Local notes,
with AI in hand.

OV keeps notes, tasks, and schedule on your computer. The AI inside never changes a character without your approval, and calls the model with your key — never through us.

1Free · Open source · MITPress ⌘K from anywhere

Calendar

Your calendar is home.

Open the app and this month — plus today's to-dos — is the first thing you see. Tap a day to expand its schedule, tap an empty slot to add one.

  • Today's to-dos at a glance
  • Month & Day views with a live NOW line
  • Events double as checkable to-dos
  • Add fast with natural language

Files & vault

All yours — plain files in your folders.

Notes, images, and voice memos are all plain files in your vault. Your folder structure stays exactly as you made it — and opens just the same in Obsidian, iA Writer, or VS Code.

  • Organize in folders, drag to move
  • Full-text search over titles & bodies
  • Attach images & voice in one place
  • Plain .md — no data lock-in

Editor

Effortless writing, clean markdown out.

Hit / on an empty line and headings, callouts, tables, and embeds are right there. Link notes with [[wikilinks]]; the output is a .md file that opens anywhere.

  • Every block from the slash menu
  • Wikilinks & backlinks
  • Tables, callouts, embeds
  • Rock-solid Korean/CJK IME

AI assistant

A partner who knows your notes.
But never changes a single
character without asking.

Every change passes an approval gate. The AI can read, search, draft, and propose edits — but applying changes is always your call.

  • 15 helpful actions: read · search · create event · refine notes · ...
  • API key encrypted in the OS keychain
  • Data sent: system prompt + note titles + the messages you explicitly send
  • ⌘J reaches it from anywhere
Copilot
gpt-5.4-mini
Summarize today's schedule and make a retro note when done.
get_calendarFound 3 events
{ "date": "2026-05-25" }
Today's schedule is 3 events:
  • · 10:00 Design review (90 min)
  • · 13:00 Lunch (60 min)
  • · 14:00 Release prep (3 h)

Want me to create the retro note?

Proposal
Create note
Daily/2026-05-26-retro.md

One vault, every device

Write on desktop,
pick up on mobile.

The same vault syncs over iCloud Drive. Every note stays a plain .md file — it never passes through our servers, only your own iCloud.

Desktop · macOS

iCloud Drive

one vault · .md files

Mobile · iOS

  • Plain .md files

    Compatible with Obsidian, iA Writer, and VS Code. No data lock-in.

  • Auto-syncs over iCloud

    What you write on desktop shows up on mobile — nothing to set up.

  • Works offline

    Fully usable without a connection; it reconciles when you're back online.

  • Never through us

    Sync runs through your iCloud only. No telemetry, no middle server.

Get started in 30 seconds.
No signup. No cloud.

No account. No cloud. You'll be writing your first note within a minute.

macOS (Apple Silicon · Intel) · Windows · Linux · iOS/Android coming soon