Comparison

Obsidian vs Posti

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

Head to head
About

Obsidian

Organize your thoughts and ideas with a powerful knowledge base that stores your notes as plain text Markdown files. Access your personal second brain on any device, with extensive customization options and community-driven plugins.

Highlights
  • Local Markdown file storage
  • Customizable toolbar
  • Graph view
  • Community plugins
  • Themes
  • Sidebar pinning
  • iCloud vaults
Features
Read full description

Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files. It is a second brain, for you, forever. Now available on the go for iOS! Features include: - Customizable toolbar - Pull down quick actions - Graph view - Community plugins - Themes - Sidebar pinning for tablet - iCloud vaults

About

Posti

Features
Read full description

Posti is the shared workspace for brands and their content creators. • Coordinate content — see what's required, brainstorm ideas, and keep every creator on the same schedule. • Connect Instagram — creators can link their own Instagram professional account to surface their posts to the team. • Track performance — view post insights (reach, views, likes, comments, saves, shares) in one place. • Stay in sync — built-in messaging, reminders, and announcements keep the team aligned.

Screenshots

Obsidian4 screens
Posti4 screens

Verdict

The call

The clearest difference is update cadence: Posti at every 5 days against Obsidian's every 3 weeks. Obsidian's advantage is chart position (#124 vs unranked) and device support (3 vs 1). On price, ads, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Obsidian ships an update every 3 weeks, Posti every 5 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 8 level
Obsidian versus Posti: the parameters behind the verdict, then further details
ParameterObsidianPosti
PriceFreeFree
Rating4.5 (2.8K ratings) — better—
Positive reviews62.0% of reviews—
Number of ratings2.8K — better—
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#124 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.4
Further details — not scored
Size39 MB56 MB
Age rating4+4+
DeveloperDynalist Inc.ECRUZN LLC

Bugs and requests

Obsidian

Reported bugs

3 issues
  • Sync issues leading to data loss
  • Freezing and crashing on mobile devices
  • Editing bugs and text input issues

Requested features

5 requests
  • Improved sorting and organization options
  • WYSIWYG editing on mobile
  • Better integration with other cloud storage services
  • More intuitive onboarding process for new users
  • Native mobile widgets and share sheet integration

Posti

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Obsidian

No in-app purchases

None

Posti

No in-app purchases

Questions

Is Obsidian free?
Obsidian is free to download, with no in-app purchases.
Is Posti free?
Posti is free to download, with no in-app purchases.
Do Obsidian or Posti have ads?
Neither Obsidian nor Posti shows ads.
Which is updated more often, Obsidian or Posti?
Obsidian ships an update every 3 weeks, and Posti every 5 days. Most recently, Obsidian was updated on November 12, 2026 and Posti on October 31, 2026.

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