About Sizekin

Who makes it

This independent web edition is a project inspired by Size It Up. Its daily archive began on 25 October 2026. We maintain the playable catalogue and record each silhouette’s declared source and measurement. The game is free and needs no account.

Where the sizes come from

The reviewed library currently contains 1,221 active objects.

Sources and licences: credits page lists the recorded author, licence and measurement source for each entry. Some declarations come from the reference catalogue and have not been independently checked. We do not claim that every silhouette was drawn by us. Think a number is wrong? Tell us which object and measurement to review.

How the game works

Every category has a Daily: the same five pairs for everyone, new each midnight, scored out of 1,000. Unlimited deals fresh pairs with no daily cap, Past Games replays earlier days, and a challenge link sends your exact rounds to a friend. The full rules are on the how-to-play page.

Sizekin on your device

You can install this web edition from a supported browser on a phone, tablet or computer. It uses the same site and requires an internet connection. We do not currently provide an iPhone or Android store app. See installation options.

Ads and your data

The game is free to play. This edition currently has no advertising. Cloudflare measures page performance. Game sessions, daily standings, challenges, votes and feedback use our server. What we store and how sharing works is explained in the privacy policy. The terms of use cover the rest.

Contact

Send corrections, copyright concerns and ideas for new categories through the feedback form. Messages are saved privately for this project’s team. Include a contact address in your message if you need a reply.