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Marcus Sync

Reminders → Markdown

macOS 13+ · Menu Bar App

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What It Does

Marcus Sync lives in your menu bar and syncs Apple Reminders to Markdown files — perfect for Obsidian, Logseq, or any text-based productivity system.

Pick a Reminder list and a Markdown file. Marcus syncs your tasks automatically on a schedule or manually. One-way, additive sync — your manual edits are always preserved.

Features

Menu Bar Only

No dock icon, always accessible. Lives quietly in your menu bar.

Auto-Sync

Configurable intervals from 1 minute to 2 hours. Or sync manually anytime.

Preserves Manual Edits

One-way additive sync. Never deletes your hand-written notes.

Three Output Formats

Emoji (Obsidian Tasks), Dataview, and Kanban — pick the one that fits your workflow.

Insert Under Header

Place tasks under a specific heading in your file. Supports #, ##, and ### levels.

Any Markdown File

Works with any .md file. Obsidian vault, Logseq, or any Markdown-based system.

Optional Cleanup

Delete tasks from Reminders after sync if you want a clean list.

Native macOS

Built with SwiftUI and EventKit. No Electron, no web views, no bloat.

Output Formats

Emoji — Obsidian Tasks

## Reminders
- [ ] Buy milk 📅 2026-03-15 🔼
- [x] Call dentist ✅ 2026-03-10

Dataview

## Reminders
- [ ] Buy milk [due:: 2026-03-15] [priority:: high]
- [x] Call dentist [due:: 2026-03-10] [completed:: 2026-03-10]

Kanban

## Reminders
Column-based layout compatible with the Obsidian Kanban plugin

Privacy

Marcus only reads your selected Reminder list and writes to your chosen file. No data leaves your Mac. No accounts, no cloud, no telemetry. Requires only Reminders permission, requested on first launch.

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