Build Production Apps with DB, Authentication, and Payments by Just Talking to AI. Japan's First AI App Builder "Euthopia" Officially Released

What is Euthopia?

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Eureka Labo Co., Ltd. (Representative Director CEO: Yujiro Higawa) will officially release "Euthopia," a platform that generates and publishes full-stack web applications through conversations with AI, on April 1, 2026.

In recent years, overseas AI app builders such as Lovable, Bolt, Replit, and v0 have rapidly evolved, with some tools now supporting databases, authentication, payments, and even hosting. However, **there is currently no AI app builder originating from Japan.** Euthopia was born to fill this void, offering an option optimized for Japanese and naturally usable by Japanese users and developers.

Euthopia provides **all built-in** features: database, user authentication, Stripe payments, and production hosting. By simply describing the desired app in Japanese, a **production product** is completed in minutes. It can then be published, users can sign up, and payments can be received.

Euthopia particularly focuses on **AI output accuracy**. This means not just a beautiful appearance, but also ensuring that the generated code runs without errors. We have thoroughly refined our prompt design and code extraction logic to achieve the experience of "generate and it just works."

It's free to start, no credit card registration is required. 5 credits are granted daily, allowing access to all features.

Key Features

Everything you need for your product is included from the start.

・ Database — Table definitions and CRUD APIs are automatically generated. Manual schema design is unnecessary. If a user says, "Add a product management feature," a product table and its API are automatically built.

・ User Authentication — Email/password authentication can be integrated with one click. User registration, login, and session management are automatically built, eliminating the need to write a single line of authentication code.

・ Stripe Payments — Supports both checkout (one-time payments) and subscriptions (recurring payments). Products capable of monetization can be created without complex Stripe API integration.

・ Production Hosting — A live URL is immediately issued for the generated app. No server setup, domain configuration, or deployment settings are required. Just press the "Publish" button to get a globally accessible URL.

・ Iterative Improvement through Conversation — Simply tell the AI to "add dark mode," "add product review feature," or "simplify the payment flow," and the app is instantly updated. There's no need to aim for perfection from the start; it's a new development experience where you refine through dialogue.

Supported frameworks include HTML + Tailwind CSS (for LPs, portfolios, blogs), React / Vite (for dashboards, SPAs), and Next.js (for full-stack, SSR support). The AI automatically selects the optimal framework based on the app's requirements.

Multiple Services Already in Production

Euthopia has been providing services to actual users since its beta period before the official release. Below are some of the services built and deployed in the Euthopia environment that are currently in production:

・ ZukanSwipe: World Heritage — An educational app where users can enjoy learning about all 1,248 (as of January 2026) UNESCO World Heritage sites through swipe operations and maps. It is available on Google Play and can be downloaded and used.

・ CURATEO — A matching platform connecting people who need contemporary art with artists who want to showcase their work. It implements a series of flows from profile creation to artwork search and business negotiation requests (https://lp.curateo.net/).

・ every-counts.com — A web service built with Euthopia and currently in production (https://every-counts.com).

These are not demos or mockups but actual production services used by real users. This proves that Euthopia is an established platform, not just a "concept product."

Anticipated Use Cases

・ Entrepreneurs / Startups — Instantly create an MVP for an idea and test market reactions. Demo products for investors can also be prepared in minutes. It's the fastest way to "build and show first."

・ E-commerce Businesses — Build a store with product management, cart, and Stripe payments on the same day. Ideal for situations requiring speed, such as seasonal products or pop-up stores.

・ SaaS Development — Generate team authentication, subscription billing, and an admin dashboard all at once. In the MVP validation phase, you can quickly test if users will actually pay.

・ Corporate DX — Build admin screens and business tools without engineers. IT departments and back-office staff can create tools optimized for their own operations.

・ Creators — Publish portfolio sites or fan communities in minutes. Design changes can be made simply by conversing with the AI.

・ Education / Training — As teaching material for non-engineers to experience the entire app development process (planning → implementation → DB → deployment). It can be used in practical curricula where students learn by building working products.

Development Background — "Why hasn't it come from Japan?"

Bolt, v0, Lovable, Replit — AI development tools that dominate social media daily. After 2025, these tools are rapidly evolving, becoming full-stack with support for databases, authentication, and hosting. However, **all of them originate from overseas.**

Yujiro Higawa, CEO of Eureka Labo, has long held two thoughts regarding this situation.

The first is, **"Why hasn't it come from Japan?"** Japanese engineers' technical skills are world-class. Yet, there are no Japanese players in the rapidly growing AI development tool market. Overseas tools are designed for English-speaking regions, and Japanese users may not be getting the optimal experience in terms of Japanese instruction accuracy, UI, and support. There was a strong desire to release a product from Japan, optimized for Japanese.

The second is, **"It should be possible to create with higher accuracy and greater ease."** While overseas AI builders are rapidly becoming more functional, there was dissatisfaction with the "final accuracy" — whether the generated code runs without errors. It might look good but produce errors when executed. Dependencies might be broken. File structures might be inconsistent. We wanted to achieve the obvious: that AI-written code "just works."

Driven by these two thoughts, Higawa built an MVP **alone in one week**, working on weekends and evenings alongside his main job.

The biggest challenges were two technical issues. The first was **AI output accuracy** — prompt design and code extraction logic to make AI-generated code not just "look good" but "run without errors." The second was **complete infrastructure automation** — a mechanism to allow users to complete database construction, authentication implementation, Stripe integration, and production deployment, processes that usually take weeks, with a single click without any conscious effort.

A week later, the MVP was running. Entering an app description into the chat generated a web app with a database in minutes, and pressing the publish button issued a live URL. "This can work" — that was the moment of conviction.

Programming Novice Team Members Published Multiple Services in Production in One Month

After completing the MVP, Higawa intentionally brought two programming novices onto the team.

Over one month, these two were taught the basics of development, how to use AI, database concepts, server mechanisms, and production deployment procedures. They then developed apps within the Euthopia environment.

As a result, within the same month, the two developed 10 apps and deployed multiple services to the production environment. The educational app "ZukanSwipe: World Heritage," available on Google Play, and the art matching platform "CURATEO" mentioned earlier, were developed by these two programming novices using Euthopia.

Currently, these two are responsible for sales and marketing, while also creating app prototypes themselves, rapidly shaping and testing ideas. In an environment with Euthopia, such a development system is realized where engineer resources are not a bottleneck, and all team members can participate in product development.

Future Outlook — Beyond Vibe Coding

Euthopia's current features are just the beginning.

"Creating apps by talking to AI" — so-called vibe coding — has significantly changed the way development is done. However, code generation alone has its limits. Eureka Labo is currently building a **next-generation app development system** that comprehensively supports the entire product lifecycle — planning, design, implementation, testing, deployment, and operation — not just AI writing code. This is scheduled for release in the near future.

An environment where engineers and non-engineers can collaborate seamlessly, and everyone with an idea can bring products to the world without technical barriers. That is the vision behind the name "Euthopia" — a utopia.

Company Profile

・ Company Name: Eureka Labo Co., Ltd.

・ Representative: Yujiro Higawa, Representative Director CEO

・ Service Name: Euthopia

・ URL: https://euthopia.io

・ Release Date: April 1, 2026

・ Pricing: Free (5 credits granted daily) / Paid plans available

・ Supported Languages: Japanese, English, Korean

・ Team: 3 members (collaborative team of engineers + non-engineers)

Contact for this matter

Eureka Labo Co., Ltd.

Representative Director CEO Yujiro Higawa

Email: info@euthopia.io

URL: https://euthopia.io