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Mobile App Development
iOS and Android apps with Flutter: organizers, utilities, apps for professionals, push notifications, subscriptions, AdMob and store publishing.
FlutterFirebaseGoogle Play / App Store
Custom digital development
Apps, web apps, websites and AI automationApp, Web & AI
Apps, web apps, websites and AI automationApp, Web & AI
for your business
I build modern digital solutions for businesses, professionals and small projects: mobile apps, web apps, landing pages, bots, API integrations and AI-powered tools.
12+ productsiOS · Android · Web
50+ languagesgame localizations
14 localizationstarot apps and utilities
AI & APIOpenAI, ChatGPT, Claude, MCP
What I can build
A practical technical stack for creating useful, fast and real-world-ready digital products.
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Web App Development
Custom web apps for internal or public use: dashboards, admin panels, tools for clients, documents, appointments and data.
DashboardAdmin panelDatabase
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Websites & Landing Pages
Modern, fast and responsive websites for businesses, professionals, services and digital products. Clear design and conversion-focused structure.
Landing pageBusiness websitesBasic SEO
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AI, ChatGPT & Claude Integrations
AI assistants, ChatGPT plugins, Claude connectors, MCP integrations and API automation for websites, apps, messaging platforms and internal tools.
OpenAI APIChatGPT pluginsClaude connectorsMCPOAuthAutomations
Why this is real delivery experience
Not just a landing page: the portfolio includes published products, real web apps, localization work and AI/API integrations.
Digital products
Portfolio across iOS, Android and Web, counting published platforms and web apps as separate products.
Game localizations
Experience with multilingual projects and releases prepared for international markets.
Languages for apps and utilities
Localization experience for tarot apps, utility apps and mobile products with adapted interfaces and content.
Google Play & App Store
Practical experience with publishing, testing, policy review and platform-specific restrictions.
Real automation work
Integrations with OpenAI API, bots, external platforms and internal tools.
2 ChatGPT plugins + Claude connector
Astera Tarot & Astrology and Astera Oracle & Numerology are published in ChatGPT through MCP integrations. Astera Oracle is also published as an approved Claude community connector.
Projects and proof of work
A selection of published products and real tools. The full portfolio exceeds 12 digital products when iOS, Android and Web are counted separately.
Astera Bond
Relationship-focused AI product with message analysis, saved relationship context and cross-platform account infrastructure.
LoopShift
Logic puzzle game built around moving balls through connected loop tracks, published on Google Play.
Astera Oracle & Numerology — ChatGPT & Claude
A published ChatGPT plugin and Claude connector built on the same Astera backend/account system. The ChatGPT integration completed OpenAI review, while the Claude connector was approved as a community connector and published in the Claude Directory.
Medical Documents Organizer
Organizer for medical visits, medicines, documents, receipts and reminders.
Pet Care Organizer
Utility for organizing pet-related information, documents and reminders.
Astera Tarot & Horoscope
Multi-platform Tarot and astrology product available on Android, Web and through a published ChatGPT plugin powered by MCP, using the existing Astera backend and account infrastructure.
App portfolio
Portfolio with published Google Play and App Store apps, web products, localizations and multi-platform releases.
Internal tools
Internal tools for workflows, content management, automations, APIs and operational processes.
Private project
AI Bots & API Integrations
AI assistants, chatbots and API integrations for websites, apps, Telegram, WhatsApp, Instagram and internal tools.
OpenAI API · Bot · API
AI, assistants and automation
Not just a chatbot: I build AI and API integrations for real product workflows, including OpenAI API, Claude connectors, LLM integrations, MCP (Model Context Protocol), OAuth and automation.
OpenAI APILLM integrationsMCPChatGPT pluginsClaude connectorsOAuthAPI automation
- AI assistants for websites and apps
- Chatbots for requests, leads and customer support
- Telegram / WhatsApp / Instagram bots via official APIs or compatible solutions
- OpenAI API integration in apps, websites and internal tools
- Automations for content, documents, notifications and workflows
- Connections between apps, databases, CRMs and external platforms
- ChatGPT plugin and Claude connector development: MCP tools, OAuth/DCR, account connection, review preparation and production rollout
- Published proof of work: Astera Oracle & Numerology is live in ChatGPT and listed in the Claude Directory
Indicative pricing
Each project is estimated after a short functional analysis. These ranges help define the expected scale.
Landing pageModern page for a service, product or professional
from €500
Professional websiteResponsive website for a business or small company
from €900
Simple web appDashboard, client area or basic internal tool
from €1,500
Simple mobile appFlutter app for iOS/Android with essential features
from €1,500
AI bot / OpenAI integrationAI assistant, bot or API automation
from €1,200
Complete MVPApp or web app with backend, database, login and integrations
from €3,500
Monthly supportUpdates, stores, small changes and maintenance
from €100/month
API integrationsConnection between platforms, databases and external services
from €500
The final price depends on features, design, integrations, backend, required platforms and development timeline.
How I work
A simple and clear process, suitable even for clients without technical experience.
Brief and goals
I clarify what the product should do, who it is for and which problem it should solve.
Structure and estimate
I define features, timeline, platforms, priorities and a realistic project estimate.
Development and testing
I build the product, test behavior across devices and prepare required integrations.
Launch and support
I help with online launch, Google Play, App Store, updates and future improvements.
Have an idea for an app, website or AI automation?
Send me a short description. We can understand together whether you need a website, a web app, a mobile app or a first MVP.