High-level apps, built in weeks not months
Bespoke applications we design, build, test and maintain — and you own the code. Agency-grade software at a fraction of agency cost and time. One-time build plus monthly upkeep.
- Booking, portal or dashboard
- Secure login + simple admin
- 1–2 integrations
- Optional AI feature
- Hosting, upkeep & minor changes
- Multi-user with 2–3 roles
- Full admin dashboard
- 3–4 integrations + payments
- 1–2 real AI features
- Monitoring + upkeep included
- Multi-tenant or native mobile
- SSO, teams & advanced roles
- Custom API + 5+ integrations
- Advanced AI / custom agents
- Priority support SLA
- Beyond Premium in scope
- Multi-platform or complex logic
- A dedicated build team
- You own all the code
You own the code. Minor changes included in the monthly · major changes quoted separately · add AI Employees any time.
Custom apps — your questions answered
How much does a custom app cost in the UK?
HELIX custom apps start at £2,499 for a single-purpose app, £4,999 for a multi-feature product, and £9,999 for a bespoke platform — each one-time plus a monthly upkeep fee (£99–£399). Larger enterprise builds are scoped individually.
How long does it take to build a custom app?
Roughly 3–4 weeks for a Basic app, 6–9 weeks for a Standard product, and 10–16 weeks for a Premium platform — a fraction of the 3–9 months a traditional agency typically takes.
Do I own the code?
Yes — you own the full source code and repository from day one. The optional monthly covers hosting, monitoring and minor changes; major changes are quoted separately.
What's the difference between an app and a website?
A website presents your business; an app does a job — bookings, portals, dashboards, marketplaces or internal tools with logins, data and workflows. HELIX builds both.
Can you build a mobile app?
Yes — native mobile apps sit in the Premium tier, alongside multi-tenant platforms and advanced AI features.
How is HELIX cheaper than a dev agency?
HELIX builds with AI-assisted development, so the same agency-grade outcome ships in weeks not months, at a fraction of the £35k–£250k agencies typically charge — and you still own the code.
Let's build the right thing.
Tell us what you need — we'll come back with a clear scope and a fixed price. Email-first, no pressure.
Book a free consultation →