I build practical AI and mobile apps, and I ship them.

Go Healthy

com.rovtechai.fitnessapp

A fitness app where your streak keeps a pet dog happy.

Meet Bruno: he grows only if you keep your streak. Daily meal plans with calorie targets, a hydration plan split across the day, and XP for logging food and water. My first shipped product: I took it from concept and data model to public release, and I still own its signing, compliance, versioning and updates.

RideOut

Group rides for motorcyclists, with a chat for every ride.

A rider hosts a ride with a meeting point, destination, time and pace, and others join. The route is drawn with distance and time, and every ride gets its own real-time group chat. Hosts moderate their ride, and report, block and in-app account deletion are already built for Play Store rules.

Hively

Buy and sell inside your building.

A private marketplace that only the residents of one building can see. Join with an invite code from the building team, list an item in seconds, message the seller, reserve it and agree a pickup time. The handover is confirmed with a 4-digit PIN: the buyer shows it, the seller enters it, and the item is marked sold. Sellers appear under a nickname, with reports, blocking, building moderators and in-app account deletion built in.

• Building-scoped access control enforced server-side on every endpoint, behind verified Firebase ID tokens and row-level security.
• Guarded transaction flow (reserve, pickup window, PIN handover, sold), so a listing can't get stuck or be sold twice.
• pytest suite covering onboarding, listings, buying, PIN confirmation, moderation, messaging, blocking and account deletion.

SafeSpend

One number: how much you can safely spend today.

A transparent formula (money left, minus bills before payday and a safety buffer, over the days to payday) with a "Why this number" screen that shows the whole calculation. The offline Android app is built and runs on-device. The FastAPI engine, Supabase schema and SQL views are built and verified; the ML layer (XGBoost with SHAP, forecasting, anomaly detection) and a RAG finance coach are designed, and are next to build.

Ride Buddy

A distance bubble over Google Maps for two riders.

For two riders on separate bikes, both navigating with Google Maps. A floating bubble shows how far apart you are and who is ahead, and beeps if you get separated. A name and a 6-character ride code, no sign-up. When GPS error is too large it says "Nearby" instead of showing a falsely precise number.

Kevin's Joy Ride

A Himalayan 450 mountain traffic-riding game.

Ride through two-way mountain traffic past prayer flags and pine forests, with a day to night cycle, near-miss combos, Endless and Time Attack modes, ten riders and a garage with 14 customisable parts. Built in plain Java with a custom game loop and a synthesised engine sound.