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HDC Consultancy.

Service

App Development

Native and cross-platform mobile apps built to make your business run better, not just to tick a box.

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Free, no obligation · Harry replies personally.

A mobile app your team or customers will actually use, fast, reliable, and built around a real job to be done.

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What you get

  • iOS and Android, native or cross-platform, whichever fits
  • Works offline and syncs the moment signal returns
  • Connects to the CRM, database and tools you already use
  • Secure user accounts and sign-in done properly
  • Tested across real devices before it ever launches

Rated 5.0 on Google

Read our reviews

70%

of UK adults used a smartphone to access the internet (more than any other device)

1 in 4

of all apps are used once and then never opened again

Rated 5.0 on Google

Can HDC build a custom app or platform for my business?

Yes. We build custom web apps and platforms — from a quick MVP to a full system — that put your operation in one place: bookings, jobs, customers, dashboards and workflows, built around how you actually work and yours to own.

At a glance

What you get

  • iOS and Android, native or cross-platform, whichever fits
  • Works offline and syncs the moment signal returns
  • Connects to the CRM, database and tools you already use
  • Secure user accounts and sign-in done properly
  • Tested across real devices before it ever launches
  • Published to the App Store and Google Play for you
  • Prototyped first, so you see it before you commit

How we deliver

  1. 1 Free scoping call We map what the app needs to do, and tell you honestly whether an app is even the right answer.
  2. 2 Design & build We prototype the screens, agree them with you, then build and test on real devices.
  3. 3 Launch & support We handle App Store and Play submission, then keep it working as phones and systems change.

Problems we solve

  • Your team wastes hours on manual admin Jobs, photos and sign-offs get written on paper and typed up later, so the same information gets handled two or three times.
  • The system breaks the moment signal drops Your field teams work in basements and rural spots, and a tool that only works on full bars is no use where they actually need it.
  • Your data lives in separate islands The app, the CRM and the spreadsheets don't talk to each other, so people copy and paste between them and mistakes creep in.
  • You're not sure you even need an app An app is a big spend, and you don't want to pay for one if a website or a simple automation would do the same job for less.

Why it pays off

  • 70% of UK adults used a smartphone to access the internet (more than any other device) (Ofcom Online Nation 2023)
  • 1 in 4 of all apps are used once and then never opened again (AppsFlyer / Statista app retention data)
  • 90% of time on smartphones is spent in apps rather than the mobile browser (eMarketer)

Built with

Click any to see how we use it.

Live showcase

See our work, live

Real client sites we've designed and built. Load a live preview, or open the site in a new tab.

allseasongardenrooms.co.uk
All Season Garden Rooms website, designed and built by HDC Consultancy
All Season Garden Rooms Garden & Outdoor Living Visit site
driveonvehiclerental.co.uk
DriveOn Vehicle Rental website, designed and built by HDC Consultancy
DriveOn Vehicle Rental Automotive Visit site
fasttrackleasing.co.uk
Fast Track Leasing website, designed and built by HDC Consultancy
Fast Track Leasing Vehicle Leasing & Rental Visit site
krautomotivegroup.co.uk
KR Automotive Group website, designed and built by HDC Consultancy
KR Automotive Group Vehicle Leasing Visit site
www.splegal.co.uk
SP Legal Solutions website, designed and built by HDC Consultancy
SP Legal Solutions Commercial Law Visit site
mwgroundscrewsltd.co.uk
MW Ground Screws website, designed and built by HDC Consultancy
MW Ground Screws Industrial Foundations Visit site
freesolaruk.com
Free Solar UK website, designed and built by HDC Consultancy
Free Solar UK Renewable Energy Visit site
warmhomesfunding.com
Warm Homes Funding website, designed and built by HDC Consultancy
Warm Homes Funding ECO Grants & Funding Visit site
ukhousingclaims.co.uk
UK Housing Claims website, designed and built by HDC Consultancy
UK Housing Claims Legal Claims Visit site
bikecrashclaims.co.uk
Bike Crash Claims website, designed and built by HDC Consultancy
Bike Crash Claims Legal Claims Visit site
smarterbuild.co.uk
Smarter Build website, designed and built by HDC Consultancy
Smarter Build Construction & Improvement Visit site
smarterclean.co
Smarter Clean website, designed and built by HDC Consultancy
Smarter Clean Cleaning Services Visit site
g10events.co.uk
G10 Events website, designed and built by HDC Consultancy
G10 Events Events Visit site
ppafunding.com
PPA Funding website, designed and built by HDC Consultancy
PPA Funding B2B Funding Visit site
icm.support
Ivy Care Management website, designed and built by HDC Consultancy
Ivy Care Management Supported Care Transport Visit site

A selection of real client sites we've designed and built. Tap any one to open the live version.

Why choose HDC

What to expect from us

Fixed scope, clear price

We scope each app and agree a clear price up front based on what it actually needs to do, no vague day rates.

You own everything

The app, the code and the data are yours, with no lock-in. You can take them in-house or elsewhere whenever you like.

A senior UK team

You work directly with experienced developers, not a call centre or an offshore code factory.

We start with the problem

We begin with the job to be done, not a feature list, so you only build what genuinely earns its place.

Honest advice

If a website or a simple automation would solve it for less, we'll tell you straight before you spend on an app.

Free website audit

Already have a website that isn't pulling its weight?

We'll audit it properly and for free, your speed, SEO, design and conversions, then show you exactly what's costing you enquiries and how we'd fix it. No obligation and no hard sell. We give away genuine, high-value advice because we're confident in it: take it and act on it, with us or without us.

Get my free audit

A clear, no-jargon report, usually within a couple of business days.

Going deeper

Most business apps fail because they’re built to impress rather than to be used. So before anything else, here’s the honest answer most agencies won’t give you: a lot of the time you don’t need an app at all, a fast mobile website does the job for less. When an app is the right call, because people use it daily, it needs to work offline, or it has to reach phone features a website can’t, we start from the job your team or customers need to do, prove the idea with a prototype you can hold, then build something fast and reliable around it. It connects to the tools you already run, works when the signal drops, and gets onto the App Store and Google Play without the usual drama.

Native vs cross-platform vs web app, which do you actually need?

This is the decision that shapes the cost and the timeline, so it’s worth getting right before you build. There’s no single best answer, it depends entirely on what the thing has to do. A “web app” here means a mobile-friendly website that behaves like an app but needs no download. Here are the honest trade-offs:

NativeCross-platformWeb app
What it isSeparate iOS and Android buildsOne codebase for both storesA mobile site, no download
CostHighest (two builds)Mid, one build, both storesLowest
Best performanceYes, top-tierNear-native, fine for mostLimited by the browser
Works offlineFullyFullyLimited
Phone features (camera, GPS, push)Full accessMost of itRestricted
In the app storesYesYesNo
Best forHeavy performance or hardware needsMost business tools and appsInformation people check occasionally

For most local and trade businesses, the answer is cross-platform or a web app, not an expensive pair of native builds. We’ll tell you straight which one fits, even when that’s the cheaper option.

We start with the problem, not the app

The fastest way to waste money is to start with features and work backwards. We start with the job: what’s slow, manual or going wrong today, and would an app genuinely fix it? Sometimes the honest answer is that a tweak to your website or a simple automation solves it for a fraction of the cost, and we’ll say so. When an app really is the right tool, that same focus keeps it lean: it does the important job brilliantly instead of doing twenty things badly.

Built to keep working when the signal drops

For field and trade teams, an app that only works on full bars is no app at all. We build offline-first where it matters: the app holds what it needs on the device, lets people carry on working with no connection, and quietly syncs everything back the moment signal returns. Drivers, engineers and site teams keep capturing jobs, photos and sign-offs in basements and rural spots, and nothing gets lost on the way back to the office.

Connected to the tools you already run

An app that can’t talk to your other systems just becomes another place to type things twice. We build yours to connect to what you already use, your CRM, booking system, database or spreadsheets, so information flows automatically instead of by copy-and-paste. That’s usually where the real time savings live: not in the app itself, but in everything it stops your team doing by hand.

Who this is for

This is for established businesses with a specific operational problem an app could genuinely solve, trade and field teams capturing work on site, automotive and service firms who want customers booking from their phone, or any operation drowning in repetitive admin. It’s also for businesses whose customers would genuinely use an app regularly. If you just want one because competitors have one, we’ll have an honest conversation first, and quite often point you somewhere cheaper that works just as well.

The app mistakes that waste real money

Most failed apps share the same handful of mistakes. They’re built when a website would have done the job for a fraction of the cost. They launch crammed with features instead of nailing the one that matters. They ignore offline, so they break exactly where field teams need them. They don’t connect to existing systems, so they create double-entry instead of saving time. And they’re never tested on real devices, so they’re slow and buggy on the phones people actually own. We design every build to avoid all five, starting with the hardest question of whether you need an app at all.

Proof it works

We judge a build by whether people actually use it and whether it earns its keep, not by how flashy the demo looks. DriveOn (KR Automotive) is a good example of the thinking: an online booking journey designed to be effortless, which filled the diary because customers could book in seconds from their phone. We bring that same “make the job easy, make it reliable” approach to every app we build, and we’d rather talk you out of one than sell you something you won’t use.

Want to know whether an app is really the right answer for your business? Get your free scoping call, it’s free and there’s no obligation. Or see how this works alongside web development, AI systems and lead generation.

Frequently asked questions

Do I actually need an app, or would a website do the job?

Often a website does the job, and we'll say so if it does. An app earns its place when people use it regularly, need it to work offline, or it has to tap into phone features like the camera, GPS or push notifications. If it's mostly information people look at occasionally, a fast mobile website is usually cheaper and easier. We work that out with you before anyone builds anything.

Should we build native or cross-platform?

It depends on what the app has to do. Cross-platform (one codebase that runs on both iOS and Android) is faster and cheaper for most business tools and covers the vast majority of cases. Native makes sense when you need heavy performance or deep access to phone hardware. We'll recommend whichever genuinely fits, not whichever is bigger to build.

How much does an app cost to build?

It depends on what it needs to do, so we scope and quote each project individually, no vague day rates. Cross-platform tends to cost less than building two separate native apps. At the free scoping call we map the features, tell you what's essential versus nice-to-have, and give you a clear figure before anything starts.

Can the app work without signal?

Yes. We can build it to work offline and sync your data automatically once a connection returns. That matters a lot for field and trade teams working in basements, rural areas or anywhere the signal drops, they keep working, and nothing is lost.

Will it connect to the systems we already use?

Usually, yes. Most modern tools, CRMs, databases, booking systems, spreadsheets, have a way to connect, so the app can read and write to them rather than becoming yet another island of data. We confirm exactly what's possible with your specific stack at the scoping stage.

How long does an app take to build?

Most business apps take a few months from kick-off to launch, depending on how much they need to do. We start with a prototype you can hold within the first few weeks, so you're shaping the real thing early rather than waiting months to see anything.

Who handles getting it onto the App Store and Google Play?

We do. Submitting to Apple and Google has its own rules and quirks, and getting rejected costs you time. We prepare the listings, handle the submission, and deal with any back-and-forth so it lands on both stores without the usual drama.

Do I own the app and its code?

Yes, the app, the code and the data are yours. There's no lock-in and nothing held hostage if you ever decide to take it elsewhere or bring it in-house.

What happens after launch when phones and operating systems change?

Apps need a bit of upkeep, Apple and Google release new versions every year, and an app left untouched eventually breaks or gets pulled. We offer simple support to keep it running and compatible, or we hand it over cleanly if you'd rather look after it yourself.

How do you stop the app being one of the ones people delete?

By only building one worth keeping. Most apps get deleted because they're slow, confusing, or solve a problem the user didn't really have. We start from the actual job to be done, prototype it so it's intuitive before we build, and test on real devices so it feels fast and reliable from day one.

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Tell us what you need, we'll come back with honest, practical options.

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