01Web Product Development

From Ideas to Real-World Web Products.

From web applications and SaaS platforms to business systems and AI-powered tools, we help turn your ideas into working products — from planning and development to launch.

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  • Web Apps
  • SaaS
  • Business Systems
  • AI Integrations
  • Private AI
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What We Build Our Development Scope

From new web services to internal business systems and AI, we build with the technology and team your product needs.

  • 01

    Web Apps & SaaS

    • MVP development
    • SaaS platforms
    • Membership web apps
    • Admin dashboards
    • Subscription features
    • Custom web services
  • 02

    Business Systems

    • Customer management & CRM
    • Internal operations management
    • Booking & request systems
    • Admin panels
    • Data management & analytics
    • Workflow optimization
  • 03

    AI & API Integrations

    • AI features for web services
    • AI chatbots
    • AI-assisted operations
    • Third-party SaaS & API integrations
    • AI-powered data processing
  • 04

    Websites & Platforms

    • Service websites
    • Membership sites
    • CMS implementation
    • Web platforms
    • Web foundations built for long-term operation

05Private AI & Local LLMs

Your AI. Your Infrastructure. Your Control.

Deploy AI models directly on your own PCs or servers. We help businesses build private AI environments that can operate without sending data to external AI services, depending on hardware capabilities and system configuration.

  • Use the PCs and servers you already own
  • Configurations that keep business data off external AI servers
  • Less dependence on cloud AI APIs
  • No pay-per-use cloud AI API fees
  • Setups designed for work involving confidential information
  • Extend to internal AI chat or build into business systems
  • Model selection and deployment based on CPU, GPU, memory, and use case

*Keeping data off external services requires the appropriate configuration and network controls. Supported models and performance depend on your hardware and use case. Instead of API usage fees, costs include hardware, electricity, and maintenance.

Why OyaTech Why Teams Choose Us

We help you build the right product for your business, from concept to launch.

  1. 01

    From Idea to Launch

    We support you end to end, from early conversations about your idea through requirements, design, development, testing, and launch.

  2. 02

    Built Around Your Goals

    We work through the features and priorities your business needs, then propose a development scope that fits your goals and budget.

  3. 03

    Global Engineering Team

    A Japan-based point of contact backed by a multinational engineering team gives us a flexible way to work with clients in Japan and around the world.

AI, the way you need it.

Beyond cloud AI and third-party API integrations, we can also deploy AI within environments you manage.

Core Technologies

  • TypeScript
  • JavaScript
  • Python
  • PHP
  • Go
  • C#
  • React
  • Next.js
  • Vue
  • Nuxt
  • Node.js
  • NestJS
  • Laravel
  • Django
  • FastAPI
  • Flutter
  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
  • Firebase
  • AWS
  • Google Cloud
  • Azure
  • Docker
  • WordPress
  • Shopify

Selected Works Products We've Built

A few of the web products we've developed. Each case study details our scope and the technologies we used.

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How We Work From First Message to Launch

From your first inquiry to delivery, we move forward step by step based on what we've agreed.

  1. 01. Share Your Goals

    Tell us what you want to build and the problem you want to solve, and share any existing materials.

  2. 02. Scope & Estimate

    We organize the features, approach, cost, and schedule into a clear proposal.

  3. 03. Design, Build & Review

    We build according to the agreed plan and share work in progress for your review as needed.

  4. 04. Launch & Beyond

    After testing, we deliver and launch. We can continue with additional development or ongoing support if needed.

We're happy to work primarily in writing, such as by email, and we add online meetings when the project calls for them.

Pricing Approach How We Price Projects

Custom Quotes

Development costs depend on the size of the product, the features you need, third-party integrations, and your desired timeline.

Based on what you tell us, we outline the scope and cost, and you can review all terms before signing a contract.

Payment Terms

Payment terms vary by project. We set out the amount, payment schedule, and other terms clearly before you sign.

Pricing Examples

These are illustrative examples to give a sense of typical cost and timeline. They are separate from the Selected Works above, and actual cost and timeline are quoted for each project.

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Find Your Service

Already Have a Product in Progress?

Beyond building from scratch, we also help finish products that are mid-development and improve existing systems.

01 Web Product Development I want to build something new You are here
02 Product Rescue & Completion I want to finish what I have

Looking for ongoing development capacity? Ask us about our Managed Dev Team

FAQ Frequently Asked Questions

Can I reach out while my project is still just an idea?

Yes. You don't need a spec or any documents. Tell us what you want to achieve or the problem you want to solve, and we'll help you work out the features you need and how to proceed.

Can you build a small MVP or work with startups?

Yes. We can help you launch with a minimal feature set first and add features step by step based on real usage. We'll suggest an initial scope that fits your budget and goals.

How are the cost and timeline determined?

We quote each project individually based on its size, required features, third-party integrations, and desired timeline. You can review the scope, cost, schedule, and payment terms before signing a contract.

Can you integrate AI features or external APIs?

Yes. We build features powered by generative AI, AI chatbots, and integrations with external SaaS tools and APIs. We'll propose an architecture that fits your goals and expected usage.

Can we run AI in-house without external services like ChatGPT?

Yes. We can deploy locally runnable AI models, such as Qwen-family models, on your own PCs or servers. With the appropriate network configuration, it's possible to set things up so that business data isn't sent to external AI services. What's achievable depends on your use case and hardware, so we review this with you before making a proposal.

Can we use our existing PCs or servers for local AI?

In many cases, yes. We check your CPU, GPU, memory, and intended use, then choose suitable models and a configuration. If performance falls short, we may recommend a hardware upgrade or a different setup. Note that even if external AI API fees go away, hardware, power, and maintenance costs still apply.

Do you work with companies outside Japan, and can we communicate in English?

Yes. With a Japan-based point of contact and a multinational engineering team, we work with clients outside Japan. We communicate in English and are comfortable working primarily in writing, such as by email.

Do you offer additional development or maintenance after delivery?

Yes. We can help with new features, changes, and maintenance after launch. We'll propose the details and arrangements based on your needs.

Let's Build

Let's Bring Your Idea to Life.

You don't need a finished spec. Start by telling us what you want to build or the challenges you're facing right now.

Discuss Your Project

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