App Development
With AI, we take an app from concept to App Store release. We build, ship and run our own apps first — and we offer that same development flow to clients. Below are the apps Webharu actually has live on the App Store.
Our own apps, live on the App Store
Not “we can build it” but “we built it and shipped it.” Three apps we ran end to end ourselves: concept, design, development, review submission and store operation.
Sati — Quiet Meditation and Breath Counting
Breath counting, body scan and loving-kindness meditation. Practices rooted in the Buddhist tradition, in quiet sessions with no voice guide.
View on the App Store →
Sword Map: Japanese Swords and Famous Blades
See where 130 famous swords and national treasures are held right now, on a map of Japan. From the Five Great Swords to the celebrated blades, each with its sources.
View on the App Store →
Booket - Reading Notes
Log your reading time, impressions and insights, then revisit one at random every day. The concept: reading as a daily habit, reading as a conversation.
View on the App Store →For those looking to commission app development with AI.
Traditional app development meant several million yen and several months as a matter of course. Put AI at the heart of development and that assumption changes. Every one of Webharu’s own apps went from concept to App Store release in a matter of weeks.
A flow proven in real operation
We run the whole flow — AI development, review approval, store operation — on three of our own apps. Client projects retrace the same steps, so neither the estimate nor the schedule wobbles.
One team from concept to launch
Requirements, UI design, development, App Store submission and post-launch fixes — you deal with the founder alone. No need to split the job between a dev shop, a design studio and a submission agent.
Build small, ship early
Rather than packing everything in from day one, launch with the core feature, watch the response and grow from there. AI development iterates fast, so it fits this approach perfectly.
What app development costs, and what AI changes.
Here are the going rates you find when you search for app development costs, set next to how AI development approaches them. Estimates are free, andwe present a ballpark right after the first session. We also spell out, on the spot, every recurring cost, monthly or yearly, such as the App Store developer fee.
| App size | Typical market rate (guide) | How AI development sees it |
|---|---|---|
| Simple utility apps (mainly logging, calculation and display) | ¥1,500,000–4,000,000 | Narrow it to the core feature and the cost drops sharply. Webharu’s own apps are this size |
| Mid-size (with sign-up and a database) | ¥4,000,000–10,000,000 | AI generates most of the code, and people concentrate on design and review |
| Large-scale (payments, complex business systems) | ¥10,000,000+ | Depends on the requirements. We propose validating small first, then expanding |
* Market rates are a guide based on published prices from development firms and industry surveys. They vary widely with per-person-month rates and workload. If you want an Android or web app, please talk to us as well.
How it works
Consultation and requirements
We hear what you want to build and why, then narrow down the core feature together.
Estimate (free)
We give a ballpark that spells out the scale, the phases and the recurring monthly costs.
AI development
AI writes the implementation while a person reviews it. We share progress as we go.
Review and release
We handle everything from App Store submission through to release.
We publish the real record of our app builds, too.
We write up the process of planning an app with AI and taking it all the way to App Store release.
![AI App Development Cost [2026]: What ¥1M–5M Buys](/assets/posts/thumb-app-development-cost.avif?v=5da00d76)
Let’s give that idea a shape, in a few weeks.
Consultations are free.
Still at the idea stage? We are glad to be your sounding board.