Shipping · 2026
HealthMate
AI health companion for iOS. Daily briefings, food photo analysis, workout coaching, medical document interpretation. Built on top of Apple HealthKit; your data stays on your device.
Visit siteA product studio
building Web 4.0 apps.
We build AI-companion mobile apps for personal-life verticals — health, mental health, fitness, productivity. Each product replaces an expensive human service with a thoughtful AI companion that knows the user better than any of them could.
Products
In development · 2026 H2
CareerMate
AI interview & career coach for iOS. Realistic mock interviews with voice, instant feedback on your answers, and a private history of every practice session. Built to replace expensive interview coaching.
Details comingA focused studio.
Built for the long view.
w4app is a Helsinki-based product studio. Our team works across engineering, design, and product to bring AI-companion apps for personal-life verticals to release-quality. We move at the pace good software demands — and we stand behind every product we put our name on.
See what we're building