Prologue

Hello, I'm
Andrei

This is the story of a curious mind that learned to code — and started shipping. Mobile apps, games, and tools that are useful, playful, and a little unexpected.

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Chapter 01 · 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.

Chapter 02 · The Craft

Tools, collected one problem at a time

Startups, industry floors, long indie nights. Every project left a tool behind — from native iOS to cloud infrastructure.

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

At some point, learning isn’t enough.

You have to ship.

Chapter 03 · The Artifacts

What escaped the lab

Each app began as one of those questions — about play, reflexes, attention, typing. In order of appearance:

Weltraum space game
Multiplayer · Strategy

Weltraum

Download Weltraum on the App Store Tap to learn more
Weltraum space game

Weltraum

Create orbits, hold them, and challenge others across the cosmos. Collect all the stars — best played with 2 players via Bluetooth or Game Center.

Real-time multiplayer via Bluetooth Game Center integration Unique orbit-based mechanics
Download Weltraum on the App Store
Random Drop randomizer app
Arcade · Game

Random Drop

Download Random Drop on the App Store Tap to learn more
Random Drop arcade game

Random Drop

A fast-paced arcade game where balls drop in out of nowhere. Pure reflex, pure fun — pick it up anytime, anywhere, and see how long you last.

Instant pick-up-and-play action Unpredictable ball drops Short rounds, endless replay
Download Random Drop on the App Store
Fishy Watch Apple Watch game
Apple Watch · Game

Fishy Watch

Download Fishy Watch on the App Store Tap to learn more
Fishy Watch Apple Watch game

Fishy Watch

A fishing game built for your wrist. Catch fish, feed them, and play with them — right from your Apple Watch. Many species to discover; the ocean is just a tap away.

Dozens of fish to catch & collect Feed and interact with your catch Designed natively for Apple Watch
Download Fishy Watch on the App Store
MergeKey keyboard app preview
Keyboard · Productivity

MergeKey

Download MergeKey on the App Store Tap to learn more
MergeKey keyboard app preview

MergeKey

The first-ever dynamic keyboard that helps you type cleaner and with fewer errors. Teach MergeKey new words and it learns — making every keystroke smarter over time.

Dynamic, adaptive word learning Reduces typos in real time Fully customizable personal dictionary
Download MergeKey on the App Store

Shipping my own apps taught me the whole journey.

Now I walk it with others.

Chapter 04 · Your Story

What I can build with you

Years across startups, industry, and indie development — here's where I add real value to your story.

01

Mobile App Development

Native iOS in Swift/SwiftUI or cross-platform with React Native and Flutter. From initial concept through App Store submission — including WatchKit, CoreBluetooth, and hardware integrations.

02

AI Integration

Embedding AI into your product — on-device with CoreML/Vision, in the cloud with LLM APIs, or custom computer vision models. Proven experience fine-tuning and deploying real-time ML pipelines.

03

Web & Frontend

Modern, responsive web apps with Angular, TypeScript, and Node.js. Clean UI/UX grounded in Figma, with a keen eye on performance and accessibility.

04

Cloud & DevOps

Containerised, scalable infrastructure on GCP or Azure. Kubernetes orchestration, Docker pipelines, and GitLab CI/CD — building systems that are reliable and easy to maintain.

05

Hardware & Connectivity

NFC and Bluetooth LE integrations, IoT sensor systems, and industrial hardware interfaces. Experience connecting the physical world to apps — from medical devices to factory floors.

06

Tech Consulting

Interdisciplinary background in Cognitive Science, AI, and engineering — great for architecture reviews, stack decisions, MVP scoping, code quality, and turning complex ideas into working prototypes fast.

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.

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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.

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

LEGAL
Impressum

Contact Information

Name: Andrei Achziger
Address: Gleiwitzer Straße 6, 49163 Bohmte, Germany
Email: andrei.zerodeathgames@gmail.com

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The content on this website and associated applications are provided for general information purposes. Andrei Achziger makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.