The fastest way from thought to daily note.
Type double-slash anywhere on your Mac to capture ideas, reminders, and clipboard fragments without leaving your keyboard or switching windows.
$19 one-time after trial · No account required · //note, //timer, //calc & more free forever
One shortcut, every destination you need
Type // anywhere on your Mac. Free targets work forever — Pro targets unlock during your 14-day trial.
Free forever
no trial, no cardZero-setup quick capture
Works the moment you install. Appends a timestamped line to ~/Documents/Doubleslash/Quick Capture.md.
Native Reminders + due dates
Drops tasks into Apple Reminders via EventKit. Natural language dates work — tomorrow at 5pm becomes a due date and alarm.
System clipboard sync
Stage long commands or text blocks on the pasteboard — with atomic backup/restore so your previous clipboard isn't lost.
Countdown timer
Start a focus timer from anywhere. Live countdown next to the menu bar icon, pending list in Settings → Scheduled, and a macOS notification when time is up — not the Clock app.
Quick calculator
Gray live result while you type (20 free previews, unlimited on Pro). Press Enter to copy — 15% of 847 and grouped math just work.
Pro
14-day full trial · $19 lifetimeOne-shot alarm
One-shot macOS notification at a parsed time. Menu bar countdown while pending; view or cancel in Settings → Scheduled — not the Clock app.
Calendar events
Creates a timed 1-hour block on your default calendar from natural language — standup tomorrow 2pm.
Vault daily-note capture
Appends to today's Obsidian daily note without opening the app. Reads your vault's daily-notes folder, date format, and template automatically.
Graph journal capture
Appends outliner bullets to today's Logseq journal. Prefix with TODO to create a native Logseq TODO item.
Channels & DMs
Pick a channel or DM from a fuzzy local picker, then post — token stored in macOS Keychain, opt-in only.
A capture HUD that stays out of the way
Keyboard-first overlay. No Dock icon. No chrome. Enter submits, Escape cancels.
Type // anywhere on your Mac
A global Accessibility event tap watches for double-slash commands in any app — then strips the trigger from the host so your draft stays clean.
Caret-anchored capture panel
A borderless HUD appears near your text caret. Works across Spaces and fullscreen apps. Native Cmd+C / V / A / Z inside the field.
Capture never lost
If a target write fails, your text is saved to a local recovery log with owner-only permissions — and the HUD tells you where to find it.
Secure input & secrets blocked
Password fields and Secure Input mode are skipped. Excluded apps and known secret patterns in the keystroke buffer are blocked before a trigger can fire.
Menu bar agent + live timer
No Dock icon. Settings, Scheduled timers/alarms, and Quit are one click away. Active //timer or //alarm runs show a ticking countdown beside the icon.
Optional local MCP
Enable a loopback-only server on 127.0.0.1:9987 with Keychain token auth — for agent tooling on your Mac, never the public internet.
"Capture and parsing happen 100% locally, on your Mac, always. The only time anything leaves your device is when you explicitly connect a target that requires it — like sending a message to Slack. Nothing is ever sent anywhere without you configuring it yourself."
No cloud database, no tracking pixels. Doubleslash's core targets — //note, //copy, //reminders, //timer, //calc — never touch the network. Pro integrations (//obsidian, //logseq, //slack, //alarm, //calendar) run locally except Slack posts and license activation, both opt-in.
Transparent Architecture
We believe in complete transparency about how Doubleslash hooks into macOS.
No. Doubleslash leverages Apple's standard Accessibility API (specifically CGEventTap) to listen for the double-slash (//) key sequence.
The moment it detects //, it triggers the small overlay capture panel. Every other keystroke is instantly passed through untouched and discarded from memory. Capture and parsing happen 100% locally on your Mac. The only times Doubleslash ever touches the network are when you explicitly configure features that require it (such as Slack), during one-time license activation, or over secure local loopback for the optional MCP server.
Doubleslash is solo-built, and Apple's developer notarization program costs $99/year — a cost I'll gladly take on as soon as the first sales come in. Until then, Doubleslash ships ad-hoc signed.
This means Gatekeeper will show a warning on first launch. The workaround is simple, standard, and safe:
- Locate Doubleslash in your
Applicationsfolder. - Right-click (or Control-click) the app and select Open.
- In the confirmation dialog that appears, click Open.
This registers an exception for Doubleslash permanently on your Mac. You won't see the warning again.
Doubleslash is designed from the ground up to be a local-first application. Your keystrokes, captured texts, and databases never leave your machine unless you explicitly configure a feature that requires it.
Doubleslash's core capture engine — //note, //copy, //reminders, //timer, //calc — never touches the network. //slack sends to Slack only when you configure a token and type a Slack trigger. //alarm and //calendar use local macOS notifications and Calendar. You can review permissions any time in Settings → Privacy & Permissions.
Other optional network activity:
- One-Time License Activation: When you purchase Doubleslash and activate your key, the app makes a single, secure HTTPS request to Lemon Squeezy at
api.lemonsqueezy.comto verify your purchase. - Optional Local MCP Server: If enabled in Settings, Doubleslash runs a local-only server on
127.0.0.1:9987— loopback-only, no external connections.
Failed captures are never lost: if a target write fails, your text is saved to a local recovery log on your Mac (owner-only permissions).
Support a bootstrapping dev
No recurring monthly subscriptions. One lifetime purchase.
- Free forever: //note, //copy, //reminders, //timer, //calc
- Pro (trial + license): //alarm, //calendar, //obsidian, //logseq, //slack
- Menu-bar countdown · Settings → Scheduled · caret-anchored overlay
- Capture-never-lost recovery log · secure-input bypass · optional local MCP
- Offline-first — local parsing, no account required
- License key delivered instantly to your inbox after purchase