50
BU Score
Solid
CalCs - Calendar Complications
✍️ bumetric analysis
“
CalCs - Calendar Complications is an iOS app from Akihiro Usui in the Utilities category, currently rated 4.6★ across 9 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Our BU Score puts it at 50: Solid (established niche player). For a Utilities app, that means established niche player.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| slowREVIEW | −$1,200 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (9 ratings)METRIC | −$300 | |
| Growing app (2y old)METRIC | +$200 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Aug 24
Dec 24
Sep 25
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 5 MB🔞 4+📱 iOS 14.0+🔖 v1.102🔄 updated 4d ago🌐 EN📂 Utilities💰 Free🚀 Launched 2024 (2y old)
📝 About this app
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" and 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.
It also supports holidays in some areas.
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 one, 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. Please understand.
●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 one of the following methods. Please try them.
1. Restart both your iPhone and Apple Watch.
2. Force restart CalCs
① With CalCs open, press and hold the side button.
② When the screen for emergency call and power off appears, press and hold the Digital Crown.
3. Reinstall CalCs
① Press the Digital Crown to display the app list.
② Press and hold CalCs, then tap the × button to delete it when it appears.
③ Launch the App Store app on your Apple Watch.
④ Scroll to the bottom→"Account"→"Purchased"→"CalCs"→Re-download.
・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and 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".
---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" and 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.
It also supports holidays in some areas.
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 one, 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. Please understand.
●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 one of the following methods. Please try them.
1. Restart both your iPhone and Apple Watch.
2. Force restart CalCs
① With CalCs open, press and hold the side button.
② When the screen for emergency call and power off appears, press and hold the Digital Crown.
3. Reinstall CalCs
① Press the Digital Crown to display the app list.
② Press and hold CalCs, then tap the × button to delete it when it appears.
③ Launch the App Store app on your Apple Watch.
④ Scroll to the bottom→"Account"→"Purchased"→"CalCs"→Re-download.
・If the complication does not update after force quitting and restarting CalCs, try restarting both your iPhone and 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".
🆕 What's New · v1.102
The following complications have been added:
・Ongoing or Today's Next Event
・Ongoing or Today's Next 3 Events
・Ongoing or Today's Next 4 Events
・Ongoing or Today's Next Event
・Ongoing or Today's Next 3 Events
・Ongoing or Today's Next 4 Events
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- CalCs - Calendar Complications
- Developer
- Akihiro Usui
- Bundle ID
- broad-connect.net.CalCs
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $879/mo
- Top-grossing rank
- Outside top 100 in US Utilities
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- https://apps.apple.com/us/iphone/story/id1406503654
⭐Recent App Store Reviews2 latest · avg 5.0★ · 100.0% 5★ · 0% 1★
5★2 (100%)
4★0 (0%)
3★0 (0%)
2★0 (0%)
1★0 (0%)
+0 ratings/week
Praise: great ×2 best ×1 favorite ×1Complaints: bug ×1
Top positive
★★★★★ No space between last letter of day and first number of two-digit month
Hi. I really like this app. If you can fix one minor issue, that would be helpful. There is no space between the last letter of the day of the week and the first number of a two digit month. For example, on the sundial face, the date today …
★★★★★ A couple requests to make it better
I like the app but it would be great if the space between a date and the event title can be closer. When there is no time event, space seems to be too much. Maybe use a smaller font size for time to keep the date and time to be same width. …
Top negative
★★★★★ No space between last letter of day and first number of two-digit month
Hi. I really like this app. If you can fix one minor issue, that would be helpful. There is no space between the last letter of the day of the week and the first number of a two digit month. For example, on the sundial face, the date today …
★★★★★ A couple requests to make it better
I like the app but it would be great if the space between a date and the event title can be closer. When there is no time event, space seems to be too much. Maybe use a smaller font size for time to keep the date and time to be same width. …
📈Ratings growth9 ratings+800% lifetimeShow 3-year history estimate ▾
Tracked (4 weeks) Pre-tracking estimate (24 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
Full revenue analysis
Read the article-style breakdown for CalCs - Calendar Complications: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.