SERVICE / RAPID DEVELOPMENT

New products, too, take shape at the speed of AI.

The estimate is too high, it takes too long to ship, and once shipped it cannot be changed. With Hora Kit, the AI development framework we build ourselves, we build systems with tests in a fraction of the conventional time and cost.

See how it works

We reply to enquiries and quote requests within 24–72 hours. Even before your requirements are settled, we work alongside you, turning the conversation into a specification.

When this helps

Does any of this sound familiar?

The estimate is an order of magnitude over budgetYou are quoted several million to several tens of millions of yen, and the plan stops before anything is built. There is no way to start small.

It takes so long to ship that the moment passesBy a launch six months out, the market and your own circumstances have moved on. You want to ship early and fix early.

Once it is built, you are afraid to change itWith no tests, nobody knows what a single fix will break. In the end, it gets rebuilt.

What we provide

What we do.

Only what you approve goes into the specification, and we build it one feature at a time
Every feature is handed over with tests, and with end-to-end tests that drive the screens
Input handling, authentication and information leaks are verified automatically before anything goes to production
We take on new products and internal business systems alike

Track record

This speed is already happening on real projects.

All of these are real projects built with Hora Kit. Conventionally they would run to months of work.

2 weeksAn in-house training system builtA major listed company (hundreds of thousands of lines)

200+Prompts organised by taskFive years of development know-how, in one standard workflow that runs on every project

50+Packages we build ourselvesPermissions, RAG, search and more, as modules. The main ones are downloaded tens of thousands of times

How it works

Four steps, each one confirmed before the next.

Only what you approve becomes the specification, and you check it on working screens before it goes to production.

STEP 01ConsultationNo need to have your requirements ready. We sort them out together, in conversation.STEP 02Agreeing the specificationOnly what you approve goes into the specification.STEP 03Development and testingEach feature is built and passes automated tests and security checks.STEP 04Acceptance and releaseYou check it on working screens before it goes to production.

Why it is fast

Speed and quality are not a trade-off.

The speed comes from Hora Kit, the AI development framework we build ourselves and publish as open source.

Five years of know-how, in more than 200 promptsEverything we have learned since founding is organised task by task and fixed as a workflow. Quality no longer depends on who happens to do the work.Tests and E2E tests for every featureEvery feature has test cases, and E2E tests reproduce real screen operations automatically. Each time a feature is added, the existing ones are checked automatically for breakage.Security verified automatically before releaseInput handling, authentication and information leakage are verified automatically, feature by feature. Vulnerabilities are closed before anything reaches production.

The same quality, at an order of magnitude less.

PLANRapid developmentConventional development costseveral million to several tens of millions of yen

With Hora KitFrom several hundred thousand yen, up to JPY 5,000,000

* The amount varies with the timeline, the scope and the number of features. We start by giving you a rough estimate.

Start by seeing that speed and quality for yourself.

Tell us what you want to build and when you need it by, and we will come back with a rough timeline and cost.