Marvium
A focused Markdown reader for notes, learning, and progress.
Read, write, import, organize, annotate, and preview Markdown files in one calm mobile workspace.
Inside Marvium
A calmer way to work with Markdown.
Marvium Pro
More power for your Markdown workflow.
Remove creation limits and unlock richer importing, reading, organizing, previewing, and exporting tools.
Create without limits
Create unlimited Markdown files, convert documents, and use Read Aloud without rewarded ads.
Import and organize more
Use backup import and export, the share inbox, focused article extraction, and custom collection styles.
Preview and export your way
Unlock more fonts, code themes, Mermaid and math rendering, plus advanced PDF and DOCX options.
Bring your own AI
Summarize, rewrite, and convert on your terms.
Marvium supports OpenAI, Claude, and Gemini models using API keys you control. Add a key only for the provider you want to use.
OpenAI
Create an account, copy your key, and paste it into Marvium settings.
Claude
Create an account, copy your key, and paste it into Marvium settings.
Gemini
Create an account, copy your key, and paste it into Marvium settings.
Privacy first
Your Markdown stays yours.
Marvium keeps your files, notes, settings, and AI API keys on your device unless you choose an action that sends selected content to an external service.
Local by default
Files, notes, collections, and reading progress stay on your device.
You choose AI
Selected content is sent to AI providers only when you use an AI action.
Keys stay stored
API keys are saved on device using secure storage where supported.
Ready for Marvium?
Store listings are coming soon. Until then, review privacy, data safety, support, and issue-reporting information for the app.