Built it alreadyGet It Live
We’ll get it live.
Security, backups, testing, deployment and support for the app you’ve made, without taking it away from you.
Audits from£1,495 + VAT
Get my app live We finish what AI started.
You built it. We’ll get it live.
Your AI app, made secure, reliable and ready for real business. Check it. Fix it. Run it.
A free Snag Check. No card needed. Prefer to talk? 01908 887180
Not built it yet? Run it Past Daniel, or we’ll build it for you.
Production Readiness AuditExample
VerdictReady subject to specified actions
- OwnershipClear
- Business workflowsClear
- Users and permissionsImportant
- Data and reportingClear
- Application securityBlocker
- DeploymentClear
- Backups and recoveryImportant
- MaintainabilityClear
Why Rectangle Red?
You own the code.Always.
We finish what AI started.
Backed by bespoke business software experience since 2007.
No offshoring.
All development is done in-house, in the UK.
Milton Keynes based, serving the UK.
Meet us face to face, or online.
No sales. Talk directly to engineers.
No helpdesk. No account managers. The people you talk to do the work.
Already built it? Or not yet?
Not built yetGet It Built
We’ll build it for you.
Bespoke business software, web portals and mobile apps, made by our own UK engineers since 2007. You own the code.
Not sure what you need?Run it Past Daniel, free
Build it for me Daniel AI · Free
Still an idea? Run it Past Daniel.
Tell Daniel what you want to build. Daniel asks the right questions and gives you a plan in minutes. Free.
- 01Tell Daniel.
- 02Answer a few questions.
- 03Get the plan.
“Rectangle Red listens to our needs, and has the ability to produce innovative, cost effective and timely solutions to fulfil them.”
Group Managing Director, Orange Genie
“Working with Rectangle Red has been very straightforward as they have always been available and responsive.”
Marketing Manager, RhinoDeck Ltd
We love vibe coding.
We use tools like Claude Code and Codex in our own work. They’ve made us faster, and new projects can cost less than you might expect. The tools write the code. Our engineers answer for it.
Eight ways a working app lets a business down.
A demo doesn’t have to survive real users. A business app does. We look for all eight, and fix what we find.
- Risk 01
The webhook that trusted anyone
Anyone could fake a payment or an order.
We check every incoming call is genuine.
- Risk 02
The database anyone could read
Customer data, open without a login.
We lock it down to the right people.
- Risk 03
The API key in the browser
Anyone can copy it and run up your bill.
We move keys onto the server.
- Risk 04
The launch-day crash
Fine with five users. Down with fifty.
We test it under real load first.
- Risk 05
The backup that wasn’t
It never ran, or it won’t restore.
We test the restore, not just the backup.
- Risk 06
Two people, one record
One person’s save wipes out another’s.
We stop changes overwriting each other.
- Risk 07
Reports that look right, and aren’t
Figures the business relies on, quietly wrong.
We check them against the data.
- Risk 08
The AI that kept making it worse
Every fix breaks something else.
We find the real cause and fix that.
Everything we do
Get It Live
Check my app.Find out where you stand.Fix my app.Stop prompting. Call an engineer.Secure my app.Find out who else can get in.Run my app.We’ll keep it healthy.
Get It Built
Bespoke software.Built around how your business works.Web portals.Your customers, connected to your systems.Mobile apps.iOS and Android, built in the UK.AI automation.Take the boring work away.Legacy systems.We take on software others left behind.Fractional CTO.Senior technical leadership, when you need it.