Mobile Apps Studio

We build apps
people love.

Viva Apps is an independent studio crafting intelligent, beautifully designed mobile experiences — powered by thoughtful engineering and a relentless focus on the user.

See our work
Our Apps

RepNova

Your AI-powered gym companion. Smarter workouts, real results — every rep counts.

repnova.app
Train smarter with AI coaching that adapts to you.

RepNova combines intelligent workout tracking with AI-driven coaching, nutrition planning, and gamification to keep you progressing. Snap a photo of any gym machine to identify exercises instantly. Track your meals with AI-powered nutritional analysis. Compete on leaderboards and unlock achievements as you grow.

RepNova Nutrition Tracking
RepNova Home Screen
RepNova Session Completed

flexiSIM

eSIM marketplace for travellers. Affordable data plans for 190+ countries — no plastic SIMs, no roaming bills.

flexisim.app
FlexiSIM Popular Countries
ESIM Plan Samples
ESIM Details
Stay connected anywhere you travel.

flexiSIM lets you buy affordable eSIM data plans for 190+ countries in seconds. No hunting for local SIM cards, no surprise roaming charges. Browse plans by destination, purchase instantly, and get connected the moment you land.

Our Approach

Quality over quantity.

We don't chase trends. We focus on building fewer, better apps — each one deeply considered and crafted to genuinely improve daily life.

01

AI-Native

We design with intelligence at the core — not bolted on as an afterthought. Our apps think alongside their users, surfacing insights that feel genuinely useful.

02

User-Obsessed

Every interaction is deliberate. We sweat the details that make everyday use feel effortless — from first launch to the hundredth session.

03

Built to Last

Solid engineering underpins everything. We choose robust architectures and proven tools so our apps stay fast, reliable, and maintainable for years.