According to AlphaMoat, in 2026-09 the AI app Obsidian saw 251,354 downloads over the last 30 days — ranked #368 of 2,900 AI apps, and #16 of 201 in Office & Collaboration; its top market is United States (24.8% of downloads).
What is Obsidian
Obsidian keeps notes as plain text Markdown files inside a local folder, so the knowledge base stays readable outside the app. On iPhone and iPad it adds graph view, themes, plugins, and quick actions on top of that same vault.
- 01Store notes as Markdown files in a local folder
- 02browse the connections between notes in graph view
- 03extend the vault with community plugins and themes
- 04keep vaults in iCloud and use a customisable toolbar
- 05pull down quick actions and pin the sidebar on a tablet
Free to download from the App Store.
Downloads by Country · Top 5
Popular in Office & Collaboration
Gmail for iOS brings Google's email app with Gemini assistance, spam blocking, and multi-account support.
+ Compare
Manage knowledge, tasks, meeting notes, and team projects in one unified workspace.
+ Compare
AI-assisted messaging, documents, meetings, and business tables for team work.
+ Compare
Capture notes, whiteboards and PDFs, then let AI summarize and organize them.
+ Compare
A multi-scene translation tool covering text, voice, and camera recognition.
+ Compare
A language tool offering multimodal translation and wording polish suggestions.
+ CompareMore from Dynalist
Data month: 2026-09 · Downloads and in-app purchase revenue are third-party estimates (trailing 30-day window), aggregated monthly. Revenue covers App Store and Google Play in-app purchases (including subscriptions) only — excluding Android app stores in mainland China and other payment channels such as web subscriptions. See methodology.