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Most buyers should pick Obsidian.
Pick Obsidian if you want a free, local Markdown vault for linked notes; optional Sync costs $4 per user/month billed annually or $5 monthly. DEVONthink fits Mac users managing research files, folders, and archives, with XRay previews. Its Standard license is $99 one-time for two Macs; Pro is $199 and adds five mobile seats. Obsidian is cheaper to start; choose DEVONthink when file-library workflows matter more than a note-first setup.
01Side by side
| DEVONthink | Obsidian | |
|---|---|---|
| Starting price | Standard: $99 one-time | Free; Sync starts at $4/month annually |
| Free plan | No free plan listed | Free for personal note-taking; no sign-up required |
| Best for | Research-heavy Mac file libraries | Linked notes and personal knowledge management |
| Core strength | File organization and XRay folder, archive, Markdown previews | Local Markdown notes, links, graph, Canvas, plugins |
| Learning curve | Review ease-of-use score: 5.5/10 | Review ease-of-use score: 7/10 |
| Data and customization | Mac/iOS app; XRay previews folders, archives, Markdown | Local Markdown files, plugins, themes, open API |
| Team and seat costs | Standard: $99 for two Macs; Pro: $199 | Commercial: $50/user/year; Sync costs extra |
| Support | Support details not published on the vendor's site | Priority support included with Sync and Publish |
DEVONthink Choose DEVONthink if
- Choose DEVONthink if you manage research files on Mac.
- Choose DEVONthink if folder and archive previews matter.
- Choose DEVONthink if you want a one-time license.
Obsidian Choose Obsidian if
- Choose Obsidian if you want a free personal notes app.
- Choose Obsidian if you prefer local plain-text Markdown files.
- Choose Obsidian if you want links, plugins, and themes.
02Pricing compared
Obsidian is cheaper to start: its personal plan is free without limits or sign-up. Optional Sync costs $4 per user/month billed annually or $5 monthly. Publish costs $8 per site/month annually or $10 monthly. DEVONthink has no free plan listed; Standard is a $99 one-time license for two Macs, with one year of updates. Pro costs $199 once and includes two Mac seats, five mobile seats for DEVONthink To Go, and one year of updates. Server is $499 once. These are license prices, not monthly subscriptions, and extra seats or update extensions cost more. For a single person who mainly needs linked notes, Obsidian costs nothing; DEVONthink’s higher upfront price makes more sense when its file-library workflow is the reason you’re switching.
03Features and depth
These apps organize different things. Obsidian is built around local plain-text Markdown notes: link ideas, explore relationships in Graph view, arrange research in Canvas, and customize the workspace with plugins and themes. Its files remain accessible offline. Optional Sync adds end-to-end encryption, version history, shared vault collaboration, and priority support. DEVONthink is a Mac and iOS app for organizing and exploring files. Its free XRay Quick Look extension previews folders in list or grid view, browses ZIP, GZIP, and TAR archives without unpacking them, and renders Markdown using the same engine as DEVONthink. That makes it a better fit when you need to inspect folders and archives as well as documents. Obsidian’s center of gravity is connected thinking; DEVONthink’s is a research file library. Neither feature set is a direct substitute for the other.
04Ease of use and learning curve
Obsidian offers a straightforward starting point: create Markdown notes locally, link them, and add plugins or themes if you want more control. That flexibility can also mean more choices to manage. DEVONthink has a broader file-management focus, and a review describes it as more involved than basic archiving requires; it rates ease of use 5.5 out of 10. XRay can make folder and archive contents easier to preview, but it is an extension to a Mac workflow, not a simpler note-taking setup. If you want a free place to write and connect notes, start with Obsidian. If you need to work with a research collection of files, DEVONthink’s extra depth may justify the learning effort and license cost.
Questions people ask
Which is cheaper, DEVONthink or Obsidian?
Obsidian is cheaper to start: its personal plan is free without limits or sign-up. Sync is optional and costs $4 per user/month annually or $5 monthly. DEVONthink Standard is $99 one-time; Pro is $199. Both DEVONthink prices include one year of updates.
Can I use Obsidian without paying for Sync?
Yes. Obsidian’s personal plan is free without limits or sign-up, and notes are stored on your device as plain-text Markdown files that remain accessible offline. Sync is an optional paid service for syncing notes across devices, with end-to-end encryption and version history.
Which app is better for research files and archives?
DEVONthink is the closer fit if your research involves folders, documents, and archives. Its XRay extension previews folders and browses ZIP, GZIP, and TAR archives without unpacking them. Obsidian is more focused on Markdown notes, links, and visualizing relationships between ideas.
Does DEVONthink include mobile access?
DEVONthink Pro includes five mobile seats for DEVONthink To Go, according to the listed license details. Standard lists two seats for two Macs but no mobile seats. Obsidian’s optional Sync plan is the listed way to sync notes across devices; it costs $4 per user/month annually or $5 monthly.