KeyStack: Env Secrets Manager
Secure Dotenv & API Key Vault
Only for Mac
$9.99
Mac
Keep secrets in macOS Keychain. Activate a real .env file from the menu bar only while you work, with timed deletion and automatic cleanup on sleep or lock.
KeyStack is a native macOS developer tool that stores your environment variables in the system Keychain — encrypted, organized, and never written to a plain text file that could be accidentally committed.
Every developer knows the pain: .env files spread across dozens of project folders, inconsistently named, accidentally committed, or left behind on old machines. KeyStack solves this with a secure, searchable vault backed by macOS Keychain and a clean native interface built for the way developers actually work.
SINGLE AUTH FOR YOUR ENTIRE VAULT
Authenticate once per session using Touch ID or your Mac login password. Every subsequent reveal reads straight from the Keychain — no repeated prompts. The vault locks automatically the moment you switch to another app.
PROJECTS & ENVIRONMENTS
Organize variables by project and tag each one with its environment: Development, Staging, Production, or Custom. Filter the list instantly to see exactly what you need. Link variables to multiple projects — a shared DATABASE_URL can belong to both your API and your worker process.
IMPORT FROM .ENV FILES
Point KeyStack at any project folder and it scans for .env, .env.local, .env.development, .env.staging, .env.production, and .env.test. Preview every variable before importing, with duplicates flagged automatically so nothing gets overwritten by accident. Each import is scoped to the project you choose.
EXPORT WHEN YOU NEED IT
Export any selection of variables to a .env file with one click — the save panel defaults to your project folder and pre-fills .env.local as the filename. Export a .env.example (keys only, no values) to check into source control. Or copy the whole set to the clipboard in KEY=value format; the clipboard clears automatically after 30 seconds so secrets don't linger.
ENVIRONMENT DIFF VIEW
Compare your variables across environments side-by-side. Instantly see which keys exist in Development but are missing from Production — the most common source of "works on my machine" bugs.
START FAST WITH STACK TEMPLATES
New project? Choose from built-in templates for Next.js + Supabase, Next.js + Postgres, Django + Postgres, Rails + Postgres, Node.js/Express, and Firebase. The template pre-populates the right variable names with descriptions and marks secrets accordingly — so you know exactly what to fill in.
ROTATION REMINDERS — WITH IN-APP TRACKING
Set a rotation interval on any secret (30, 60, 90, 180, or 365 days). KeyStack delivers a macOS notification when it's time to rotate — and tapping the notification brings you straight to that variable. Inside the app, overdue variables are flagged with a red warning badge directly in the list. A one-click "Needs Rotation" filter shows everything due or overdue at a glance. Once you've rotated a secret, mark it done — the schedule resets automatically.
BATCH OPERATIONS
Select multiple variables at once and act on the whole group: copy as a .env block, export to file, link to another project, schedule rotation across all of them, or delete with a confirmation prompt. Useful when onboarding a new environment or cleaning up stale secrets.
BUILT FOR MACOS
Native SwiftUI with full support for macOS Sonoma and later. Keyboard-navigable, searchable, Dark Mode ready, and sandboxed for App Store security requirements. Your secrets never leave your machine.
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PRIVACY: KeyStack stores all secret values exclusively in the macOS Keychain. No account required. No network requests. No telemetry.
Ratings & Reviews
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Activate secrets right from the menu bar.
KeyStack 1.2.0 adds a menu bar surface for one-click, self-expiring .env file generation:
• Activate any project from the menu bar — writes a real .env.local into its folder
• Files auto-delete after a timeout you control (global default or per-project)
• A live countdown shows exactly when each active export will disappear
• Get a warning notification about a minute before deletion
• Active exports auto-clear the moment your Mac sleeps or locks
• Review a full activation history any time
• Remember a project's environment and export filename so activation is one click
• Launch at Login and Menu Bar Only mode for a lighter-weight, background-friendly setup
• A global keyboard shortcut re-activates your most recent project instantly
• Quitting with something still active now asks first, instead of leaving a file behind silently
Also in this release: export files are now permission-locked and overwrite-protected, the Export Settings window no longer closes unexpectedly while typing, and a batch of smaller reliability fixes across linking, toolbars, and window management.
Thanks for using KeyStack — as always, your secrets never leave your Mac.
The developer, Nerd Snipe Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nerd Snipe Inc
- Size
- 3.8 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 NerdSnipe Inc
