Yellow Bench

Reviewed & listed by Learnamic, Aug 2026

Yellow Bench s.r.o. is a small Czech studio that builds free practice tools for elementary-age learners, including Kalkulko, Pravopisko and Zlomko. The apps run in a browser or on iOS, carry no advertising, require no account, and default their optional usage measurement to off.

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Resources from Yellow Bench

$Zlomko home screen showing a fraction circle divided into quarters and a quick-start round of five questions$

Zlomko - Visual Fractions Practice

A free visual fractions and decimals trainer for ages 9-12. Short rounds cover parts of a whole, number lines, equivalence and comparison, with no account, no ads and no timer unless you want one.