Four apps live on the App Store

Konstantin
Blokhin

iOS & Go developer·indie game dev

I build apps and games for Apple platforms — and the backend services that keep them running. Swift and SwiftUI on the front, Go on the server, and a growing shelf of small games and apps made in the evenings.

Made and shipped solo

Small, self-contained games and apps for Apple platforms — design, code, art direction and release, all in one pair of hands.

Gravitide app icon: a white starship circling inside a cyan orbit

Gravitide

iOS 18.6+ Action Arcade

Gravity is your weapon. Hold a finger on the screen to pull your ship and drifting debris into orbit, charge a fragment and let it fly at the right moment — collisions do the damage. Fifteen expeditions across five sectors, and the first three are free.

Version 1.1 iPhone · free to start · updated 2026
App Store
AgatVault app icon: a glowing crystal inside a stone vault

AgatVault

iOS 17+ Puzzle Action

Grab the treasure, outsmart the guardian, find your way out. Fifteen intricate vaults of ladders, fragile routes and hidden corners. A pulse clears a path through the brickwork — or destroys the foothold you still needed.

Version 1.0 iPhone & iPad · released 2026
App Store
Crown Drive app icon: a neon-lit sports car drifting on ice

Crown Drive

watchOS Racing Arcade

Endless racing on your wrist — the Digital Crown is the steering wheel. Weave through neon traffic, countersteer across Black Ice or follow your headlights on a Night Run. Built for the thirty seconds you spend waiting in line.

Version 2.0.2 Apple Watch · formerly WatchCarGame
App Store
Intervalia app icon: two notes on a music staff, one of them red

Intervalia

iOS 17+ Music Education

An ear trainer for musicians. Hear two notes on a real grand piano or acoustic guitar and name the interval between them. Seventeen levels, custom practice that brings back the intervals you miss, and every answer shown on the staff, keyboard and fretboard.

Version 1.1 iPhone · free, no ads
App Store

Two decades of shipping software

Mobile on one side, backend on the other. I like projects where both ends are mine — the app people touch and the service it talks to.

20+ years writing software professionally
4 apps on the App Store, built solo
3 Apple platforms in production: iOS, iPadOS, watchOS

Apple platforms

Swift SwiftUI UIKit SpriteKit StoreKit iOS watchOS Xcode

Backend

Go REST APIs PostgreSQL Docker Linux

Game development

Game design 2D graphics Game physics Audio App Store releases

Let's talk

Questions about the games, a bug to report, or work to discuss — all welcome.

kostyabl@gmail.com