How to Open and Edit Obsidian Notes on iPhone and Android

Short answer: an Obsidian vault is just a folder of plain Markdown (.md) files, so you can open and edit your notes on an iPhone, iPad or Android phone with any Markdown app. Markdown Reader & Editor - MD opens the files straight from Files, iCloud Drive or your file manager, shows them rendered, and follows [[WikiLinks]] between notes, so you can check or fix a note without opening Obsidian.

Why your Obsidian notes open anywhere

Obsidian does not lock your notes in a database. Each note is a .md text file inside the vault folder, and that folder lives wherever you keep it: iCloud Drive, a synced folder, Dropbox, or local storage. Any app that reads Markdown can open them.

That is useful when you only want to read a note, copy a snippet, or fix a typo and do not need the full Obsidian app.

Open and edit a note on iPhone or iPad

Install Markdown Reader & Editor - MD from the App Store.
In Files, find your vault folder (iCloud Drive, or the folder your sync app uses) and tap a .md note, or use Share and choose the app.
Read it rendered, with headings, tables, task lists and highlighted code blocks.
Switch to the editor, change the text and save. The file stays a normal .md file, so Obsidian sees the change next time it syncs.

Open and edit a note on Android

Install the app from Google Play: Markdown Reader & Editor.
Open your vault folder in the file manager, or tap Open inside the app and pick the note.
Tap a [[WikiLink]] to jump to the note it names, even when it sits in another folder of the vault.
Edit and save in place.

What works, and what does not

Works: headings, lists, task lists, tables, code blocks, links between notes, [[Name]] links, live preview while you type, find and replace, dark themes, and offline use with no account.
Not part of a Markdown viewer: Obsidian plugins, graph view, Canvas and query blocks such as Dataview. Those stay as plain text in the file. Your notes are safe, they just are not interpreted.
Sync: the app edits the file where it lives. Keep using whatever you use to sync the vault (iCloud Drive, Syncthing, Dropbox) and edits travel with it.

When to use this instead of Obsidian mobile

Use Obsidian's own mobile app for plugins, graph and a full vault workflow. Use a lightweight Markdown app when you want a note to open instantly, when you are reading someone else's Markdown folder, or when you want to edit one file without loading a whole vault.

FAQ

Can I open an Obsidian vault on iPhone without Obsidian? Yes. The vault is a normal folder of .md files, and a Markdown app can open any of them.

Will editing a note outside Obsidian break my vault? No. The note stays plain Markdown. Obsidian picks up the change like any other edit to the file.

Do [[WikiLinks]] work? Yes, tapping a [[Name]] link opens the note with that name from the same folder tree.

Is there an Obsidian alternative for Android that opens .md files? Markdown Reader & Editor opens and edits them offline, with no account.

Is it free? The app is free to download.

Download Markdown Reader & Editor - MD on the App Store · Get it on Google Play for Android

~/cosmovex/untitled.md unsaved

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Meanwhile, the toolkit

~/cosmovex/home.md · rendered with Markdown Editor & MD Viewer

A Markdown editor good enough to write its own homepage.

This page is a Markdown document. You're reading the rendered preview — press or hit if you don't believe it. That round trip — plain text in, a clean document out — is what Markdown Editor & MD Viewer does on your Android phone. Free, offline, no account.

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NEWAspenote: Offline Voice to TextIt writes it down. On your phone.Runs Offline · Nothing Uploaded · Summary & Actions

NEWHostPilot: PHP Server & SQLTurn your phone into a web server.PHP 8.4 & SQLite · Stays Running · SQL Console

## The rest of the toolkit

One app per job. No 200 MB do-everything bloat.

App	Job	Rating
Markdown Editor & MD Viewer	Write and preview Markdown on mobile.	4.7★ · 5K+	install ios
WebEva: Build Websites & Code	Build websites from your phone.	4.4★ · 5K+	install ios
PDF Viewer & Editor - AI	Edit, convert & sign PDFs on mobile.	4.9★ · 1K+	install ios
HTML Viewer & Editor - Code	View & edit HTML on mobile.	4.6★ · 1K+	install ios
SQLite Editor & SQL Learner	Manage SQLite databases on mobile.	5.0★ · 1K+	install
Python IDE - Offline Compiler	Write and run Python on your phone.	4.1★ · 1K+	install
Aspenote: Offline Voice to Text	It writes it down. On your phone.	—	install
HostPilot: PHP Server & SQL	Turn your phone into a web server.	—	install
DevBuddy: Offline Dev Toolkit	Your pocket developer toolkit.	—	install ios
ShellPilot - Batch SSH Client	SSH terminal & SFTP on the go.	— · 1K+	install ios
API Client -REST & HTTP Tester	Test APIs anywhere, anytime.	— · 500+	install ios
JSON Editor - Viewer & Format	View, edit & format JSON instantly.	— · 500+	install ios
Java & Kotlin Compiler IDE	Write and run Java on your phone.	4.4★ · 1K+	install
XML Viewer & Editor	View, edit & validate XML on mobile.	— · 5K+	install ios
Open CSV — Viewer & Editor	Open and edit CSV files on mobile.	— · 500+	install ios
JavaScript Editor — React IDE	Run JavaScript and React on your phone.	— · 1K+	install
Image to SVG Converter, Viewer	Convert images to SVG and edit vectors on mobile.	— · 1K+	install
YAML / YML Viewer & Editor	View, edit & validate YAML instantly.	— · 500+	install
Network Toolkit: WiFi IP Tools	Network utilities and diagnostic tools.	— · 500+	install
Code Editor - Text & Notepad	Edit text files on mobile.	— · 500+	install
C / C++ Compiler IDE	Compile & run C and C++ on your phone.	—	install
Diagram Maker: Flow & ERD	Draw flowcharts & ERDs on mobile.	—	install
QR Scanner & Generator	Scan codes with confidence	—	install
Zip Extractor — Unzip RAR 7Z	Open ZIP, RAR, and 7Z files	—	install
PromptCrate: AI Prompt Manager	Your personal AI prompt library	—	install

## Free web tools

Background Remover Snapglow SQLite Viewer QueryDrill

## Questions, answered

Is there a free Markdown editor for Android?

Yes — Markdown Editor & MD Viewer is free on Google Play. It gives you a split-view editor with live preview, syntax highlighting, and HTML/PDF export, and it works fully offline with no account.

Can I edit Markdown from my phone on a desktop browser?

Markdown Editor & MD Viewer includes a Live Server: your phone hosts the document over Wi-Fi and you edit it from any desktop browser with two-way live sync. The file never leaves your device.

Can I make Mermaid diagrams on Android?

Yes — the built-in Mermaid Studio turns plain text into flowcharts, sequence and class diagrams, with pan/zoom and SVG export, right on your phone.

Can I turn Markdown into slides or a PDF on my phone?

Presentation Mode turns any Markdown document into a fullscreen slide deck, and export produces styled HTML or print-ready PDF — all generated on-device.

## From the journal

We're a small studio with one rule: each app does a single job well, works offline, and never asks who you are.