Comparison

Outliner vs Appoint

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

Head to head
About

Outliner

Organize your thoughts, tasks, and projects with a powerful outlining tool. Create structured lists, track project progress with visual indicators, and collaborate with others. Sync your work across devices and cloud storage for seamless access.

Highlights
  • Create structured outlines
  • Track project progress with pie charts
  • Sync with cloud storage (OneDrive, Dropbox)
  • Collaborate with other users
  • Drag and drop editing
  • Search and filter outlines
  • Archive old outlines
Features
Read full description

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 3.20 • iOS 27 support • Updated Dropbox and OneDrive integrations • Bug fixes 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

About

Appoint

This calendar app learns your scheduling habits to suggest event details like titles, times, and locations. It offers multiple views, customization options, and privacy-focused local processing. Enjoy smart input, drag-and-drop rescheduling, and astronomical data.

Highlights
  • Smart event input with suggestions
  • Multiple customizable calendar views
  • Drag-and-drop event rescheduling
  • Privacy-focused local data processing
  • Sun, moon, and daylight data
  • Home screen widgets
Features
Read full description

Create events faster than you ever thought possible. Appoint learns how you schedule — suggesting titles, times, locations, and details before you finish typing. It's a calendar built for people who value their time. SMART INPUT Type "3pm" or "9-12am" and Appoint sets the time. Type "1.5h" and it sets the duration. Start typing a title and it suggests the rest — prefilling time, calendar, notes, and recurrence from your history. Contact names are detected automatically. All of this works in any language. EVERY VIEW YOU NEED Day, week, month, and list views — each designed for a different purpose. Pinch to zoom in day and week views. See relative dates in the list view ("today", "in 3 weeks"). Color-coded dots in month view show how busy each day is at a glance. MAKE IT YOURS Choose from over a dozen built-in color themes — or create your own from scratch. Light, dark, colorful, minimal — Appoint looks the way you want it to. Event colors adapt automatically to your chosen theme so everything stays readable and beautiful. Customize work hours, week start day, default duration, and preferred map app. DRAG & DROP Long-press to move events between times and days. Quickly reschedule without opening a single form. STATISTICS See exactly where your time goes. Break your schedule down by calendar and time period, spot your busiest days and recurring commitments, and watch the numbers update as you pick any date range. Export any range to CSV or ICS when you need the raw data. PRIVACY FIRST Your data stays on your device. No accounts, no cloud services, no tracking. Appoint works with iCloud, Google, Exchange, or any calendar service supported by iOS — but all the intelligence happens locally on your phone. SUN & MOON See sunrise and sunset times as subtle markers on your day and week timelines — calculated for your location, updating with the seasons. Moon phases appear on the month grid so you always know when the next full or new moon is. Astronomically accurate, no internet needed. Appoint only uses your approximate location — no precise tracking. WIDGETS Event countdown, upcoming schedule, sunrise & sunset forecast, and a full-year daylight chart — right on your home screen. Seven widgets in three sizes, each with theme support. ALSO INCLUDED - Powerful search across all fields and views - Scheduling conflict detection - Recurrence rules for repeating events - Multiple alarms and reminders - Invitations management - Integrated maps with turn-by-turn directions - Timezone support - Full iPad support Syncs with the built-in Calendar app — your events are always up to date. A one-time Appoint Pro purchase unlocks even more — no subscription, yours forever. Already bought Appoint? You already have Pro, with our thanks. feedback@appointcal.com

Screenshots

Outliner4 screens
Appoint4 screens

Verdict

The call

The clearest difference is price: Appoint at Free against Outliner's $4.99. Appoint also leads on update cadence (every 2 weeks vs every 4 months). Outliner's advantage is in-app purchases (none vs 1) and rating (4.8 vs 4.5). On review sentiment, ads, device support and iOS requirement 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

Appoint is free to download; Outliner costs $4.99 up front. Appoint sells 1 one-off in-app purchase. Outliner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Outliner holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Outliner has 88 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 87% of Outliner's written reviews are positive against 85% of Appoint's.

UpkeepUpdate frequency

Outliner ships an update every 4 months, Appoint every 2 weeks. The most recent releases landed on September 25, 2026 and September 2, 2026 respectively.

Scorecard6 real differences · 4 level
Outliner versus Appoint: the parameters behind the verdict, then further details
ParameterOutlinerAppoint
Price$4.99Free — better
Rating4.8 (88 ratings) — better4.5 (4 ratings)
Positive reviews86.7% of reviews — better84.8% of reviews
Number of ratings88 — better4
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size17 MB11 MB
Age rating4+4+
DeveloperCarbonFinUrs Gort

Customer experience

Outliner

All ratings88 ratings
Positive93.2%
Neutral1.1%
Negative5.7%
Written reviews323 reviews
Positive86.7%
Neutral6.2%
Negative7.1%

Appoint

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews33 reviews
Positive84.8%
Neutral6.1%
Negative9.1%

Bugs and requests

Outliner

Reported bugs

3 issues
  • Unexpected error: 500 when saving data
  • Pane that lists outlines won't go away or resize
  • Keyboard takes up too much screen space

Requested features

5 requests
  • Add due dates and priority levels for tasks
  • Improve export and sharing options (e.g., PDF, Word)
  • Implement better organization and search capabilities
  • Introduce a desktop companion app for easier editing
  • Add support for voice notes and other multimedia

Appoint

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Outliner

No in-app purchases

1 purchases

Appoint

One-time1
  • Appoint Pro$7.99

Questions

Is Outliner free?
Outliner costs $4.99, with no in-app purchases.
Is Appoint free?
Appoint is free to download, with in-app purchases available.
Which has better reviews, Outliner or Appoint?
Outliner is rated higher. Outliner averages 4.8 out of 5 from 88 ratings, while Appoint averages 4.5 from 4 ratings.
Do Outliner or Appoint have ads?
Neither Outliner nor Appoint shows ads.
Which is updated more often, Outliner or Appoint?
Outliner ships an update every 4 months, and Appoint every 2 weeks. Most recently, Outliner was updated on September 25, 2026 and Appoint on September 2, 2026.

Other comparisons