PickFu

PickFu is an online platform for lightning-fast consumer polls, made by a US company of the same name. It is used by Amazon sellers, book authors, app developers, and e-shop founders — in short, anyone who needs to decide quickly between several designs and doesn't want to rely on gut feeling alone.

It works simply: you upload two or more variants — product packaging, a logo, a name, a book cover, a product photo, or a landing page — and choose who should respond. You build your audience from demographic filters, for example by age, gender, income, or interests. Then you launch the poll and real, vetted respondents vote; on top of that, each of them writes a few sentences explaining why they picked that particular option.