Free is the whole app. Pro is for your second project.

Every feature works on your free project — full history, trends, verdicts and alerts. Pro removes the one-project limit.

Free

One project. Nothing held back on it.

$0 forever
Download now
  • One project, with every feature below
  • Live CPU / RAM / disk / network / GPU charts
  • Gaming overlay with FPS + System Information
  • Floating mini monitor & pop-out terminal
  • Hard CPU & RAM caps (Job Object throttling)
  • Stack auto-detection, Git overview & ambih CLI
  • Full session history & unlimited comparison
  • Baselines, health verdicts & trend charts
  • Spike, drift & regression alerts
  • Session deep-dive & launch-phase analysis
  • Gate CI on performance with ambih verify
Recommended

Pro

Everything in Free, on as many projects as you like.

$8.00 /mo

Billed monthly

$65.00 /yr

$5.42/mo · billed yearly

Get Pro Get Pro
  • Unlimited projects
  • Every feature in Free, on every one of them
  • Switch between projects without losing any history
  • Gate CI on performance: ambih verify fails the build on regression

Enterprise

For teams: volume licensing, invoicing and priority support.

Custom per-seat · billed annually
Contact us
  • Per-seat licensing with volume pricing
  • Invoice or PO billing, not just card
  • Priority support with a direct contact
  • Shared regression context for the team (on the roadmap)
  • 14-day refund, no questions asked, on your first payment.
  • Cancel any time. Pro runs to the end of the period you paid for, then reverts to Free.
  • Nothing is deleted if you downgrade — your extra projects are locked, not removed, and you choose which one stays active.

Read the full refund & cancellation policy

Buy once

Or buy it once

Lifetime

Pay once. This version is yours to keep. No subscription.

$199.00 one-time
Buy lifetime

A future major version is a separate purchase. No renewal, no subscription.

  • Every Pro feature, in this version
  • Yours forever. No renewal, no expiry
  • Works offline, on every machine you own
  • Bug-fix updates for this version included

The math behind Pro

Published statistical methods, named so you can check them.

The same family of tools sysadmins have trusted for decades. No black boxes, no proprietary scoring.

Spike detection

score = MAD × 1.4826   (scaled MAD-z)

Catches sudden departures from steady-state. The 1.4826 scale makes MAD comparable to stddev, the same 3σ convention every analyst already uses.

3σ threshold · rolling 60 samples

Memory drift

Shigh(i) = max(0, Shigh(i-1) + (xi − μ − k))

One-sided CUSUM. Wakes up on slow leaks no single sample ever reveals. Welford warm-up estimates the target + sigma before the alarm arms.

Welford warm-up · 60 samples

Cross-session regression

Theil–Sen line + robust z-score

Fits a robust trend through prior runs (handles natural project growth), scores the latest against the residuals. Sign-aware, Bonferroni-capped: only the worst-deviating metric fires.

≥ 5 sessions required

Baseline

median + scaled MAD   (not mean + stddev)

Per-metric weighted score: RAM 1.5× · CPU 1.0× · Disk 0.7× · Net 0.5×. Improvements never count toward a regression.

outlier-robust by design

Pricing questions

Can I cancel any time?
Yes. Cancel from your Account → Billing page. Your Pro features stay on until the end of the period you already paid for, then quietly revert to Free.
Do you offer refunds?
Yes. 14-day refund, no questions asked, on your first payment. Contact us from the same address you registered with.
What happens to my data if I downgrade?
Nothing is deleted. Free covers one project, so if you had several, the extras are LOCKED rather than removed — you choose which one stays active, and everything you recorded on the others is kept exactly as it was. Re-subscribe and they all come back. Deleting a project yourself is the only thing that removes its data.
Can I buy Pro outright instead of subscribing?
Yes. The Lifetime license is a one-time payment for the current version. You get every Pro feature, kept forever, with no renewal. Bug-fix updates for that version are included; a future major version is a separate purchase.
Do you offer team or enterprise plans?
Yes. For per-seat volume pricing, invoicing and priority support, use the Teams & enterprise option above to get in touch. Per-developer Pro stays the default for individuals.
What payment methods are accepted?
Cards (Visa, Mastercard, American Express and more), PayPal, Apple Pay and Google Pay, plus local methods in some countries. Payments are handled by Paddle, our Merchant of Record — the options you see at checkout depend on your country and device. Integration is being finalised: check back when you see the Subscribe button go live, or sign up now and we’ll email you when payment is wired in.