Barry's Bold brand, class schedule and signup up front. Visit ↗
BYOB New inbox in every project
Fitness Website Builder in Seoul
Gyms in Seoul compete on convenience — show real-time availability, pricing, and a trial offer.
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
- South Korean Won (KRW ₩)
- Tax
- VAT at 10%
- Payments
- Cards, KakaoPay
- Domain
- .kr
Mobile-first and design-led; Korean content essential.
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 →
For a Seoul gym or studio, BYOB builds a mobile-first site with Korean content, class schedules and trial booking. It handles KRW pricing and 10% VAT and supports KakaoPay and card payments on a.kr domain, so members can sign up in the format they already use.
Pilates, climbing and the fast-growing niche studio
Seoul's fitness market has expanded well beyond large gyms, with reformer Pilates, climbing and boutique strength studios drawing loyal followings. These businesses often live or die on a clearly explained speciality, so the site should say in the first screen what is taught, at what level, and why it is different. Strong photography of the actual space and equipment matters in a design-literate city. For a new studio, a crisp niche is more persuasive than trying to appeal to everyone at once.
Personal training and the one-on-one market
Personal training is a major part of Seoul's fitness culture, and many members book individual sessions rather than a general membership. That makes coach profiles central: certifications, specialities and the style of each trainer should be easy to compare. A simple consultation or trial-booking form converts better than a long enquiry page. Because clients often commit to a package, be clear about session validity, transfers and refunds. Transparent terms build the trust that one-on-one coaching depends on.
Korean-first copy and KakaoTalk booking
Korean is the everyday language of Seoul, and members expect it across every page, from class names to cancellation rules. Write naturally rather than translating English literally, and use the terminology people actually search for. KakaoTalk is central to how Koreans communicate, so making it easy to ask a question or confirm a booking suits local habits. An English option can help international residents, but it should accompany Korean rather than replace it, since local search and trust are built in Korean.
KRW pricing and 10% VAT without surprises
Show prices in Korean won with VAT at 10% handled consistently; consumer-facing pages usually display the final amount. Korean fitness pricing often uses tiered packages and limited promotions, so present each option clearly and explain what happens when an offer ends. KakaoPay beside card payments matches how many members prefer to pay, and it speeds up sign-up. Clear, upfront pricing reduces the questions that otherwise flood a studio's messages and helps members choose a plan with confidence.
Off-peak access and the 24-hour gym
Seoul runs late, and many people train after work or in the early hours, which is why extended-hours and 24-hour gyms are common. If your facility offers late or unattended access, make the hours, security and entry process obvious on the site. Hourly or off-peak passes can attract members whose schedules do not fit usual class times. Clear operating information, including holiday hours, prevents frustration and positions the studio as one that understands how demanding Seoul working life can be.
FAQ
Frequently Asked Questions
Should my Seoul site be in Korean?
Yes. Korean is expected by local members and performs better in local search. An English option can help international residents, but Korean should lead.
What payment methods should I offer?
KakaoPay and card payments are standard in Korea. Offering KakaoPay alongside cards matches local habits and speeds up membership sign-up.
Do I need a.kr domain?
A.kr domain signals a Korean business and supports local trust, though a.com can work too. Fast, Korean-language content matters most.
How should promotions be presented?
Explain each package and what happens when a promotional period ends, so members are not surprised. Clear terms reduce messages to the studio and build confidence.
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.