Introducing Notch Metrics

Every founder keeps the same tab open somewhere. A Stripe dashboard, a Baremetrics chart, a spreadsheet pulling from three places at once. It gets checked twelve times a day, and every check costs a context switch, a tab, five seconds of loading, and then the slow drift from "what is MRR" into "let me just look at churn by cohort".

The number was never the problem. Getting to it was.

Why put metrics in the MacBook notch?

A MacBook notch is a few hundred pixels of glass that every Mac app pretends is not there. It sits above the menu bar, dead centre, in the exact place your eyes already pass through on the way to anything else. It is too small to hold a dashboard. That is what makes it the right place to hold a number.

Notch Metrics puts your widgets there. Collapsed, it is a thin strip: today's revenue, MRR, active subscribers, whatever you chose. Hover, and it expands to the full set. Move the cursor away and it folds back to the shape it had.

There is no dock icon and nothing in the menu bar. The app has one surface, and that surface exists only while you are looking at it.

Connect once, on the web

Your API keys never touch your Mac. Connecting a service opens your browser through a short-lived link. You paste the key, or approve an OAuth prompt, and the credential goes into our API encrypted with a key unique to that one connection. The Mac app receives numbers.

That split is deliberate. A desktop app holding a live Stripe secret key is a laptop you cannot afford to lose, and people lose laptops.

Revenue comes from Stripe, Polar, Paddle, Dodo Payments, Lemon Squeezy and RevenueCat. Sales come from Shopify. Product analytics come from PostHog, Plausible, Amplitude and Google Analytics. Search comes from Google Search Console, video from YouTube, repository numbers from GitHub. Each provider reports in its own currency, and the conversion happens on the way out, so a notch showing three providers shows one total.

Every source, and every number each one reports.

When a provider does not have your number

Some numbers do not come from a SaaS product. Rows in a Postgres table, a count from an internal admin API, visitors from a self-hosted analytics box.

Those become custom metrics: one JavaScript module on your own machine that returns a number. The code, the keys and the results stay local. The runner has no fetch, only a hardened HTTP helper bound to the hostnames you listed, and secrets live in the macOS Keychain. Write one by hand, or point Claude at our MCP server and describe the number you want.

A custom metric is contained, not sandboxed. It names the hosts it may reach and nothing else is reachable, but it runs as you, like a script you wrote. Read what your agent writes.

Get it

Notch Metrics runs on Apple silicon, macOS 14 and later. Seven days of everything, with no card. Download it, connect one service, and close the tab you have had open since 2023.