Hello, I'm
Andrei

Bridging cognition and technology. I build mobile apps, cross-platform tools, and games — things that are useful, playful, and a little unexpected. B.Sc. Cognitive Science, lifelong curious mind.

See My Apps Get in Touch
My Applications

Apps I've shipped

From smart keyboards to Apple Watch games — here's what I've shipped to 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
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
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
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
About Me

What drives me

I studied Cognitive Science — an intersection of CS, AI, psychology, philosophy, and neuroscience. Interests range across:

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

Built across the full stack

From native iOS to cloud infrastructure — a broad toolkit shaped by years of diverse professional projects.

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
Consulting & Expertise

How I can help

Years of diverse projects across startups, industry, and indie dev have shaped a broad skill set. Here's where I add real value.

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.

Let's talk

Have a question, need support for one of my apps, or just want to say hi? I'm happy to hear from you.

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.

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

Legal Notice

This Impressum is provided in accordance with applicable legal requirements.

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.