Barry's Bold brand, class schedule and signup up front. Visit ↗
BYOB New inbox in every project
Fitness Website Builder in Tokyo
Fill classes in Tokyo with a site that shows the schedule, trainers, and a frictionless signup.
Runs on the stack you trust
Prompt to product
From one-line brief to finished app.
Compare the one-line brief with what BYOB ships. Real layout, data, and deploy status, editable from the same workspace.
TD
Team Tasks
Shared task tracking
Today4
Done11
Streak6d
Open live app ↗
Drag the handle. Or focus it and use the arrow keys.
Get inspired
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Local details
What to know before you build here
- Currency
- Japanese Yen (JPY ¥)
- Tax
- Consumption tax at 10%
- Payments
- Cards, PayPay
- Domain
- .jp
Japanese-first; detail and trust are decisive.
Fresh from the community
See what builders ship, or start from an example.
Live workspace
Code, chat, and preview in one place.
The workspace is built for repeated product work, not disposable demos. Every generated file stays inspectable, every change is visible, and every follow-up can target the exact part of the app you care about.
01 · EDITOR
Generated code, ready to edit.
Every file BYOB writes stays visible and editable. Follow-ups target the exact lines you care about instead of regenerating from scratch.
- Added lines highlighted the moment they land
Code
Act mode TodoPage.svelte
schema.ts
1
<script lang='ts'>2
type Task = { id: string; title: string; done: boolean
}3
let tasks = $state<Task[]>([])4
5
function toggleTask(id: string) {6
task.done = !task.done // just added by BYOB7
}8
</script> main · 0 problems Preview ready
02 · AI COMMAND
Plan, build, and refine in one chat.
Describe the outcome once. BYOB turns it into a build plan, implements it step by step, and keeps every change visible while you iterate.
- Build plan with live progress you can inspect
B BYOB AI
Chat Act
Your prompt
“Build a todo app for beginners”
Build plan
80%- Task list UI + empty state
- Add + toggle actions
- Progress summary…
Add due dates and filter by done…
03 · LIVE PREVIEW
See every change the second it lands.
The preview updates as BYOB works, with deploy status attached, so the path from edit to production stays inspectable.
- Real app state, not a static mockup
Live preview
/TD
Team Tasks
Shared task tracking
Progress 2 of 3 done
- Wireframe landing page
- Task list component
- Responsive polish + QA
Ask BYOB to refine
Deployed · SvelteKit · SSL on
Prompt to app
From first prompt to a workspace you can ship.
Start conversationally, approve the shape, let Tool Mode implement, then refine and deploy from the same workspace.
- 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
- 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
- 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
- 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
- 05 Deploy Ship the finished app, connect domains, and keep iterating from the same workspace.
Agent and backend
Code with your agent, ship with a real backend.
Connect Codex, Claude Code, or Antigravity to your project, then store data and ship to production without leaving the workspace.
- Approve project access from BYOB
- Installs the byob command
- Preview, deploy, git diff, DNS, credits, and code tools
npmnpx -y byob-cli codex installApprove only the projects your agent can touch, then read context, edit files, inspect diffs, test previews, and roll back from your terminal.
- 1
- prompt to start
- 3
- live panes
- 24/7
- edge preview
Loved by builders
Rated 4.9/5 by developers and founders using BYOB to move from idea to shipped product.
Built for shipping
The parts that usually slow you down are already here.
BYOB handles product planning, implementation, preview, testing, database work, and deployment from one focused interface, with coding-agent access and production analytics when you want to keep working from your own terminal.
This part is hands-on. The cards drift until you touch them. Drag to rearrange, or press and hold one to feel it push back.
Agent integrations
Give Codex, Claude Code, or Antigravity scoped access through BYOB CLI or Agent MCP. Your agent reads context, edits code, tests previews, and deploys from your terminal.
Git history and diffs
Every change lands as a commit. Inspect history, compare diffs, and see exactly what changed since the last deploy.
Inbox in every project
Every project ships with an inbox. Collect messages, leads, and feedback from your app without wiring a third party.
Email sending built in
Send magic links, OTP codes, and transactional mail from your own sender address. Resend-backed, no SMTP setup.
Google and magic-link login
Offer Continue with Google plus passwordless email codes. Sessions and callbacks are handled.
Custom domains and SSL
Point your domain at BYOB with guided DNS checks. Certificates are automatic.
Visual editing
Click any element in the live preview and describe the change. Copy, spacing, color, behavior.
AI testing agent
Run full-site or feature checks and get implementation-level feedback you can apply in one step.
Version rollback
Step between saved states or redeploy a known commit when an experiment goes sideways.
One-click deploy
Builds publish to production hosting in one step. Deploys can auto-save the project state first.
Deployment analytics
Worker traffic, errors, CPU timing, subrequests, and custom-domain status from the workspace.
Supabase aware
Connect Supabase and BYOB reads schemas, drafts migrations, and generates types that match your app.
Team collaboration
Invite people in and keep sessions coordinated so work never overwrites work.
- Vision inputs
- Voice coding
- Project templates
- SEO-ready output
- Context tracking
- Model lock
Simple pricing
Start with credits, upgrade when usage is steady.
Pay as you go when you are exploring. Move to Pro or Max when BYOB becomes part of your regular build workflow.
Pay as you go
$0
$1 = 100 credits
Pro
$25
2,000+ credits/mo
Max
$79
8,000+ credits/mo
Live estimator
What will your app cost?
Try the cost calculator. Drag the pages slider, toggle the options, and watch the agency quote vs BYOB update instantly.
Open full cost calculator →Number of pages: 5
Traditional agency estimate
$5,750 upfront
Yearly maintenance
~$1,150 / year
BYOB estimate
~$45 in credits
BYOB builds the same site from one prompt and hosts it on the edge. Planning estimates, not quotes.
See BYOB plansView full pricing
Need white-label and SSO? Talk to us →
BYOB builds a Japanese-first website for Tokyo gyms and studios. Publish trial-lesson bookings, weekly timetables and membership details, show prices in yen with consumption tax at 10 percent, and connect PayPay or card checkout. Pages target wards and stations, so nearby members find the right branch fast.
What Tokyo members check before a first visit
In Tokyo, choosing a gym is a careful process rather than an impulse. Prospective members compare the distance from their nearest station, the age of the equipment, the qualifications of the instructors and the monthly cost, then read reviews before booking a trial. Your website should answer those questions on the first screen: who teaches, what a session involves, how much it costs in yen and how to book a trial in a few taps. When the information is easy to find in Japanese, the studio already feels dependable.
Japanese-first language and page structure
Most Tokyo members read Japanese first, so the site should lead with Japanese rather than treating it as a translation. Class names, cancellation rules and membership terms need natural phrasing that a local reader recognises immediately. Layout matters too: clear headings, generous spacing and legible kana and kanji make a page feel considered. An English toggle can help foreign residents and visitors, but it should sit alongside the Japanese version instead of replacing it. Consistency between the two languages protects trust and keeps contractual details unambiguous.
Trials, timetables and monthly memberships
Japanese fitness businesses often use a free or fast trial lesson as the first step, and a studio near a busy station may run several each day. Publish a weekly timetable that is easy to scan on a phone, let visitors reserve a specific class, and send a confirmation straight away. For membership businesses, spell out the joining fee, the monthly amount and the notice period for leaving, because Japanese contracts are read closely. Clear terms reduce front-desk questions and help prospective members decide with confidence.
Wards, stations and local search
Tokyo is a collection of distinct wards, and members usually search by the area they can reach. A page for Shibuya, Setagaya, Koto or Nakameguro can each carry its own schedule highlights, walking directions from the nearest exit and notes on parking or bicycle storage. That structure helps you appear for station-level searches and gives readers a concrete reason to choose the closest branch. Keep every ward page genuinely different, because copied text reads as filler and rarely earns the trust this market demands.
Yen pricing, consumption tax and payment habits
Display all prices in Japanese yen and treat consumption tax at 10 percent consistently, either included in the headline figure or clearly added. Tax-inclusive prices are the norm for consumer-facing fitness offers, so surprises at checkout damage confidence. Cards are widely accepted, and PayPay has become a familiar mobile option for smaller purchases such as drop-in classes and merchandise. State renewal and cancellation terms in Japanese, and make the recurring nature of a subscription obvious before the member confirms payment.
Launch a site the studio controls
BYOB turns a written description of your Tokyo gym into a working website you can edit visually and extend with data storage for bookings and members. It publishes to a.jp domain you control, and because you keep the source code, adding a second branch or a members-only area later is an extension rather than a rebuild. For a studio that wants to look established from the first day, that ownership avoids ongoing agency fees and keeps decisions in-house.
FAQ
Frequently Asked Questions
Can members book a trial lesson on the site?
Yes. You can publish a trial booking form that captures the preferred class and date, then send a confirmation by email, without adding a separate booking service.
Should the Tokyo site be in Japanese?
Japanese should lead, because that is what most local members read, with an English option for foreign residents and visitors rather than a replacement.
How is consumption tax handled?
Prices are shown in yen with consumption tax at 10 percent treated consistently, generally included in the displayed amount for consumer fitness offers.
Can I accept PayPay and cards?
Yes. Card payments and PayPay can both connect to the checkout, which suits a market where mobile QR payments are common for smaller purchases.
Do I need a.jp domain?
A.jp domain reinforces a local business and is easy to publish to with BYOB, though an existing domain can work just as well.
Build the first version today.
Start with one clear prompt. BYOB will help turn it into a product you can inspect, edit, test, and ship.