67
BU Score
Solid
Outliner
✍️ bumetric analysis
“
Outliner is an iOS app from CarbonFin in the Productivity category, currently rated 4.8★ across 85 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 67: 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
—
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 12 of 12 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 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| too expensiveREVIEW | −$1,000 | |
| Established app (7y old)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (85 ratings)METRIC | −$300 |
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
Sep 24
Jun 25
Oct 25
Nov 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 →💾 12 MB🔞 4+📱 iOS 15.0+🔖 v3.19.3🔄 updated 2mo ago🌐 EN📂 Productivity💰 Paid🚀 Launched 2019 (7y old)
📝 About this app
CarbonFin Outliner allows you to organize your thoughts, tasks, and projects. Easily create a todo list for today, or track an entire project anywhere you are. Share your outlines, edit them online, and collaborate with other Outliner users.
Highlights
• Create outlines full of notes, structured lists, tasks, or detailed projects
• Sync your outlines automatically to Outliner Online, OneDrive, or Dropbox for web or desktop editing
• Get a quick view of project progress - tasks with subtasks show a pie-chart indicating percent completed
Organize
• Search through all your outlines or an individual outline
• Tag your outlines, and filter based on tag
• Archive old outlines to hide them from view without deleting
Easy-to-use Editor
• Drag and drop to move items within an outline
• Copy, paste
• Undo, redo
• Expand all, collapse all
• Optional outline numbering
• Zoom in to focus on a single subtree
Outliner Online
• Securely synchronize your outlines with Outliner Online
• View and edit your outlines in any web browser
• Import and export outlines as plain text or OPML
• Keep all your devices synchronized
• Share an outline with other Outliner users to collaborate
OneDrive and Dropbox
• Sync your outlines with OneDrive or Dropbox to allow quick import/export
• Seamlessly access and edit across your iOS devices and PCs
-= Recent version history =-
Version 3.19
• iOS 26 support and adoption of liquid glass
Version 3.18
• iOS 18 support
• Dark and tinted app icons
Version 3.17
• Minor bug fixes
Version 3.16
• Minor bug fixes
• iOS 17 support
Version 3.15
• Fixed Dropbox integration
• Show a warning when unlinking Dropbox/OneDrive if there are unsynced outlines
• iOS 16 support
Version 3.12
• Dark mode
• Added confirmation to "Delete Completed"
• Changing "Archived" won't update the outline's modification time
• iOS 13 support
Version 3.11
• OneDrive sync support
Version 3.10
• Sync the order of outlines across devices (CarbonFin outlines only)
• iOS 12 support
Version 3.9
• iPhone X support
• iOS 11 support
Version 3.8
• Open In... support
• Ability to hide the outline list on iPad
• Minor UI tweaks
Highlights
• Create outlines full of notes, structured lists, tasks, or detailed projects
• Sync your outlines automatically to Outliner Online, OneDrive, or Dropbox for web or desktop editing
• Get a quick view of project progress - tasks with subtasks show a pie-chart indicating percent completed
Organize
• Search through all your outlines or an individual outline
• Tag your outlines, and filter based on tag
• Archive old outlines to hide them from view without deleting
Easy-to-use Editor
• Drag and drop to move items within an outline
• Copy, paste
• Undo, redo
• Expand all, collapse all
• Optional outline numbering
• Zoom in to focus on a single subtree
Outliner Online
• Securely synchronize your outlines with Outliner Online
• View and edit your outlines in any web browser
• Import and export outlines as plain text or OPML
• Keep all your devices synchronized
• Share an outline with other Outliner users to collaborate
OneDrive and Dropbox
• Sync your outlines with OneDrive or Dropbox to allow quick import/export
• Seamlessly access and edit across your iOS devices and PCs
-= Recent version history =-
Version 3.19
• iOS 26 support and adoption of liquid glass
Version 3.18
• iOS 18 support
• Dark and tinted app icons
Version 3.17
• Minor bug fixes
Version 3.16
• Minor bug fixes
• iOS 17 support
Version 3.15
• Fixed Dropbox integration
• Show a warning when unlinking Dropbox/OneDrive if there are unsynced outlines
• iOS 16 support
Version 3.12
• Dark mode
• Added confirmation to "Delete Completed"
• Changing "Archived" won't update the outline's modification time
• iOS 13 support
Version 3.11
• OneDrive sync support
Version 3.10
• Sync the order of outlines across devices (CarbonFin outlines only)
• iOS 12 support
Version 3.9
• iPhone X support
• iOS 11 support
Version 3.8
• Open In... support
• Ability to hide the outline list on iPad
• Minor UI tweaks
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Outliner
- Developer
- CarbonFin
- Bundle ID
- com.carbonfin.Outliner
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- EN
Company
- Website
- carbonfin.com
- 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
- $15.6K/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
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
⭐Recent App Store Reviews49 latest · avg 4.63★ · 81.6% 5★ · 4.1% 1★
5★40 (82%)
4★5 (10%)
3★1 (2%)
2★1 (2%)
1★2 (4%)
+0 ratings/week
Praise: great ×15 best ×10 excellent ×5 love ×5 favorite ×4Complaints: bug ×2 crash ×2 hate ×1
Top positive
★★★★★ Great app!
I had a glitch once, a long time ago, but it was pretty easily fixed and I continue to depend on it every day for all my lists - groceries to buy, books I've read, medical test results, cost comparisons and many more. It's a very…
★★★★★ Awesome app that I've used for years
I've now been using this app for several years and I think it's great. Very reliable. I use it almost every day.
Very happy to see the app updated for iOS 9 with side-by-side mode working great on iPad.…
Top negative
★☆☆☆☆ Latest version loses functionality
The new drop down menu basically is confusing and not as easy as the bottom
Page menu bar was.…
★☆☆☆☆ Unclear on the concept
The app provides for the use of tags. I had intended to make an outline of a project and use tags to identify resources and people for each item.
The developer just told me that tags can only be applied to a WHOLE outline, not individual …
📈Ratings growth85 ratings+-47% lifetimeShow 3-year history estimate ▾
Tracked (59 weeks) Pre-tracking estimate (35 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 Outliner: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.