Mondaysys

Mondaysys helps growth teams and agencies turn CRO hypotheses into clear designs, working A/B tests, and Shopify improvements.

We design and develop product pages, landing pages, carts, and checkout flows, then check the implementation across screen sizes and browsers. Our work includes experiment variation coding, event-tracking validation, and QA before launch.

We also provide UX and CRO audits, Shopify design and development, and ongoing frontend support. Teams can work with us as an embedded or white-label execution partner.

Follow for practical UX comparisons, the reasoning behind each design choice, and ideas to test. Brand redesigns shown here are unofficial concepts; proposed winners are design hypotheses, not reported experiment results.