71
BU Score
Strong
PaperCal
✍️ BU Analytics Review
“
PaperCal is an iOS app from Johan Burgler in the Productivity category, currently rated 4.8★ across 411 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 71 — Strong (healthy traction). For a Productivity app, that means healthy traction.
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 7 of 7 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 (4.8★)METRIC | +$2,200 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Multilingual (33 languages)METRIC | +$1,500 | |
| Established app (5y old)METRIC | +$800 | |
| Early-stage install base (411 ratings)METRIC | +$400 |
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
Sep 24
Nov 24
Dec 24
Feb 25
Apr 25
Aug 25
Dec 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 →💾 105 MB🔞 4+📱 iOS 14.0+🔖 v1.35🔄 updated 1w ago🌐 AR, CA, HR, CS, DA +28📂 Productivity💰 Paid🚀 Launched 2021 (5y old)
📝 About this app
A paper calendar. Reimagined for iPhone.
Simple, clear, and easy to use.
With beautiful widgets for your Home and Lock Screen.
▶ Why PaperCal? ◀
• See your schedule at a glance with clean, paper-inspired layouts
• See tasks and events together in one view
• Easy-to-read widgets for your Home and Lock Screen
• Customize your calendar with 20+ beautifully designed themes
• No clutter, no learning curve
▶ Calendar Views ◀
Switch between yearly, monthly, weekly, and daily views.
Flip through pages like a real paper calendar.
A clean, distraction-free interface.
▶ Tasks & Events in One Place ◀
No need for multiple apps.
• Manage tasks and events in one place
• Add and organize activities instantly
• Sync with your existing calendars
• Stay up to date across all your devices
▶ Make It Yours ◀
Choose from 20+ unique themes designed by illustrator Jojo Falk.
• Add color tags to events and tasks
• Quickly search your schedule
• View week numbers and day counts
▶ Built for iPhone (and more) ◀
• Home Screen & Lock Screen widgets
• Works on iPhone, iPad, Apple Watch, and Mac (Apple silicon)
• One purchase, available on all devices
▶ Loved by Users ◀
“I love its simplicity and reliability.”
“This calendar is great — I can see my whole week at a glance.”
“I love this calendar because I can use it like a planner.”
Rated 4.7+ by users worldwide.
▶ A Fresh Start ◀
PaperCal is the successor to “Week Agenda Ultimate”.
Rebuilt from scratch based on years of feedback — now faster, clearer, and more refined.
Start using PaperCal today.
Simple, clear, and easy to use.
With beautiful widgets for your Home and Lock Screen.
▶ Why PaperCal? ◀
• See your schedule at a glance with clean, paper-inspired layouts
• See tasks and events together in one view
• Easy-to-read widgets for your Home and Lock Screen
• Customize your calendar with 20+ beautifully designed themes
• No clutter, no learning curve
▶ Calendar Views ◀
Switch between yearly, monthly, weekly, and daily views.
Flip through pages like a real paper calendar.
A clean, distraction-free interface.
▶ Tasks & Events in One Place ◀
No need for multiple apps.
• Manage tasks and events in one place
• Add and organize activities instantly
• Sync with your existing calendars
• Stay up to date across all your devices
▶ Make It Yours ◀
Choose from 20+ unique themes designed by illustrator Jojo Falk.
• Add color tags to events and tasks
• Quickly search your schedule
• View week numbers and day counts
▶ Built for iPhone (and more) ◀
• Home Screen & Lock Screen widgets
• Works on iPhone, iPad, Apple Watch, and Mac (Apple silicon)
• One purchase, available on all devices
▶ Loved by Users ◀
“I love its simplicity and reliability.”
“This calendar is great — I can see my whole week at a glance.”
“I love this calendar because I can use it like a planner.”
Rated 4.7+ by users worldwide.
▶ A Fresh Start ◀
PaperCal is the successor to “Week Agenda Ultimate”.
Rebuilt from scratch based on years of feedback — now faster, clearer, and more refined.
Start using PaperCal today.
🆕 What's New · v1.35
Various improvements
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- PaperCal
- Developer
- Johan Burgler
- Bundle ID
- com.shadowbit.papercal
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- AR, CA, HR, CS, DA, NL, EN, FI, FR, DE, EL, HE, HI, HU, ID, IT, JA, KO, MS, NB, PL, PT, RO, RU, ZH, SK, ES, SV, TH, ZH, TR, UK, VI
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
- $19.2K/mo
- Top-grossing rank
- Outside top 100 in US Productivity
- 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
- https://apps.apple.com/us/app/letterloop-group-newsletters/id6468623700
- 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/id1860412460
📈Ratings growth411 ratings+41000% lifetimeShow 3-year history estimate ▾
Tracked (43 weeks) Pre-tracking estimate (37 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.
