5 ratings) — better—
Positive reviews73.5% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 months — betterEvery 39 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better15.6
Further details — not scored
Size13 MB4 MB
Age rating17+4+
DeveloperAbhinay AshutoshNIHON SYSTEM DEVELOPER CORPORATION

Bugs and requests

Caleido (formerly Event Book)

Reported bugs

17 issues
  • App crashes when setting alarms or editing events
  • Weather widget fails to load or display
  • Location services cause repeated permission requests
  • Month view displays events one day before actual date
  • Week view shows incorrect day labels (Sunday appears twice)
Show 12 more
  • Events disappear or get duplicated unexpectedly
  • App crashes on iOS 7, 8, and newer versions
  • Unable to add or import calendar events
  • Map integration crashes app
  • Reminder notifications not working
  • Syncing issues with multiple calendars
  • App becomes unresponsive when editing events
  • Location request loops infinitely
  • Events not syncing to other calendar apps
  • App freezes when changing settings
  • Weather temperature unit settings don't work
  • Chinese character input not supported

Requested features

18 requests
  • Push notifications for events and reminders
  • Color coding for different calendars
  • Search functionality for events
  • Facebook birthday integration
  • Natural language event input
Show 13 more
  • iPad version
  • Dark mode/additional themes
  • Ability to change week start day (Monday vs Sunday)
  • Google Calendar sync
  • Event invitation and RSVP functionality
  • Drag and drop event management
  • Badge notification with current date
  • Celsius temperature option
  • Desktop/Mac version
  • Notes and image attachments for events
  • Russian, German, Chinese language support
  • Customizable default view on app launch
  • Double-click day to open event list

ShoppingCalculator byNSDev

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Caleido (formerly Event Book)

No in-app purchases

None

ShoppingCalculator byNSDev

No in-app purchases

Questions

Is Caleido (formerly Event Book) free?
Caleido (formerly Event Book) is free to download, with no in-app purchases.
Is ShoppingCalculator byNSDev free?
ShoppingCalculator byNSDev is free to download, with no in-app purchases.
Do Caleido (formerly Event Book) or ShoppingCalculator byNSDev have ads?
Neither Caleido (formerly Event Book) nor ShoppingCalculator byNSDev shows ads.
Which is updated more often, Caleido (formerly Event Book) or ShoppingCalculator byNSDev?
Caleido (formerly Event Book) ships an update every 2 months, and ShoppingCalculator byNSDev every 39 months. Most recently, Caleido (formerly Event Book) was updated on November 1, 2026 and ShoppingCalculator byNSDev on October 29, 2026.

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