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available 24/7
Office Address
21 Ayodele Ogunkoya Street
Off Governor's Road, Ikotun, Lagos
Phone Number
(+234) 812 769 2417
Business Emails
Help support
Email support@illusys.com.ng For help with a current product or service or refer to FAQs and developer tools.
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Explore our services and discover how we can help you achieve your goals
We Build Mobile Apps That Your Customers Actually Love — Android & iOS
From idea to App Store in 8–16 weeks. Built with Flutter for Android & iOS.
Home
Mobile App Design & Development
8–16 Wks
Avg. delivery time
2 Platforms
Android & iOS, one codebase
Flutter
Cross-platform framework
1 Live App
TheFlicksOn — in stores now
One Codebase. Two Platforms. Real Users.
iLLuSys LTD builds cross-platform mobile applications using Flutter — so your app runs natively on both Android and iOS from a single codebase, cutting your time to market in half and reducing development costs significantly compared to building two separate apps.
Flutter Cross-Platform Development- Custom UI/UX Design
- Backend & API Integration
- App Store & Play Store Submission
- Push Notifications & Analytics
- Ongoing Maintenance & Support
Recognise any of these?
⚠ You have a great app idea but no technical team to execute it
⚠ You've been quoted ₦5M+ by agencies but don't know what you're paying for
⚠ Your customers are on their phones, but you don't have a mobile presence
⚠ You built an app before and it flopped because UX was ignored
Live App Reference
TheFlicksOn — Streaming Platform
A fully functional video streaming app built by iLLuSys LTD. Available on both Android and iOS. This demonstrates our ability to build complex, media-rich mobile products from scratch.
⚡ Q3 2026 dev slots are limited. We take on a small number of app projects each quarter to ensure quality delivery. Book a discovery call now to secure your slot.
Our Mobile App Development Process
1. Discovery & Scoping
We map your app's full feature set, user flows, and technical requirements in a structured session.
2. UI/UX Design
Wireframes and high-fidelity mockups reviewed and approved before a single line of code is written.
3. Flutter Development
Agile sprints with regular demos. You see progress every 2 weeks, not just at the end.
4. QA, Launch & Support
Full testing, App Store and Play Store submission handled by us. 90-day post-launch support included.
Why Choose iLLuSys?
Flutter Experts: We specialise in Flutter — not jack-of-all-trades generalists. Your app performs natively on both platforms.
Transparent Pricing: No surprise costs. We scope everything upfront and fix pricing before development starts.
Nigerian Context: We understand local payment gateways (Paystack, Flutterwave), low-bandwidth optimisation, and Nigerian UX preferences.
Most mobile apps start from ₦1.5M for a straightforward product. Complex platforms with custom backends typically range from ₦3M–₦10M. Book a discovery call for an accurate estimate for your idea.
Frequently Asked Questions
Yes. We use Flutter, which lets us deliver a single codebase that runs natively on both Android and iOS — saving you time and money versus two separate apps.
Most apps take 8–16 weeks from kickoff to App Store submission, depending on complexity. We give you a precise timeline after the discovery session.
That's fine — most of our clients come to us at idea stage. We handle discovery, UX design, development, and launch end-to-end.
Absolutely. We have experience integrating Nigerian payment gateways, bank transfers, USSD, and other local fintech APIs into mobile apps.
Yes. On project completion, full source code and all assets are transferred to you. You own everything.
Need a website to complement your app? → Website Design Services
Want to automate your backend operations? → Digital Transformation Services
Book My Free App Discovery Call
Tell us about your app idea and we'll confirm feasibility, scope, and a ballpark cost — no obligation.Book My Free App Discovery Call
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