The verdict
If you want a calculator, a pricing estimator or a readiness assessment as a lead magnet, pick Outgrow. A good one beats another ebook for long B2B buying decisions, and the answers qualify the lead before sales call.
If you want a better demo request form, an application or a feedback survey, pick Typeform. It does that job well and the free plan lets you test it.
Most small B2B teams need ordinary forms before they need calculators, and Typeform also has the more open developer side. Even so, the right choice depends on the offer, so I leave the winner open.