Service
Web App Development
From customer portals to full SaaS products, we design and build fast, secure web applications with modern stacks, clean code and a product mindset.
The problem
Spreadsheets and off-the-shelf tools only take you so far.
At some point your business outgrows generic software. You pay for five subscriptions that don't talk to each other, your team copies data between them and the one workflow that makes you different has no tool at all. A custom web app fits the way you work, runs in any browser and can become a product you sell.
What changes for you
- One system replaces a patchwork of subscriptions and spreadsheets
- Your unique process becomes software, and potentially a product you sell
- Fast, secure, mobile-friendly apps that scale with your customers
Why it works
- Built around your workflow, not a template
- Modern, fast and secure from day one
- Designed to grow from MVP to thousands of users
What you get
- 01Product discovery and UX design
- 02Next.js and React front ends
- 03APIs, databases and authentication
- 04Payments, subscriptions and integrations
- 05Hosting, monitoring and ongoing support
Use cases
What we can do for you.
SaaS products
Turn your expertise into subscription software with sign-up, billing, roles, onboarding and an admin dashboard.
Client portals
Give customers a secure login to see projects, documents, invoices and messages instead of chasing email threads.
Marketplaces and booking platforms
Two-sided platforms with listings, search, scheduling, payments and reviews.
AI-powered apps
Apps that read documents, generate content or answer questions using your own data, built with guardrails and cost control.
How it runs
How a project runs.
Typical timings. We confirm yours in a fixed scope before any work starts.
- 01
Week 1
Product workshop
We define the users, the core jobs and the smallest version worth launching, then turn it into a fixed scope.
- 02
Weeks 2–3
Prototype
Clickable designs of every key screen so you can test the flow with real users before we build.
- 03
Weeks 3–10
Build and weekly demos
Working software on a live preview link every week. You click through it, we adjust.
- 04
Weeks 10–12
Launch
Security review, performance tuning, analytics, backups and a calm go-live.
- 05
Ongoing
Iterate
We watch usage, fix friction and ship new features on a steady cadence.
Tools and platforms we use
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Supabase
- Stripe
- OpenAI & Claude APIs
- Vercel
- AWS
Proof
Related work.
Why PlanB Digital?
We've shipped our own SaaS
Parse Statement, MayaGen, Ylper and YatraHQ are products we built and run, so we know what it takes after launch.
Modern, fast stack
The same tools used by top startups, so your app is quick, secure and easy for any developer to maintain.
Design that sells
Our marketing roots mean the app looks great and the onboarding actually converts sign-ups into users.
Frequently asked questions
How long does a web app take?
A focused MVP usually takes 6 to 12 weeks. We scope in phases so you can launch, learn and grow.
Do I own the code?
Yes. The code lives in your repository and you own it outright.
Can you build an MVP first?
Yes, and we recommend it. We launch the smallest version that proves the idea, then grow it based on real usage.
Who hosts the app?
Usually Vercel and a managed database in your own accounts. We set it up, monitor it and hand you the keys.
Can you take over an existing app?
Yes. We start with a code audit, fix the urgent issues and then keep improving it.
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Ready to grow faster?
Book a free strategy call. We'll audit your current marketing and show you exactly where the growth is.