Comparison

CalCs vs Wareki

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

Head to head
About

CalCs

Enhance your Apple Watch experience with customizable calendar complications. Display dates, events, reminders, and monthly calendars directly on your watch face. Manage your schedule at a glance without needing to open the main app.

Highlights
  • Date display complications
  • Event and reminder display
  • Monthly calendar view
  • Customizable week start day
  • Holiday support
  • Minimal settings
Features
Currently charting
Read full description

CalCs (short for "Calendar Complications") is a watchOS-only app that provides various complications related to the calendar. --Important Notes-- The features built into the main body of this app are limited to listing events/reminders & displaying a monthly calendar. All other features are provided through complications & the Smart Stack. ●If you download CalCs from the iPhone App Store, due to synchronization issues between the iPhone & Apple Watch, CalCs may not appear on the Apple Watch. According to Apple's specifications, watchOS-only apps cannot be re-downloaded from the App Store app on the iPhone. Therefore, please use the App Store app "on your Apple Watch" & follow the steps below to re-download it. ・Scroll to the bottom→"Account"→"Purchased"→"CalCs"→re-download ------------------- Key Features ●Supports a variety of complications such as date display, events/reminders display, & monthly calendar display ・Date Display Displays the current date in various formats. ・Event/Reminder Display Displays events/reminders synced with your iPhone. You can choose whether or not to include all-day events. ・Monthly Calendar Display Displays the monthly calendar in various formats. You can choose to start the week on Monday. Supports holidays in some areas. *Holiday data depends on external APIs & may be incomplete. Only Modular Duo supporting models (Series 7+, not SE series) can show a month calendar using 2 large rectangles. Other models can show it in 1, with smaller font. ●In the main app, events/reminders, & the monthly calendar are displayed Tapping the complication opens the app, where you can view the list of events/reminders synced with your iPhone, as well as the monthly calendar. *Only incomplete reminders are displayed. *The app currently does not have functionality to add, edit, or delete events/reminders, nor to mark reminders as complete. ●Minimal Setting Options To avoid complicating settings on the small Apple Watch screen, the settings only allow you to select which calendar/reminder lists to display. *Notes ・The corner complications, circular complications, & large rectangular complications are supported only on Apple Watch Series 4 & later, so CalCs is not guaranteed to work on Series 3 or earlier models. ・Due to the limitations of watchOS complication display updates, complications may not immediately reflect changes when the date changes or after events or reminders are added or edited on the iPhone. ・After placing a complication for the 1st time, it may take some time for it to actually appear. ・If the complication is not updating, try tapping the complication to open CalCs, as this may refresh the data. ・If the complication is not updated even after launching CalCs, the issue may be resolved by 1 of the following methods. Please try them. 1.Restart both your iPhone & Apple Watch. 2.Force restart CalCs ①With CalCs open, press & hold the side button. ②When the screen for emergency call & power off appears, press & hold the Digital Crown. 3.Reinstall CalCs ①Press the Digital Crown to display the app list. ②Press & hold CalCs, then tap the × button to delete it when it appears. ③Launch the App Store app on your Apple Watch. ④Scroll to the bottom→"Account"→"Purchased"→"CalCs"→Re-download. ・If the complication does not update after force quitting & restarting CalCs, try restarting both your iPhone & Apple Watch, as it may resolve the issue. ・If event information is not displayed on the app's main event/reminder list screen or in complications, it may be because full access to the calendar has not been granted. The issue may be resolved by following the steps below to re-enable full access permission to the calendar. Please give it a try. ①Open the "Privacy & Security" section in the iPhone Settings app & tap "Calendars". ②Change CalCs' calendar access to "None", then select "Add Events Only". ③When you open CalCs, you will be prompted to grant full access, so tap "Allow Full Access".

About

Wareki

Features
Read full description

和暦表示のアプリです。 西暦から令和、平成、昭和への年の対応を表示します。 Apple Watch のアプリをインストールすることで和暦の年を表示するコンプリケーションが追加できます。 コンプリケーションを追加することで Apple Watch の文字盤に「令和8年」の表示が追加され、仕事中に和暦の確認ができます。 日本の祝日表示は令和9年度まで対応しています。

Screenshots

Wareki2 screens

Verdict

The call

The clearest difference is in-app purchases: Wareki at none against CalCs's 3. CalCs's advantage is update cadence (every 5 days vs every 2 months) and chart position (#35 vs unranked). On price, ads 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

CalCs costs $0.49 and Wareki $0.99 up front. CalCs sells 3 one-off in-app purchases. Wareki asks for nothing beyond the download.

UpkeepUpdate frequency

CalCs ships an update every 5 days, Wareki every 2 months. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 7 level
CalCs versus Wareki: the parameters behind the verdict, then further details
ParameterCalCsWareki
Price$0.49 — better$0.99
Rating4.6 (9 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings9 — better—
Update frequencyEvery 5 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#35 — better—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Apple Watch
Requires iOS15.0 — better17.0
Further details — not scored
Size6 MB7 MB
Age rating4+4+
DeveloperAkihiro UsuiYutaka Umetsu

In-app purchases

3 purchases

CalCs

One-time3
  • Snack-Sized Tip$0.49
  • Coffee-Sized Tip$1.99
  • Lunch-Sized Tip$3.99
None

Wareki

No in-app purchases

Questions

Is CalCs free?
CalCs costs $0.49, and also offers in-app purchases.
Is Wareki free?
Wareki costs $0.99, with no in-app purchases.
Do CalCs or Wareki have ads?
Neither CalCs nor Wareki shows ads.
Which is updated more often, CalCs or Wareki?
CalCs ships an update every 5 days, and Wareki every 2 months. Most recently, CalCs was updated on September 27, 2026 and Wareki on September 23, 2026.

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