App & Website Development.
Sites that sell. Apps that ship.
A beautiful website that doesn’t bring leads is a problem, and an app that nobody uses is a waste. We build websites that turn interest into inquiries, and we only build mobile apps with Flutter — ensuring fast, reliable, and native-feeling experiences across all devices.
Dear Business Builder,
Let’s be honest.
Your website is often the first place people meet your business. If it’s slow, confusing, or ugly, they leave. And they don’t come back.
A great website isn't just about looking good. It’s about working hard. It should tell your story, handle your sales, and build trust while you sleep.
We don’t just write code; we build digital assets that convert visitors into loyal customers. That’s what we help businesses do every day.
Yours in Innovation,
Sonismarts Team.
Great sites aren't an accident.
They're engineered.
Strategic design plus high-performance engineering — platforms that load fast, rank well, and turn visitors into customers.
Blueprint
Plan for conversion
We don't just start coding. We map the journey, define the conversion path, and structure content to take visitors from curious to customer.
Build
Speed meets beauty
Built on modern frameworks like Next.js and React — so it loads instantly, ranks higher, and feels fluid on every device.
Launch & grow
Never really done
We launch, monitor, and optimise — and hand you a CMS friendly enough to update content without calling a developer.
A site that does the selling.
Even while you sleep.
Fast, search-friendly, and built to convert — your best salesperson, working every hour you don't.
Priced to pay for itself.
No surprises.
Transparent website packages — build it, see the number, and only pay for what you need. (Mobile apps are priced further down.)
Landing Page
Launch a campaign or product with one page that sells. Live in 1–2 weeks.
Corporate Site
The full digital home for an established business. Live in 3–4 weeks.
E-Commerce
A complete online store that sells while you sleep. Live in 4–6 weeks.
One codebase. Both app stores.
We build with Flutter.
Two native apps cost twice and drift apart. Flutter ships iOS and Android from a single codebase — fast, native-feeling, and far cheaper to build and maintain.
One codebase, two stores
iOS + Android from the same source — no building (and paying) twice.
Native-feeling, 60fps
Smooth and responsive — indistinguishable from native to your users.
Faster & cheaper to ship
Less code to write and maintain means lower cost and quicker launches.
Built to scale
A clean architecture that grows with your product, not against it.
Apps, priced in the open.
Milestones, not lump sums.
Starting points for a scoped build — you pay in milestones as work is delivered, the code lives in Git from day one, and the source is yours on full payment.
MVP / Starter App
Validate your idea with a real app in users' hands in 6–10 weeks.
Business App
A full product on both app stores, ready to grow. 10–16 weeks.
Desktop App
A professional desktop application for Windows & Mac. 10–16 weeks.
30–40%
Before design begins
20–30%
UI/UX designs approved
20–25%
Staging build complete
Balance
Final launch
Every app starts with a paid scoping session so the quote you get is real — not a guess. 30-day post-launch warranty included on every build.
Sites we've shipped.
Built to perform.
ResQ Access
ResQ Access
Kilimedair Aviation
Kilimedair Aviations
Aquacom
Aquacom Africa
Alkebulan Travels
Alkebulan Travels
Things people ask.
Sites and apps.
Usually 4–8 weeks depending on scope. A focused brochure site is quicker; a custom store or platform takes longer to get right.
Yes — and only with Flutter. One codebase ships to both iOS and Android, so you get a fast, native-feeling app without paying to build it twice.
Because no two apps are the same — features, integrations, and scope vary wildly. Tell us your idea and we'll send a clear, honest quote rather than a misleading number.
Always. We design mobile-first, so it looks and performs perfectly from phones to widescreens.
Yes. We build on friendly CMS platforms and train your team, so day-to-day edits don't need a developer.
We can — maintenance plans cover fast hosting, SSL, and backups so you never worry about downtime.
Your site, working harder
A pretty site that doesn't sell is decoration.
Let's build one that earns.
We'll audit what you've got, find the leaks, and build a site or Flutter app that turns visitors into revenue.
