The most severe failure in the pool.

• → Signup blocked before the product was ever reached.

Read the Attio breakdown

Signup completes, but the account stays empty.

• → Evaluated by Howard from real walkthrough footage.

See the PostHog report

“Buy now” opens a real checkout on a brand-new trial.

• → Drops into a bare spinner with no product, no price, and no payment form.
• → The same unlabeled spinner recurs at login, in a feature preview, and at the account switcher.
• → It's the only loading state HubSpot has anywhere, and it never once says what's happening.

Read the HubSpot findings

Everything upstream of this is genuinely well-built: a live demo ticket queue behind the signup modal, a clean AI-agent setup wizard with its own test panel.

• → One click on “Sales” in the product-switcher menu, a normal-looking peer of Support, Chat, and Analytics, strips the entire admin shell.
• → Drops you on a page announcing the product is being retired, with no way back but an unlabeled logo.

See where the crack is

The strongest onboarding in the pool.

• → A live, populated workspace in under a minute.

See what Linear got right

The AI cobuilder states its plan and waits for confirmation before building anything.

• → Labeled every step, never a blank or unlabeled wait.
• → Built a working app with realistic sample data on the first try.

See what Airtable got right