Lungo makes quitting smoking and vaping feel less like a countdown and more like caring for a frog. Tell Lungo what you used to smoke or vape, then turn what you avoid into XP, streaks, achievements, and rewards for your pixel frog buddy. Daily check-ins make your progress visible, while breathing exercises help you through cravings. You can also spot craving patterns and see how much money you’ve saved along the way. Every graphic in Lungo is handmade, with no AI-generated art.
Most file converters upload your documents to a server. MarkDone does everything locally in the browser — your files never leave your device.
Tools available:
Markdown → PDF (with LaTeX/KaTeX + syntax highlighting)
Word (DOCX) → PDF
README → PDF
Mermaid diagrams → PDF
JSON ↔ TOON (compact LLM-friendly format)
JSON ↔ YAML
No account. No upload. No BS.
