LAB / 01

Useful things, built from curiosity.

Tools, experiments and side projects made to solve real problems.

JOSUE SOMARRIBAS · UX ENGINEER · CRO DEVELOPER

01Featured tool

5 Seconds Tester

Test whether a message is understood in five seconds—before traffic, polish or persuasion hide the problem.

STATUS
Live
TECH
Next.js · TypeScript · Vercel
Open tool
5 Seconds Tester interface

PRIVATE PLATFORM · ADVANCED BUILD

Comparte el Momento

DIGITAL EVENT INVITATIONS

A private invitation platform with a public event layer, personalized guest experiences and a complete operational dashboard.

  • Personalized invitationsUnique links, reserved places, envelope animation and RSVP flows.
  • RSVP & guest operationsConfirmations, released places, messages, exports and activity history.
Next.js 16 · React 19 · TypeScript · Neon · Drizzle
In developmentView public preview
02Utilities

Font Tester

Compare typefaces with real content, fine-tune size and spacing, and test readability.

Open tool
03Utilities

Local Blog Audio Generator

Generate natural-sounding article narration locally, privately and without a per-use fee.

Read how it works
04Experiments

A/B Duration Calculator

Estimate the sample and running time an experiment needs before committing traffic.

View concept
05Experiments

FOUC Simulator

See how content flicker contaminates perception, behavior and experiment validity.

View concept

Have a tool idea or a product problem?

I build practical interfaces and experiments that turn unclear problems into something useful.

Let’s talk