services

Custom App Development

SAP Build apps shaped around your people

Is there a process in your business that standard SAP doesn’t quite cover?

Maybe it’s a spreadsheet that’s quietly become business-critical. Approvals chased over email. Or teams on the warehouse floor and out in the field who need SAP on a phone, not a desktop.

We build custom SAP apps for exactly that. We start with the people who will use the app, so it fits how they actually work, and connects cleanly to the SAP systems you already rely on.

Let's build your perfect solution

Delivering real impact.

Our Standards

What you always get from our custom apps

Mobile Friendly

Designed with Fiori and responsive principles where they add value. A working experience on the go.

Offline capability

Access and update critical data without a connection, syncing once you're back online. Built for teams in the field.

Exceptional User Experience

Intuitive, easy to navigate, quick to adopt.

End-to-end Support

From development to deployment and beyond. We're with you through the whole thing.

Agility Built-in

Purpose-built for flexibility and scalability, holding up as your business changes.

The latest BTP technology

Built on current SAP BTP capability. Future-ready from launch.

Upgrade-ready by design

Why We Build Clean Core

We build every app on BTP’s extension layer, so your SAP core stays standard. Custom code inside the core becomes technical debt that surfaces at every S/4HANA upgrade, when each modification has to be found, tested, and rebuilt or unwound. Built outside the core, your apps are designed to carry on through upgrades without that work, which keeps the next upgrade simpler to plan.

Talk to us about building clean

The way we work

People before process

Every build starts with the people who'll actually use it, not a requirements document. Discovery workshops, hosted at our AppHaus space or virtually, use the SAP AppHaus Methodology, human-centred design and design thinking, to understand the real problem before any technology gets chosen.

The right tool for the job

SAP Build gets you a working solution fast, low-code, ideal when speed matters and the requirement is well understood. SAP Build Code gives you the flexibility of SAPUI5 and CAP for complex, highly customised experiences, when greater control is required. We choose based on your problem.

Development

Prototyping and design first, so what gets built is functional and something your team actually wants to use.

Testing

Full support through user acceptance testing, hands-on, not just handed over. We're available to adjust, answer questions, and make sure the solution meets what was actually agreed, with a smooth transition from testing to go-live.

People before process

The right tool for the job

Development

Prototyping and design first, so what gets built is functional and something your team actually wants to use.

Testing

Engineering

Notification and works order processing,
Physical inventory,
Offline and field processing.

Master Data

Data approvals,
Mass processing,
Data health,
Self-service requests.

Purchasing

Purchase requisitions and orders,
Purchase order release,
Punch-out catalogues.

Warehouse Management

Internal,
Inbound and outbound processes,
Real-time monitoring.

Human Resources

Manager approvals and team views,
Employee self-service, such as timesheets and leave.

Something new

Support and ticketing,
Visitor management,
Anything unique to your business.

Trusted by

Work we’ve delivered

Built for a specific problem

Every build starts with a real problem. Here's what that's looked like in practice.

Product Purchase App

Designed for Autoglass depots searching, identifying, and purchasing products without needing an SAP specialist on hand.

Impact: A streamlined, brand-aligned sales process and the first step in Autoglass's clean core journey.

Full case study

Mobile Timesheet App

Designed for NATS employees recording time on the move, without losing the layout they already knew.

Impact: "Significantly improved users' engagement and satisfaction with time recording." (Emma Chambers, NATS)

Full case study

Goods Receipt App

Designed for replacing Watches of Switzerland's legacy, server-based goods receipt process with a BTP-native app.

Impact: Faster, more reliable performance, a closed security vulnerability, and full legacy server retirement.

Full case study

Engineering & Warehouse App Suite

Designed for Princes Foods, replacing an end-of-life legacy system across warehousing, purchasing, and engineering, from malfunction notifications to master data governance.

Impact: 18 applications deployed and counting, paper processing removed from engineering, legacy systems retired, IT complexity reduced.

Full case study

Our clients say it best

Discover how they’ve trusted us to deliver custom SAP apps that streamline processes and accelerate their business.

Rowan Parr – Solution Lead, Sysco

"The implementation has gone so well, Sysco GB now sees France as the new standard for warehouse efficiency. Normally, people resist change—but Bluestonex created...

Chris Winfrey- Network Delivery Director, Brakes UK

"We have now got Maextro live in all of our 20 depots. It is delivering everything we expected it to deliver and probably overdelivered in some...

Barry Croghan – IT Infrastructure Manager, Autoglass Ireland

"The BTP App is the equivalent of 3 full-time employees.”

Glenn Bamford – Head of Business Systems, Watches of Switzerland

“They (Bluestonex) act as an extension of our team, bringing innovation and expertise that we lack internally. With their support, we’ve been able to...

Custom app queries

Frequently Asked Questions

It depends on scope, a low-code SAP Build solution and a pro-code application built with SAP Build Code, SAPUI5, and CAP are genuinely different investments. A discovery session scopes it properly before either of us commits to a number.
We work as part of your team, not against a fixed spec, so changes get absorbed into the project instead of triggering a change request and a delay.
Building on BTP's extension layer, rather than modifying your core, protects you here. Platform updates don't force a rebuild of something that never touched the core in the first place.
A SAP Build app can be live in weeks. A custom application built with SAP Build Code, using SAPUI5 and CAP, is scoped based on complexity, but starts with a clear timeline agreed in the discovery session, not an open-ended estimate.

Ready to build your perfect solution?

Here's how to get started:

Get Started Now

Step 1

Book a Call

Schedule a call to see how our services can meet your unique business needs.

Step 2

Co-Innovate with our Experts

Join design sessions and workshops with our app development specialists to shape the right solution.

Step 3

Deploy

Integrate your solution into your existing systems and start realising the benefits.

Step 1

Book a Call

Schedule a call to see how our services can meet your unique business needs.

Step 2

Co-Innovate with our Experts

Join design sessions and workshops with our app development specialists to shape the right solution.

Step 3

Deploy

Integrate your solution into your existing systems and start realising the benefits.

Custom App Development

Got a unique problem or process that needs something custom?

Tell us about your problem:

Custom App Development