Free tools worth fiddling with

What Fiddlepop actually is

Sixty small, single-purpose tools split across four categories: calculators for the everyday math that usually gets done badly in someone's head, generators for quick randomness (names, passwords, dice, raffle draws), quizzes that sort you into a type or score you against a scenario, and browser games built to be playable in the two minutes between doing something else. Every tool lives on its own page, does one job, and shows its answer the moment you finish typing — there's no results page to click through to, no step you have to wait on.

No accounts, because none of this needs one

Nothing here is saved to a server, because nothing here needs to be. A calculator doesn't need to remember your last bill total, and a quiz result isn't worth creating a login for. The one exception is each game's own best score, which is stored in your browser only (not sent anywhere) so it survives a refresh but never follows you to another device — that's a deliberate trade-off, not a missing feature.

Why it's free

The site runs on ad revenue and costs nothing to use. There's no premium tier, no paywalled "advanced" version of a calculator, and no email capture standing between you and a tool — a percentage calculator doesn't need a business model more complicated than that.