ObsiKO: AI Note + Mindmap

Tired of converting files or picking plugins? Spent the day on settings and never wrote a line? Plenty of features, none of them talking to each other?

Writing, knowledge management, mind maps, reading logs, codices, schedules, file conversion — all in ObsiKO, with no login, payment or subscription. Obsidian vaults (.md·.canvas·.base) open as-is.
(AI uses your own API key. With Apple Intelligence on, no key needed.)

■ Made for iPhone Duo
· Folded: floating glass buttons and your favorite menus on the right strip
· Unfolded: an iPad-style layout with a pinned side panel, books in two pages
· Half-folded: the app on top, the keyboard below — like a small laptop

■ Built for Korean
· A Korean dictionary and spell checker from the National Institute of Korean Language's data — no key
· A "Korean word of the day" widget

■ A focus timer on your Lock Screen
· A dial like a real pomodoro clock — tap or drag the ticks in 1-minute steps
· Start from the widget without opening the app; time left on the Lock Screen, in StandBy and the Dynamic Island

■ Share and sync (GitHub)
· "Share to the web" opens a note at one address — theme, tables, images, comments. Stored in your GitHub, not on our servers
· Sync devices through your own repository. Share your LLM wiki as one file or a subscription link that follows your edits

■ Write once, it connects itself
· One "color" property tints tabs, headers, tree icons, .base and codex cards
· Type "book" and a search fills in the rest; "project" adds dates to the calendar
· Highlight a PDF and quotes collect in a note of the same name. Define your own types and relations

■ A graph like the night sky
· Links, types, relations and PARA form one constellation — more links, brighter stars
· Names appear as you zoom in, and your layout is remembered

■ Infinite mind-map canvas (.canvas)
· Apple Pencil drawing, sketches into AI images. Ask the AI and it builds, sizes and colors the map
· Grow cards with Enter and Tab, drop in URLs and files. 5 styles, 10+ presets, auto-built maps & dungeons

■ .base files and search
· Projects, kanban, cards, charts, a library, PARA and a budget. Dataview queries become tables
· Search filenames, full text, Korean jamo, meaning and word forms. Find books and papers, or just ask Siri

■ Dashboard, themes and Markdown
· 50+ widgets — calendar, habits, stats, mini games, AI briefing, tarot. 20+ themes, your own fonts
· Calm editing tuned for Korean, a format bar, Mermaid, 20+ charts, inline drawing, embeds

■ Writing helper
· 70+ structures across 13 genres (Hero's Journey, Save the Cat, TRPG characters, world sheets)
· Socratic questions, genre feedback, style polish, your own assistants, on-device translation, read-aloud
· One search across dictionaries, thesaurus, hanja, proverbs and Wikipedia

■ Schedules
· A date in any file lands on the calendar (Obsidian Tasks compatible) — year to timeline views, widgets, writing reminders

■ Viewers from one line of front matter
· Book view (two pages, page turns that follow your finger, covers in the note's color), web-novel view (platform presets)
· Messenger and visual-novel views — record the screen and it's a short. Codex view with auto profile icons

■ Clip, convert, export
· Web clipper and RSS. Import from Apple Notes, Notion, Evernote, Bear, Logseq and Roam
· doc, docx, PDF, hwp and hwpx to Markdown, a reference view for dozens of formats, AI OCR and transcription
· Slides with Marp. Export to PDF, HWPX, DOCX, EPUB, HTML, ZIP and wikis

■ AI agent
· Just add an API key (Claude, Gemini, GPT) — the app works fully without one
· Mind maps and tables on your phone, voice input, and a plan card before big changes
· Auto memory, LLM wikis, Zettelkasten folders, slash commands, a prompt helper, MCP

No login, no payment, no subscription, no ads. Tell us about bugs anytime.

■ Supported
· iPhone, iPad, Mac, Apple Watch / Korean, English, Japanese, Chinese (Traditional, Simplified)
· Ready for iOS 27 and iPhone Duo