Custom AI apps & SaaS
Turn your idea into a working AI-powered product: from a focused MVP to a SaaS platform ready to scale.
Custom software & web app development
Outgrown your spreadsheets and off-the-shelf tools? Get software that fits
“We’ve outgrown our spreadsheets, and nothing off the shelf fits.” It started with one sheet. Now it’s twelve, linked together, understood by one person, and one wrong edit away from a bad week.
The problem
Workarounds cost more than they appear to
Or you pay for three SaaS tools that each do 70% of what you need, and your team fills the gaps with copy-paste. Customers phone to ask things they could look up themselves, if only there were somewhere to look.
You’ve searched for software that fits and keep finding the same two options: tools built for a different kind of business, or enterprise systems with a price tag and setup time to match.
The solution
What we build: software that fits, and that you own
We build web applications, customer and partner portals, internal tools and APIs designed around how your business actually runs. Before any code, we walk through how work flows today, where it breaks, and what each person using the system needs to see on screen.
Not every project needs AI, and we won’t add it for the sake of it. But because we build AI systems every day, we design your software so AI features can be added later — clean data, documented APIs — without a rebuild.
BuildAI is a team of 15 in Dhaka, Bangladesh, with 565+ projects delivered by our team. More about us.
Typical custom software projects
Customer portal
Clients track orders, download invoices and raise requests themselves, replacing dozens of emails a day.
Operations tool
One internal app replaces a web of spreadsheets for scheduling, job tracking and stock levels.
Legacy rebuild
An ageing in-house system rebuilt on a modern stack, with years of data migrated safely.
Custom or off-the-shelf? An honest guide
Custom software isn’t always the right answer. Here’s how we advise clients:
Choose off-the-shelf when…
- Your process is standard, like basic bookkeeping or email marketing
- An existing tool covers 90% or more of what you need
- You need something working this week
- The process doesn’t set you apart from competitors
Choose custom when…
- The way you work is part of how you compete
- You pay for several tools and join them by hand
- Per-seat pricing is growing faster than your revenue
- You need to own your data and your roadmap
What you get
- Workshops and a written specification of screens, user roles and data
- UI/UX design you approve before development starts
- A tested web application, deployed to your own hosting or cloud account
- Data migration from spreadsheets or your old system
- Automated tests, technical documentation and admin guides
Every project also includes a free initial consultation, a dedicated timeline, written progress updates on a fixed schedule and full source code ownership on final payment.
Typical timeline
Typically 3–10 weeks, depending on the number of screens and integrations.
Weeks 1–2
Discovery and design
Process walk-through, written specification and a clickable prototype you can put in front of your team.
Weeks 2–8
Development
Fortnightly demos on a staging site, so you see progress and steer it as it happens.
Weeks 8–10
Migration and launch
Data import with checks, user training and go-live support.
The weeks shown describe a project at the upper end of the range. A smaller application runs the same three stages in less time.
Questions businesses ask before starting
Isn’t custom software far more expensive than a subscription?
Up front, yes. Over three to five years it’s often cheaper once you add up seat licences, workaround tools and staff time. You own an asset instead of renting one. We’ll show you the comparison for your case.
What if you’re not around after launch?
Once the final invoice is paid, you own the code, hosting and documentation, so any competent developer can pick it up. A monthly support plan is there if you want us to stay involved, and you are never locked into one.
Can you migrate our existing data?
Yes. Migration is planned from the start, with trial imports and reconciliation checks, so nothing is lost at go-live.
Which technologies do you use?
Modern, widely used ones: typically TypeScript with React or Astro on the front end, Node.js or Python on the back end, PostgreSQL, and AWS, Google Cloud or Cloudflare. That makes hiring help later easy.
Typical investment
Growth package
$2,000–$8,000
Growing companies
Small internal tools can fit the Starter package. Most portals and business applications fall into Growth; large multi-team systems are Enterprise.
Compare all packagesPart of our Build services, for startup founders and early-stage SaaS teams.
Related services
Maintenance & support
Keep your software and AI systems secure, up to date and improving, with a named contact and the response time your plan sets.
Talk to us about custom software
Describe the problem in a few sentences. We reply within 24 hours on weekdays, and after a free call you get a clear plan, timeline and fixed quote, with no obligation.