Comparison

Projects & Tasks vs Cairn

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

Head to head
About

Projects & Tasks

Features
Read full description

Key features: - tasks with priorities - tasks with a due date - task completion, priority - relation with projects - relation with contacts - contacts with a map view - archive, you can move an unused project to archive - reporting, create from a template, customize any time (only macOS) - quick search - synchronization with macOS Available on macOS, iOS, iPad. Questions ? Help ? Visit https://tegisoft.com/p/pat/help/

About

Cairn

Manage tasks and notes directly within your existing Markdown files. This app offers focused views, quick capture, and robust task management features, all while keeping your data private and locally stored. It integrates seamlessly with Obsidian and other file sync services.

Highlights
  • Native Markdown task and note management
  • Works with Obsidian vaults or any folder
  • Quick capture with date, tag, and priority parsing
  • Multiple task views (Today, Upcoming, Inbox, Pool)
  • Full support for sub-tasks and recurring tasks
  • Local reminders and Live Activity integration
  • Data stays local, no cloud sync required
Read full description

Cairn is a fast, native task and note companion that lives on top of the Markdown files you already own. Point it at your Obsidian vault — or any folder of Markdown notes — and your tasks and notes appear in clean, focused views. Everything you do in Cairn is written straight back to your files as plain text, in the Obsidian Tasks format. YOUR NOTES STAY YOURS • No account, no sign-up, no Cairn cloud database — your tasks live in your own files • Cairn does not send your notes or tasks to the developer • Careful, patch-based edits change only the content you touched, preserving the rest of your note • Works alongside Obsidian, iCloud Drive, Git, or any sync you already use CAPTURE, BROWSE, AND PLAN • Browse and edit Markdown notes directly in your vault • Quick capture into your daily note, with date, tag, and priority tokens parsed as you type • Choose where longer captures are saved • Today, Upcoming, Inbox, and Pool views, plus a global filter for folders, tags, dates, priority, and status • Full support for sub-tasks and task hierarchies • Recurring tasks in Obsidian Tasks format, with safe completion handling • Convert upcoming calendar events into tasks, or mirror your dated tasks into a calendar you choose (optional) STAY ON TRACK • Local reminders for due tasks — including sunrise-relative reminders computed entirely on your device • A Live Activity keeps today's progress on your Lock Screen and in the Dynamic Island • Home Screen widgets and a Control Center quick-capture control • Search across every task in your vault MADE FOR OBSIDIAN — NOT ONLY OBSIDIAN Cairn reads and writes the Obsidian Tasks plugin format (due, scheduled, start, and done dates, priorities, recurrence, tags), so your vault stays fully compatible with your desktop setup. Don't use Obsidian? Create a plain task folder in the Files app and Cairn works as a stand-alone Markdown to-do app. Cairn asks for access only to the folder you pick. Calendar access and location (used to compute local sunrise times) are optional and processed on your device. If you choose iCloud Drive or another Files or calendar provider, that provider's own sync and privacy terms apply.

Screenshots

Projects & Tasks4 screens
Cairn4 screens

Verdict

The call

The clearest difference is in-app purchases: Cairn at none against Projects & Tasks's 2. Projects & Tasks's advantage is update cadence (every 2 days vs every 6 days) and device support (4 vs 2). On price and ads 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

Both are free to download. Projects & Tasks sells 2 one-off in-app purchases. Cairn asks for nothing beyond the download.

UpkeepUpdate frequency

Projects & Tasks ships an update every 2 days, Cairn every 6 days. Both last shipped on October 17, 2026.

Scorecard4 real differences · 6 level
Projects & Tasks versus Cairn: the parameters behind the verdict, then further details
ParameterProjects & TasksCairn
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 6 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size2 MB9 MB
Age rating4+4+
DeveloperTom TegelhoffYoung Hun JEONG

In-app purchases

2 purchases

Projects & Tasks

One-time2
  • Unlock Project Reporting$1.99
  • Project Archive$1.99
None

Cairn

No in-app purchases

Questions

Is Projects & Tasks free?
Projects & Tasks is free to download, with in-app purchases available.
Is Cairn free?
Cairn is free to download, with no in-app purchases.
Do Projects & Tasks or Cairn have ads?
Neither Projects & Tasks nor Cairn shows ads.
Which is updated more often, Projects & Tasks or Cairn?
Projects & Tasks ships an update every 2 days, and Cairn every 6 days. Most recently, Projects & Tasks was updated on October 17, 2026 and Cairn on October 17, 2026.

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