ObsiKO: AI Note + Mindmap

ObsiKO: AI Note + Mindmap

Your second brain, connected

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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? Everyday writing, LLM wikis, ontologies, Zettelkasten, mindmaps, reading logs, codices, schedules, file conversion — one app, no account or subscription. Obsidian vaults (.md/.canvas/.base) open as-is. (AI runs on your own API key; with Apple Intelligence on, it can run on the device with no key.) ■ You see it first, before anything changes · AI rewrites arrive as a suggestion card — nothing changes until you press Replace · The AI agent works on a copy; only what you pick reaches your notes · Before the first send to an outside AI, it shows what goes where and sends only if you allow ■ Share to the web, sync between devices (GitHub) · "Share to the web" publishes a note at one address — theme, tables and images intact, comments too · The text lives only in your GitHub account, never on our servers; "Stop sharing" takes it down · Sync runs through your own repository and only ever deletes to the trash ■ Write once, it connects itself · A "color" property colors the tab, header, tree icon, .base and codex cards. Define your own types and relations too · Type "book" pops a search that fills the rest; "project" adds start/due to the calendar · Highlight a PDF and quotes collect into a note of the same name, searchable and on the graph · Wiki links, types, relations and PARA form one constellation — more links, brighter star ■ Infinite mindmap canvas (.canvas) · Apple Pencil drawing — turn a sketch into an AI image. Have AI build an editable mindmap, or hand it yours · Auto-build from a note's links, auto-layout, embeds, groups, relations. 5 styles, 10+ presets. Drop a URL or file to add a card ■ .base files and search · Projects, kanban, cards, charts, a library (book/paper search), PARA, a budget that pastes receipts. Dataview queries become tables · Filenames, full text, Korean jamo, semantic search — pin results, bookmark a query, or ask Siri ■ A dashboard and themes you arrange · 50+ widgets plus query and embed boards — calendars, to-dos, habit trackers, stats. 20+ themes, your own fonts ■ Markdown and a writing helper · Calm editing tuned for Korean. Format bar and cheat sheet, Mermaid, 20+ charts, inline drawing, video in a note · 70+ structures across 13 genres (Hero's Journey, Save the Cat, SCQA, character sheets), Socratic questions and style polish · Spell check, dictionaries, device TTS, a saved assistant role, on-device translation ■ Schedules and viewers · A date in any file lands on the calendar (Obsidian Tasks compatible) — year/month/week/day, timeline, widget, reminders · One frontmatter line switches the viewer: book, web novel, messenger, visual novel, codex ■ Clipping and conversion · The article body and photos become a note, not just the URL — share button or RSS · One-click Markdown for doc/docx, PDF, hwp/hwpx — one file or a folder; a read-only panel opens dozens more · Import from Apple Notes, Notion, Evernote, Bear or Logseq — always into a new folder · Highlight PDFs and Markdown to insert or quote. AI OCR and transcription (labelled by speaker) ■ AI agent · Add an API key and go (Claude, Gemini, GPT) — the app is complete without one · Builds mindmaps and .base tables on your phone and reads existing ones. Read-aloud and images in the editor · File creation, automatic memory, LLM wikis, ontology and Zettelkasten design, MCP. Bulk work is desktop-only ■ Export, images, and everything else · Marp properties make a deck. Export to PDF, HWPX, DOCX, EPUB, HTML, ZIP, wiki markup · Dictate on iPhone (on device), Control Center, Lock Screen and Home widgets, Watch quick notes · Ready for iOS 27 — Markdown round-trips with Apple Notes, the new Siri can add to a note, 4×6 widget · Image editing, free image search, colors panel, routines, palette, focus timer, screen lock All of it is free. No account, no payment, a small download.
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What's New in ObsiKO

1.4.1

October 10, 2026

■ New in 1.4.1 The dictionary, right where you write · Repeated words → similar words — in the Writing Helper's Tighten view, tap [Synonyms] on a "'친구가' repeated 5 times" card and a similar word goes in with the right form and particle (친구가 → 벗이). · Plainer words — spell-check results now suggest 359 plainer words recommended by the National Institute of Korean Language (오뎅 → 어묵, 레시피 → 조리법). One tap replaces every use in the note, particles included. · In my notes — the dictionary shows the sentences where you used the word. Smarter spell check · Catches far more: 좋았을텐데 → 좋았을 텐데, 알아봐주세요 → 알아봐 주세요, 학생이였다 → 학생이었다, and phone typos (합니적인 → 합리적인). · About 270 web-novel genre words (이동마법, 각성자, 회빙환) and foreign names and titles are no longer flagged. · Fixing items no longer reloads the list, and long stretches with no spaces fold up with [Preview] and [Add spaces]. · If a very long note was only partly checked, it tells you so instead of saying "no errors". · New words missing from the dictionary can be sent with [Suggest as a new word] from the flag — only the word, never your sentence. Pre-publish check — mixed “ ” and " " quotes are unified in one go, and flipped quotes like “예쁘죠?“ get [Fix direction]. Living themes — Ink Wash gets rice-paper grain, bamboo shadows and a seal-stamp bookmark; Autumn Field gets maple shadows and a leaf bookmark that turns red; Ancient gets weathered old paper and a leather-strap bookmark. Colors shift with the time of day. AI chat can use the ObsiKO Korean Dictionary and spell check directly ("check the spelling in this paragraph"). · On iPad, a pinned right panel opens and switches instantly without the slide animation. + Other improvements and bug fixes

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