HoldFast next to the tools you might pick instead, with a source for every claim about them.
PickFu is a poll: people see both options, vote, and say why. HoldFast is a monadic test: each person sees one cut, and only the people who finished it count. Different questions, different prices.
Six services, six different questions. What each one is, who it is for, how you buy it, and a plain note on which ones publish a price.
Loops shows a respondent a whole campaign in a sequence you control, on a panel of 110 million people, priced for agencies and brands. HoldFast shows each person one version of one piece and counts only the people who finished. Different designs for different questions.
Swayable is campaign-scale measurement with a sales conversation at the door. HoldFast is the same randomised shape, sized for a team deciding between two cuts, with the price on screen.
Review answers what the client thinks. A test answers what strangers who match the audience do. Frame.io is built for the first and does not try to be the second; HoldFast puts both on one upload.
System1 predicts market effect against a very large norm base. HoldFast tells you which of your two versions did better on the question you chose. Knowing which question you are asking decides the tool.
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