SaaS founders with paying users
People pay for a rough version. Now billing and team accounts have to hold up.
We add Stripe Billing, team roles, and an admin panel, and fix weak spots as usage grows. No product yet? See MVP development.
Web app development
Custom web apps, SaaS products, and internal tools
For founders and ops teams at growing businesses, starting with the job that hurts most.
- Code in your GitHub from day one
- Your data in your own cloud
- You talk to the founders
30 minutes with a founder. Times show in your time zone.
Web app development at a glance
Custom web app development for startups and growing businesses: SaaS products, customer portals, and internal tools. Code in your GitHub, data in your cloud.
- Who it’s for
- SaaS founders with paying users
- Teams running on spreadsheets and email
- Teams that need a customer portal or internal tool
- What we build
- Custom web apps and internal tools
- SaaS product development
- Customer portals and dashboards
- Operations software: orders, inventory, and invoicing
- Built with
- Next.js and TypeScript, with Node.js or Python on the server
- PostgreSQL
- Cloud in your account (AWS or Google Cloud)
- GitHub repository in your name
- Stripe
- What you own
- Code in your GitHub from day one
- Cloud and store accounts in your name
- IP assigned as each invoice is paid
How we'd build yours
Example plan
Case studies go here once clients agree to be named. Until then, an example: a B2B customer portal for a wholesale company.
- Scope
We map how orders and invoices move today and agree on what launch includes. You click through the portal screens.
- Accounts
Logins and roles for staff and customers, with accounts imported from spreadsheets.
- Orders
Order history and live status from the current system's API, plus reorders. A customer finds an order without emailing.
- Payments
PDF invoices, Stripe payment links, and shipping emails. One order, placed and paid.
- Dashboard
An admin dashboard with open orders, overdue invoices, and portal usage.
- Launch
Testing with a few real customers, then launch.
This is an example plan, not a past client project. Yours comes out of scoping.
Who this is for
Sound familiar?
Teams running on spreadsheets and email
Orders arrive by email, inventory lives in a spreadsheet, and nothing matches at month end.
We build one web app for orders, inventory, and invoices, with email alerts and payment links.
Teams that need a customer portal or internal tool
Customers email us for order status, and partners want their statements every month.
We build a portal where they check orders and download statements, or an internal tool with your numbers on one screen.
What we build
Custom web apps and internal tools
Some work doesn't fit off-the-shelf software. We build web apps around how your people already work, starting with the job that hurts most. If a low-code tool already fits, we'll say so.
- Dispatch for a field service team
- Purchase approvals with an audit trail
- Replacing a pile of Google Sheets
SaaS product development
We build what turns a paid product into a business: separate customer accounts, plans and payments on Stripe Billing, team roles, and an admin panel. If v1 is breaking as users grow, we fix that first.
- Plan changes and usage limits
- Invoices with sales tax or VAT
- Moving a no-code build onto code you own
Customer portals and dashboards
A portal is a private login where customers or partners check orders and download invoices, so your team answers fewer emails. A dashboard puts the few numbers you act on in one place.
- B2B portal for reorders and statements
- Customer portal with order tracking
- Owner dashboard: sales, receivables, and inventory
Operations software: orders, inventory, and invoicing
One web app where an order updates inventory, creates an invoice, and emails a payment link. Sales reps book orders from their phone, and the owner sees what's pending without calling anyone.
- Inventory across warehouses or locations
- Exports for your accountant
How a project runs
Plain English at every step, and calls set around your working day.
How we start
We start with scoping: we map the current flow with you and your users and agree on what launch includes. Before any code, we set up the GitHub repo, domain, and cloud accounts in your name. IP is assigned to you as each invoice is paid.
Working together
We set call times around your working day, and you review the build on a preview link whenever it suits you. AI drafts; a named engineer reviews every change. We price by the project or the week, so faster work doesn't raise your bill.
A board you can open
Every screen is a card on a shared board. What we need from you, like API keys, test accounts, and brand assets, sits in its own column. See how we work.
Stack, and why
Next.js and TypeScript, with Node.js or Python on the server
Widely used, so your own hires can take over later.
PostgreSQL
Keeps totals right when many people work at once.
Cloud in your account (AWS or Google Cloud)
The account and the bill are in your name.
GitHub repository in your name
Every change is saved with who made it and why.
Stripe
Subscriptions, invoices with sales tax or VAT, Apple Pay, Google Pay, and cards.
A shared Slack channel with our team
Questions and decisions stay in writing.
Questions founders ask
Straight answers, including the ones about cost and time.
How much does a custom web app cost?
It depends on the number of screens and user types, the integrations, and how much data moves over. On the call, you get a ballpark range. After scoping, you get a written estimate for each phase. We price by the project or the week, never by the hour.
How long does it take to build a web app?
It depends on screens, user types, and integrations. Scoping ends with a written plan, so you know what the build involves before it starts.
What's the difference between a web app and a website?
A website mostly tells people about you: pages anyone can read. A web app is software people log in to and use to get something done, like placing an order, managing a team, or checking a dashboard. Many products need both, and they can share one codebase.
What is SaaS development?
SaaS development is custom web application development for software that customers use in a browser, usually on a subscription: accounts and sign-in, a database, billing, an admin area, and the features that do the job. We build it so you own the code and the cloud accounts.
What are internal tools, and when should we build one?
Internal tools are apps only your team uses: admin panels, dashboards, approval flows, or a replacement for a spreadsheet that has outgrown itself. Build one when the same manual job eats hours every week and no off-the-shelf tool fits without workarounds.
Who owns the code and IP?
You do. Code lives in your GitHub from day one. IP is assigned to you as each invoice is paid. Cloud, domain, and tool accounts are in your name too.
Should we use a low-code tool like Retool instead?
Sometimes. For a simple admin screen and a small team, a low-code tool is often faster and cheaper. Custom code wins when customers log in, seat fees add up, or your rules don't fit the tool.
Can the web app connect to the tools we already use?
Often. Payments, accounting, CRM, e-commerce, and team-chat tools usually have an API we can connect to. We check each tool's API during scoping and tell you in writing what will connect.
Can you move our data from spreadsheets or an existing database?
Yes. We import customers, products, orders, and price lists, then check the totals with you before launch.
Where will our data live?
In your own AWS or Google Cloud account, in the region you choose (e.g., us-east-1). See Security and IP.
What hours do you work?
Our team is in India. We set call times around your working day, wherever you are, and questions go in a shared Slack channel.
Tell us what your web app needs to do.
Or tell us which one sounds like you:
Or put it in writing
A few lines are enough to start, and nothing here commits you to anything.
- Tell us what you’re building.Who it’s for, what it needs to do, and any deadline you’re working to.
- A founder reads it.You get a reply by email, usually with a couple of questions.
- We talk for 30 minutes.You leave with a ballpark range, and a straight answer if we’re not the right fit.
Prefer email? sales.bydtech@gmail.com.
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