Catch memory leaks before they crash your Mac.
LeakBar watches memory growth on your Mac, ranks suspicious processes, and tells you why in plain terms. Try it free for 14 days. Signed SwiftUI menu bar app. Local-only. No cloud. No telemetry.
- 14-day free trial — no payment required
- Current release: 0.4.1
- Signed app with in-app updates
- Local-first monitoring and exports
Release
LeakBar ships as a signed menu bar app. Install from the DMG once, move it into Applications, and let the installed app handle normal updates.
Licensing
Stripe Checkout tags the license tier in metadata, delivers the key to the purchaser email, and the app can submit that key directly from its own settings.
Evidence
Passive suspicion first, then explicit restart, recovery, export, and support-bundle flows when you need stronger evidence or safer remediation.
Primary release pricing
Download LeakBar and use it free for 14 days — no payment, no signup. When the trial ends, buy a perpetual license to keep it running.
Personal License
For solo developers and primary workstation use.
- 14-day local trial before purchase
- 1 seat
- 1 year of updates
- License fulfilled to purchaser email
Team License (3 seats)
For small teams that need three seats under one purchase.
- 14-day local trial before purchase
- 3 seats
- 1 year of updates
- License fulfilled to purchaser email
Recover a license or get purchase help
LeakBar issues one license per completed Checkout session and keeps a private recovery record. Use the original purchaser email to re-send the same license.
License recovery
Enter the email used at Checkout. If a license record exists, the worker re-sends it through the configured delivery provider.
Support zone
The release support surface stays narrow on purpose: purchase recovery, seat clarification, download integrity, and primary release access. No account system required.
- Stripe webhook issues the license
- Private R2 record stores the license and purchaser-email index
- Configured delivery provider can re-send the same key
- Download page publishes the current DMG, stable redirect, and SHA-256
Designed around triage clarity, not dashboard noise.
Guardian mode
Always-on monitoring in the menu bar. LeakBar scores every app group from 0 to 100 and separates real leak behavior from startup spikes, caches, and normal memory churn.
Developer probe
Wrap a command with leakbar wrap -- cargo run and LeakBar can capture leaks and vmmap artifacts when the score crosses the line.
Shipped app flow
LeakBar now ships as a packaged SwiftUI menu bar shell with built-in update support after install. Download the DMG once, then stay in the installed app.
Readable scoring
The score is not a black box. Growth slopes, monotonicity, idle retention, release ratio, and baseline anomalies are surfaced as direct reasons.
Recovery and restart feedback
LeakBar does not just surface suspects. It can guide explicit recover or restart actions and report when those actions actually completed instead of pretending the process moved on its own.
Honest about what it knows
Passive observation is useful, but it is still weaker evidence than probe-mode capture. LeakBar is explicit about that boundary.
What passive mode can tell you
- Leak suspicion
- Probable leak
- Critical runaway
- Cache bloat
- Idle retention
- Restart candidate
What requires probe mode
- Confirmed leak with stack traces
- Allocation site identification
- Malloc history
- Wrapped-session evidence
Simple flow, fast read
Install
Download the signed DMG, move LeakBar.app into Applications, and launch it like a normal Mac app. The app starts with a 14-day local trial.
Watch
LeakBar samples same-user processes, builds baselines, and ranks growth patterns quietly in the background.
Act
When something looks wrong, the menu shows the score, the reasons, and the next safe action: inspect, probe, recover, restart, ignore, or export.
Your data stays on your Mac
LeakBar does not need an account, analytics, or cloud storage. Process data stays in ~/Library/Application Support/LeakBar/ and can be inspected locally.
This website also avoids tracking, cookies, and analytics.
Ready to catch the leak before it crashes your Mac?
Download LeakBar 0.4.1 and try it free for 14 days. No payment, no signup. Buy a perpetual license when you're ready to keep it.