61
BU Score
Solid
Duoserve Calendar
✍️ bumetric analysis
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Duoserve Calendar is an Android app from Duoserve Calendar in the Productivity category, currently rated 4.2★ across 4,701 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 61: Solid (established niche player). For a Productivity 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
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Reviews
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Forecast Revenue / mo
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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 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Low install base (4,701 ratings)METRIC | +$1,500 | |
| Good rating (4.2★)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
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.
⭐ 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 →🔖 v5.0.2🔄 updated 5y ago📂 Productivity💰 Free
📝 About this app
This is the original Google calendar released for Android.
This free calendar app is simple, clean and without gimmicks or ads. We intend on keeping this basic version Free for as long as we can. Duoserve Calendar has everything you need in a calendar app - whether you want to use this calendar as a family calendar, personal calendar, or as a business calendar. You can look at your appointments in 4 different views: Agenda Calendar View, Daily Calendar View, Weekly Calendar View, and Monthly calendar View.
Our Monthly calendar view is unique because you can scroll vertically, indefinitely through months and see how busy your schedule is. Our calendar is also completely free, and completely ad free! Very rare to find out there. This calendar app additionally features recurring events, appointment reminders, and color coded appointments/events.
We are almost at 1 million users, try it to see why! If you have any feedback on any features you would like to see fixed or updated, feel free to email us at our contact email below.
This free calendar app is simple, clean and without gimmicks or ads. We intend on keeping this basic version Free for as long as we can. Duoserve Calendar has everything you need in a calendar app - whether you want to use this calendar as a family calendar, personal calendar, or as a business calendar. You can look at your appointments in 4 different views: Agenda Calendar View, Daily Calendar View, Weekly Calendar View, and Monthly calendar View.
Our Monthly calendar view is unique because you can scroll vertically, indefinitely through months and see how busy your schedule is. Our calendar is also completely free, and completely ad free! Very rare to find out there. This calendar app additionally features recurring events, appointment reminders, and color coded appointments/events.
We are almost at 1 million users, try it to see why! If you have any feedback on any features you would like to see fixed or updated, feel free to email us at our contact email below.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Duoserve Calendar
- Developer
- Duoserve Calendar
- Bundle ID
- com.concentriclivers.calendar
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- Not found
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $784/mo
- Top-grossing rank
- Not found
- 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
- Not found
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.
More by Duoserve Calendar
View all →
Full revenue analysis
Read the article-style breakdown for Duoserve Calendar: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.