T−00 · Prologue

Hello, I'm
Andrei

I make apps and games for iPhone, Apple Watch and Android. Six of my own are in the stores, and I build for clients too.

See the apps Get in touch

Scroll to begin

T+01 · The Artifacts

What escaped the lab

The apps I have in the stores right now. Hover a device, or press play, to watch one run.

ARCADE · PLATFORMER

Up Dino Up

FEATURED · 2026-08 · IPHONE · ANDROID

A little dino climbs an endless tower. Hold a side to run, swipe to jump, kick off the walls: two gestures do everything. Every climb is generated fresh, from dark caves up into the open sky.

Hold-and-swipe controls Wall-jumps, double jumps and crumbling blocks Four dinos · kid-friendly

Read the case study →

ARCADE · MULTIPLAYER

Weltraum

2018-07 · IPHONE · FORMERLY KPY

A small space arcade about timing and orbits. Swipe to launch your moons, then catch them again. Space is round, so what leaves one edge comes back from the other.

Case study →

REFLEX · MULTIPLAYER

Random Drop

2020-05 · IPHONE

A one-thumb reflex game. Tap left or right to drop each ball into the bin of its colour, and try to keep up as it gets faster.

Case study →

APPLE WATCH · GAME

Fishy Watch

2023-06 · APPLE WATCH

A fishing game for Apple Watch. Cast with your arm, dive with the Digital Crown, and raise what you catch in your own aquarium.

Case study →

KEYBOARD · PRODUCTIVITY

MergeKey

2024-08 · IPHONE · ANDROID

A keyboard that hides the letters you can't need next. As you type, impossible letters disappear and the rest grow, so each tap has a bigger target.

Case study →

APPLE WATCH · GAME

Skaty Watch

2026-09 · APPLE WATCH

Flip tricks on your wrist. Pull down to crouch, flick to pop and spin the board, tap to catch it, and land flat for a Perfect.

Case study →

Working on an app? I also take on client projects, from first prototype to store release. Get in touch →

T+02 · The Question

It began with a question

"How does a mind work?" I chased that question into Cognitive Science — computer science, AI, psychology, philosophy, neuroscience. I came back with fewer answers and much better obsessions:

Philosophy Neuroscience Psychology Data Visualization Chess Skateboarding AI Running Guitar Animals Languages Graph Theory Mathematics Space Video Games

Questions are cheap.

Building answers is the fun part.

T+03 · The Craft

Tools, collected one problem at a time

Startups, industry floors, long indie nights. Every project left a tool behind.

iOS & Apple Platforms

SwiftSwiftUI UIKitWatchKit CoreMLARKit CoreBluetoothSpriteKit CoreMotionAVFoundation StoreKitObjective-C

Mobile & Cross-Platform

React NativeFlutter .NET MAUIXamarin IonicCordova DartC#

Web & Backend

TypeScriptJavaScript AngularNode.js HTML / CSSREST APIs Firebase

Cloud & DevOps

KubernetesDocker GCPMicrosoft Azure GitLab CIGitHub Git

Connectivity & Hardware

NFCBluetooth LE Multipeer ConnectivityIoT TinkerforgeGame Center

AI & Machine Learning

CoreMLVision Framework LLM APIsPrompt Engineering Computer VisionPython Firebase ML

Game Dev & 3D

UnityBlender C#SpriteKit ARKitSceneKit Aseprite

Design & Tools

FigmaAdobe Ps / Ai / Ae SketchAutoCAD

Shipping my own apps taught me the whole journey.

Now I walk it with others.

T+04 · Your Story

What I can build with you

Work I've done for startups and industry teams, and would happily do again.

01

Mobile App Development

Native iOS in Swift and SwiftUI, or cross-platform with React Native and Flutter. From first idea to App Store release, Apple Watch and Bluetooth hardware included.

02

AI Integration

AI inside your product: on-device with CoreML and Vision, in the cloud with LLM APIs, or a custom computer vision model. I've fine-tuned models and run real-time ML pipelines in production.

03

Web & Frontend

Responsive web apps with Angular, TypeScript and Node.js. Designed in Figma first, built with performance and accessibility in mind.

04

Cloud & DevOps

Containerised infrastructure on GCP or Azure, with Kubernetes, Docker and GitLab CI/CD. The goal is a system that's easy to keep running.

05

Hardware & Connectivity

NFC and Bluetooth LE, IoT sensors and industrial hardware interfaces. I've connected apps to medical devices and to machines on factory floors.

06

Tech Consulting

Architecture reviews, stack decisions, MVP scoping and code quality. Also happy to help turn a rough idea into a working prototype.

T+05 · Epilogue

Every ending is a beginning

Have an idea for the next chapter — or just want to say hi? I'm happy to hear from you.

andrei.zerodeathgames@gmail.com

Privacy Policy

Apps provided by Andrei Achziger are intended for use as is. This page informs visitors about my policies regarding the collection, use, and disclosure of personal information. If you choose to use my services, your personal information will not be stored, distributed, or analyzed by me.

Andrei Achziger does not take responsibility for data processed by third-party platforms such as Google, as I have no access to or insight into their data collection and processing practices. Any data collection via those platforms is primarily used to serve relevant ads.

My apps are suitable for children. Since my apps collect no personal information at all, no data from children or any other users is collected, stored, or shared. Game progress and settings (such as high scores) are saved only locally on your device and are removed when the app is uninstalled.

Health data: Fishy Watch can read your heart rate to power in-game features such as the fish tank experience. All heart rate measurements are processed exclusively on your device and never leave it — they are not stored permanently, transmitted, or shared with me or any third party.

MergeKey has its own, more detailed policy: MergeKey privacy policy.

This policy may be updated when necessary — please check this page periodically for changes. Updates take effect immediately upon posting. — Andrei Achziger