What was happening
Strong is the official sports-nutrition store of Synergym, one of Spain's largest gym chains. It was built from zero on Gufi — storefront, member login, payments, shipping, marketing and stock — as one platform instead of six disconnected SaaS tools, and connected directly to Synergym's 60,000+ member base.
Members sign in with a magic link, are recognised automatically and get their 5% member discount at checkout. Stripe and Redsys move orders to paid and into fulfilment on their own, SEUR labels are generated and delivery tracking is checked automatically.

Where customers come from
- Synergym members99.7 %
- web sign-ups0.3 %
What changed
Synergym's members got a real store — built end-to-end on Gufi, from the login to the checkout to the box on the doorstep.
Strong
Live counts from the Strong Gufi instance, June 2026. These are real cumulative volume; “six tools into one” describes the architecture Strong runs today, not a measured before/after delta.

