Stories

What building and operating these products taught us.

Narratives that span more than one product — the things no single product blog could publish without wandering off its own subject. Category expertise lives on the product sites; this is the connective material.

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Why we are building Crossdeck Sales

Cold outbound is miserable because the seller is blind. We were not — we already saw who landed, what they read, and why. So we are building the tool that turns that journey into outreach that lands.

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Why we built Crossdeck — and why every product we build helps test it

We thought the App Store Connect wait was the problem. The real problem was fragmentation — the same person scattered across a dozen disconnected tools. So we put one SDK and one customer timeline underneath everything we operate.

Every product is a test environment for the one beneath it

A habit tracker on the App Store, a link-in-bio product carrying anonymous global traffic, and a book catalogue on two platforms. None of them was built to test anything. That is exactly why they work as tests.

The Firebase bill that taught us to see

A runaway Firestore read bill sent us chasing ClickHouse. The real fix was not a new database — it was being able to see where every read came from. What we learned, and why we open-sourced Buckets.

The email address you’re keying on is not the person

Why email is a fragile anchor for user identity, how keying on the wrong id forks one person into many records, and how an identity graph converges every key onto one canonical customer.

We got our connector rejected. It was the best product spec we received all year.

A marketplace review rejected our connector with roughly a dozen findings. Instead of a failure, it read like a spec — the exact definition of a production-grade third-party integration we would never have written ourselves.

The black box blinks: seeing App Review happen in your own data

App Review is a black box. Identity-joined session data reveals when a reviewer starts testing your build, where they connect from, and the exact path they walk — plus the line we will not cross.

Why Biotree needed Crossdeck Trust — and how we stopped the SEO spam farms

Public, indexed link-in-bio pages are a magnet for spam farms and bot signups. The attack Biotree faced, why the obvious defences backfire, and the signup firewall that stopped it without punishing real users.