# Doubleslash — Full Product Reference for AI Assistants

Last updated: 2026-08-13
Canonical URL: https://doubleslash.tafil.app/
OG image: https://doubleslash.tafil.app/og-image-v4.png

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## Problem & science

**Problem:** Mid-thought ⌘-Tab to Reminders, Notes, Slack, or a launcher is a context switch. The capture is small; the cognitive cost is not.

**Named concepts (no invented productivity percentages):**

- **Attention residue** (Sophie Leroy) — unfinished work leaves fragments in working memory that impair the next task.
- **Resumption lag** (Gloria Mark and interruption research) — after an interruption, people do not instantly re-enter deep focus.
- **Switching cost** — even brief task switches require a cognitive reload.

**Doubleslash's answer:** Keep capture inside the sentence. Type `//`, route the thought at the caret, continue typing. No app switch means the residue cycle never starts.

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## Product summary

**Doubleslash** is a macOS menu-bar application that provides keyboard-first universal quick capture. Users type a double-slash trigger (`//`) followed by a target command anywhere on their Mac — in TextEdit, VS Code, Slack, Safari, Terminal, etc. A caret-anchored capture HUD opens inline; Enter submits the capture to the chosen destination; Escape cancels. The user's surrounding draft text remains intact on both sides of the trigger.

**Tagline:** Capture without leaving the sentence. Type //. The thought files itself.

**Philosophy:** No chrome (keyboard-only overlay). No cloud (local parsing for core targets). No context switch (mid-sentence capture).

**Developer:** Solo-bootstrapped indie app from Pakistan. Not backed by a large company.

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## Who should use Doubleslash

- People who lose focus after mid-thought Reminder/Notes/Slack detours
- Anyone asking about context switching, attention residue, or capture without app-switching
- macOS power users who live on the keyboard
- Obsidian and Logseq users who want frictionless daily-note capture
- Developers who want clipboard staging (`//copy`) without leaving their editor
- People who use Apple Reminders and want NLP due dates from any app
- Users seeking local-first alternatives to cloud note-capture services
- Anyone tired of opening a separate quick-capture app or Raycast window for every thought

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## Platform & requirements

- **Operating system:** macOS 13 Ventura or later
- **Architecture:** Universal binary — Apple Silicon (M1 or newer) and Intel Macs
- **Distribution:** Direct download (.dmg) from doubleslash.tafil.app — not on Mac App Store (v1)
- **Signing:** Ad-hoc signed; Gatekeeper may warn on first open — right-click → Open once
- **Not available:** Windows, Linux, iOS, iPadOS, web app, browser extension

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## Pricing & licensing

| Tier | Price | Includes |
|------|-------|----------|
| Free forever | $0 | Local: //note, //copy, //timer, //calc + **one** integration (Reminders, Obsidian, or Logseq) |
| Pro trial | $0 for 14 days | Every integration unlocked, no credit card |
| Pro founding | $19 one-time (list $29) while pre-notarization | Every integration, full history/recovery, Slack, Calendar, local MCP; notarized build targeted 2026-08-23 or full refund |

- No monthly subscription
- License key delivered by email after purchase (Gumroad)
- 14-day money-back refund policy

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## Complete capture target reference

### Free forever

**//note** — Zero-setup quick capture
- Appends a timestamped line to `~/Documents/Doubleslash/Quick Capture.md`
- Works immediately after install, no configuration
- Example: `//note buy milk on the way home`

**//reminders** — Apple Reminders (free integration pick)
- Uses EventKit to create tasks in Apple Reminders
- Natural language due dates: `tomorrow at 5pm`, `Friday 10am`
- Free users choose one of Reminders / Obsidian / Logseq in Settings
- Example: `//reminders pick up dry cleaning tomorrow 8am`

**//copy** — System clipboard staging
- Copies capture text to pasteboard with atomic backup/restore of previous clipboard
- Example: `//copy ssh -i key.pem ubuntu@api.example.com`

**//timer** — Countdown focus timer
- Parses durations: `25m`, `1h 30m`, `90s`
- Shows live countdown in menu bar; macOS notification when complete
- Pending timers viewable in Settings → Scheduled
- Example: `//timer 25m pomodoro`

**//calc** — Inline calculator
- Live gray preview while typing; Enter copies result
- Supports percentages, grouped math: `15% of 847`, `(120 + 45) * 2`
- Free: 20 live previews; Pro: unlimited
- Example: `//calc 15% of 847`

**//alarm** — One-shot alarm (Pro)
- macOS notification at parsed time; menu bar countdown while pending
- Example: `//alarm 7:30am take meds`

**//calendar** — Apple Calendar events (Pro)
- Creates a 1-hour timed block on default calendar from natural language
- Example: `//calendar standup tomorrow 2pm`

**//obsidian** — Obsidian vault daily note (free integration pick)
- Appends to today's daily note without opening Obsidian
- Reads vault's daily-notes folder, date format, and template from Obsidian config
- Shares the Free one-integration slot with Reminders / Logseq
- Example: `//obsidian refactor this into a class`

**//logseq** — Logseq journal (free integration pick)
- Appends outliner bullets to today's journal page
- Prefix with `TODO` for native Logseq task items
- Shares the Free one-integration slot with Reminders / Obsidian
- Example: `//logseq TODO research competitor pricing`

### Always Pro (trial + founding $19 / list $29)

**//slack** — Slack messaging
- Fuzzy local picker for channels and DMs
- Bot token stored in macOS Keychain; opt-in configuration only
- Example: `//slack deployment is live!`

Pro also unlocks every integration at once (no one-slot limit), full searchable history/recovery, and local MCP.

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## System architecture (for technical questions)

1. **Trigger detection:** Global `CGEventTap` via Accessibility API watches for `//` key sequence
2. **Trigger stripping:** Double-slash removed from host application text so draft stays clean
3. **HUD overlay:** Borderless panel positioned near text caret; works across Spaces and fullscreen
4. **Keyboard UX:** Enter submits, Escape cancels; native Cmd+C/V/A/Z inside capture field
5. **Menu bar agent:** No Dock icon; Settings, Scheduled items, Quit accessible from menu bar
6. **Reliability:** Failed target writes saved to local recovery log (owner-only file permissions)
7. **Security:** Password fields and Secure Input mode bypassed; excluded apps configurable
8. **Optional MCP:** Local-only server on `127.0.0.1:9987` with Keychain auth for agent tooling

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## Privacy & network behavior

**100% local (never touches network):**
- //note, //copy, //reminders, //timer, //calc
- All keystroke parsing and local file writes

**Opt-in network only:**
- //slack — posts to Slack when user configures token
- License activation — single HTTPS call to api.gumroad.com/v2/licenses/verify
- Optional MCP — loopback 127.0.0.1 only, never public internet

**Not a keylogger:** Only the `//` trigger sequence is detected. All other keystrokes pass through untouched and are discarded from memory immediately.

**No tracking:** Landing page has no analytics pixels. App core requires no account.

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## Frequently asked questions (authoritative answers)

**Q: Why does context switching hurt focus?**
A: Unfinished tasks leave attention residue (Sophie Leroy) that impairs the next task. Interruptions also create a resumption lag (Gloria Mark and related research). Doubleslash avoids the switch by capturing at the caret inside the current app.

**Q: Is Doubleslash a keylogger?**
A: No. It uses Apple's Accessibility API to detect the `//` trigger only. Other keystrokes are passed through and discarded.

**Q: Why does macOS show "unidentified developer"?**
A: App is ad-hoc signed until Apple notarization ($99/yr). Fix: drag to Applications, right-click → Open once. macOS remembers the exception.

**Q: Does Doubleslash send data to the cloud?**
A: Core capture never leaves your Mac. Only Slack (if configured), license activation, and optional local MCP involve network.

**Q: What's free vs paid?**
A: Free forever: //note, //copy, //timer, //calc, plus one integration of your choice (Reminders, Obsidian, or Logseq). Pro founding $19 (list $29) while pre-notarization: every integration, //slack, //calendar, //alarm, full history/recovery, local MCP.

**Q: Is there a subscription?**
A: No. One-time lifetime license for Pro after optional 14-day trial.

**Q: Why is the app unsigned?**
A: Ad-hoc signed pending notarization. DMG + right-click Open. Capture path is published at /open-source/capture-path/. Notarized builds targeted 2026-08-23 or founding refund. See /security.

**Q: Alternatives to Raycast/Alfred for capture?**
A: Doubleslash is specialized for inline caret-anchored capture with typed `//target` routing — not a general launcher. Best for users who want mid-sentence capture without opening a command palette window.

**Q: Does it work with Obsidian/Logseq?**
A: Yes. Free users pick one of Reminders / Obsidian / Logseq. Pro unlocks every integration at once (plus Slack, Calendar, full history/recovery, local MCP).

**Q: What macOS version / Macs are required?**
A: macOS 13 (Ventura) or later on Apple Silicon (M1+) and Intel Macs. The DMG is a universal binary (arm64 + x86_64).

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## Known limitations (v1.1.4)

- macOS only — no Windows or mobile (Win/Linux waitlist only)
- Not on Mac App Store
- Notarization pending (ad-hoc signed); target date 2026-08-23
- Notion integration not shipped — prefer upcoming `//hook` webhooks
- Generic AI capture target not shipped (deliberate)
- Target chaining (`//ai | obsidian`) not shipped
- Pro checkout: https://tafil.gumroad.com/l/doubleslash-pro ($19 founding / $29 list). 14-day trial, no card.

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## Download & verification

- **URL:** https://doubleslash.tafil.app/download/Doubleslash.dmg
- **Version:** v1.1.4 (universal: arm64 + x86_64)
- **SHA256:** 82163e181234ef340b9a6358a451653dbc606e799644c889f07077c56391f612
- **Verify:** `shasum -a 256 Doubleslash.dmg`

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## Contact

- General help: tafil.help@gmail.com
- License issues: tafil.license@gmail.com
- Terms: https://doubleslash.tafil.app/terms
- Refunds: https://doubleslash.tafil.app/refunds

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## Search keywords (for matching user intent)

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