United Kingdom · est. 2020
Software your business actually runs on.
We build custom business systems, web platforms and native mobile apps for companies that have outgrown their spreadsheets — then we keep building them as the business grows. Any industry, and we support everything we ship.
What we do
Four things, done properly.
Rather than a list of everything. If it isn't below, we'll tell you and point you at someone who does it better.
AI receptionist
A managed AI receptionist answering every call, text and WhatsApp enquiry around the clock, booking jobs straight into your calendar. See plans.
Custom business systems
The system that replaces the spreadsheet everyone quietly works around. Built to how your operation actually runs, with the awkward parts included rather than designed out.
Mobile applications
Native iOS and Android, plus cross-platform where one codebase beats two. Offline behaviour, push, and the App Store and Play submissions handled for you.
Web platforms & portals
Customer portals, operational dashboards and APIs — responsive from the first line, because most of your users arrive on a phone in a yard or a corridor.
Desktop, agents & integration
Windows services, background agents and the connecting work that makes a new system talk to the accounting, payroll and stock systems you already pay for.
Industries
We build for any industry.
A system is shaped by how your operation runs, not by a template, so the industry is rarely the constraint. The ones below are simply where we've been already — we arrive knowing the vocabulary, the compliance and the edge cases instead of learning them on your budget. Client work is confidential, so what follows is what we've built, not who we built it for.
Farming & agriculture
Field mapping and crop rotation, individual livestock records, grazing capacity in large stock units, camp rotation, resource scheduling against live weather, and yield and margin per hectare.
Property development
Staff, contractors and clients collaborating in one project plan, with roles assigned, activity logged in real time, and every step of the development programme under control.
Rental & property management
Tenant accounts, leases and portfolios, fault logging with timed escalation, automatic contractor assignment, vacancy lists and statements — with reports out to PDF and Excel.
Information technology
Device fleets managed remotely: live status across every machine, USB lock, screen lock, remote desktop, restart and remote wipe — including on hardware that has been offline for weeks.
Finance & billing operations
Full finance modules inside operational systems: invoicing and automated billing across varied rate cards, cost and income reporting, break-even and margin modelling, and projections built for people who have to defend the numbers.
Logistics & distribution
Live vehicle and delivery tracking, remote task assignment with driver notifications, electronic proof of delivery, automatic outstanding-stock reconciliation and delivery notes emailed on completion.
Workforce & time management
Clock-in and clock-out from any device, shift planning, automatic timesheets with no forms to fill, productivity scoring against your own targets, and attendance reporting managers will actually use.
Field service & maintenance
Job cards raised and dispatched online, engineers assigned and tracked, time against each job recorded, and clients kept in the loop without anyone chasing a phone call.
Facilities & compliance
Checklist-driven inspection rounds so managers can evidence that the right procedures were followed — the difference between a defensible record and an injury claim.
Education & student housing
Automatic room allocation, occupancy maximised through the intake cycle, billing across mixed rate structures, and student self-service that removes the repetitive queries from your staff.
Communications & messaging
Bulk SMS and WhatsApp delivery at scale with list management, scheduling and delivery reporting, integrated into the systems that need to send.
Consumer & mobile
Consumer-grade apps with the polish that implies: live location and geofencing, push notification, offline behaviour, and App Store and Play releases handled end to end.
Your industry not listed? That's the normal case rather than the exception — most of what we build is the first system of its kind for that business. Book a slot and tell us how your operation actually works.
Our own software
We run our own software in production.
Alongside client work we build and operate our own platforms — and running them changes how you build. You stop shipping things you wouldn't want to support at eight o'clock on a Friday, and you find out what a system is really like in year three rather than at handover.
Including a full CRM — with AI, finance and automation built in
Not a contact list with a pipeline bolted on. A complete platform: AI working through the sales data, a full finance module handling quoting, invoicing and reporting, and automation carrying the follow-ups, reminders and routine admin that otherwise eat a sales week. We built it because nothing off the shelf did all three, and we run our own business on it. The same three capabilities go into client systems — most operational software we build now has some combination of them inside it.
Built across every platform we sell
Web, native iOS and Android, and Windows services — the same range we bring to client projects, proven on software we depend on ourselves.
Supported the way yours would be
Live users, real data, real consequences when something breaks. It's the standard we hold client work to, because we've had to meet it ourselves.
AI receptionist
Never miss another call.
Most enquiries are lost before anyone reads them. The phone rings while you're on a job, out of hours, or already on another call — and that caller rings the next company on the list. Our AI receptionist answers every one, 24/7, takes the details, books the work straight into your calendar and follows up by text.
Answers every call, day or night
Natural conversation, multiple languages, several calls at once. It takes the address, the problem and the contact number, then transfers to a human when the call genuinely needs one.
Books the job while they're still on the line
Straight into your calendar against your real availability — Google Calendar, Outlook, Calendly — so the appointment exists before they hang up.
Handles texts and WhatsApp too
The same receptionist answers SMS and WhatsApp enquiries, sends post-call follow-ups, and remembers callers it has spoken to before.
Every conversation recorded and written up
Recordings, transcripts and summaries for each call, so nothing depends on someone remembering what was said or scribbling it on a pad.
Starter
Around 50 calls a month
£60 /month
100 minutes included · £0.60/min after
- 24/7 call answering
- Bookings into your calendar
- Recordings, transcripts & summaries
- Email and SMS notifications
- Setup, configuration and training
- Monthly management by us
Busy
Around 150 calls a month
£150 /month
300 minutes included · £0.50/min after
- Everything in Starter
- AI SMS & WhatsApp conversations
- Call routing and transfers
- Post-call follow-up
- Customer memory across calls
- Multilingual conversations
Always On
Around 300 calls a month
£240 /month
600 minutes included · £0.40/min after
- Everything in Busy
- Custom call workflows
- Integration with your own systems
- Priority support
- Quarterly review and retuning
- Named contact here
Everything in each plan
| Feature | Starter | Busy | Always On |
|---|---|---|---|
| Answering | |||
| 24/7 AI phone answering | ✓ | ✓ | ✓ |
| Answer several calls at once | ✓ | ✓ | ✓ |
| Included talk time | 100 min | 300 min | 600 min |
| Approximate calls a month | ~50 | ~150 | ~300 |
| Additional minutes | £0.60 | £0.50 | £0.40 |
| Keep your existing number | ✓ | ✓ | ✓ |
| Multilingual conversations | – | ✓ | ✓ |
| Bookings & routing | |||
| Books into your calendar | ✓ | ✓ | ✓ |
| Google Calendar, Outlook, Calendly | ✓ | ✓ | ✓ |
| Call routing & transfer to a human | – | ✓ | ✓ |
| Custom call workflows | – | – | ✓ |
| Messaging | |||
| Email & SMS notifications | ✓ | ✓ | ✓ |
| Post-call SMS follow-up | – | ✓ | ✓ |
| AI SMS conversations | – | ✓ | ✓ |
| WhatsApp conversations | – | ✓ | ✓ |
| Website messaging widget | – | ✓ | ✓ |
| Records & intelligence | |||
| Call recordings | ✓ | ✓ | ✓ |
| Transcripts & summaries | ✓ | ✓ | ✓ |
| Customer memory across calls | – | ✓ | ✓ |
| Integration with your own systems | – | – | ✓ |
| From us | |||
| Setup & configuration | ✓ | ✓ | ✓ |
| Monthly management | ✓ | ✓ | ✓ |
| Support | Priority | ||
| Quarterly review & retuning | – | – | ✓ |
| Named contact | – | – | ✓ |
| Monthly price | £60 | £150 | £240 |
Start free, set it up yourself. Sign up at voice.redplumm.com, write your greeting, add what the receptionist needs to know about your business, connect your calendar — Google Workspace, Microsoft 365, Outlook or Calendly — and test it before a single customer rings. Seven days free with 30 minutes of calls, no card needed. Every call, transcript and message is in your dashboard, and you can cancel from inside your account whenever you like.
Keep your existing number — calls divert across, so nobody has to learn a new one. Every plan includes setup, configuration against how your business actually works, and ongoing management, so there's nothing for you to run. Higher volumes, multiple sites or something bespoke: talk to us and we'll price it properly.
Redplumm Build
Build your own app. £15 per person, per month.
Not every problem needs a bespoke system. If what you actually need is a form your team fills in on a phone — a job card, a vehicle check, a delivery note — build it yourself in about five minutes. We host it, your team installs it, and it keeps working when the signal doesn't.
Pick a template, change the fields
Ten ready-made apps to start from — job cards, vehicle checks, safety inspections, proof of delivery, timesheets, incident reports. Drag to reorder, rename anything. No code and no training.
Installs on iPhone and Android
Your team opens the link and adds it to their home screen. Own icon, full screen, behaves like any other app — with no App Store download, no approval wait and nothing to update.
Works with no signal
The part that matters in a basement, a field or a lift shaft. Entries are saved on the device and send themselves the moment the phone is back in coverage — nothing lost, nothing typed twice.
Photos, signatures and GPS
Capture a photo of the damage, a customer signature at the door, and the exact location it was taken — all timestamped, all in the record.
Records you can actually use
Every submission lands in your dashboard the moment it arrives, with an email alert. Review, filter and export the lot to CSV whenever you need it.
Put it on your own website
Two lines of JavaScript embeds any of your forms straight into your own site, styled how you like. An API and keys let you pull records into whatever you already run.
Everything included
£15 per person / month
7 days free · no card to start · cancel any time
- Up to 20 apps
- 5,000 records per person, per month
- Ten starter templates
- Installs on iPhone and Android
- Offline capture with automatic sync
- Photos, signatures and GPS
- JavaScript SDK and REST API
- Email alert on every submission
- CSV export, your data exportable in full
Already with us? Sign in to your account
No sales call needed. Sign up, pick a template, and share the link with your team the same afternoon. Billing, seats, exports and cancellation are all in your own account — you never have to email us to change something.
Add and remove people whenever you like — your subscription adjusts the same day, so you only ever pay for the seats you're using. Billing starts automatically when the trial ends, through PayPal, and you can cancel from inside your account at any point. Need something a template can't do? Book a slot and we'll build it properly.
Accounts & payment
Everything in your own account.
Both products are self-serve from the moment you sign up. No sales process, no onboarding call unless you want one, and nothing you have to ask us to change on your behalf.
Seven days free
No card to start. Full access for the trial, and the countdown is visible in your account so nothing lands as a surprise.
Paid by PayPal
Checkout is handled entirely by PayPal — we never see or store your card details. Pay with a PayPal balance or any card PayPal accepts.
Cancel yourself, any time
One button inside your account. No notice period, no phone call, no retention conversation. Nothing further is taken.
Your data stays yours
Export everything to CSV whenever you want, including after you cancel. We don't hold your records hostage to keep you subscribed.
Priced per person
Redplumm Build is £15 per person per month. Add or remove people and your subscription adjusts the same day, so you only pay for the seats in use.
Invoices and VAT
Every payment is receipted through PayPal against Redplumm International Limited, registered in England & Wales.
Already a customer? Sign in to Redplumm Build or sign in to your AI receptionist.
Portfolio
Our work lives on its own site.
Rather than squeeze a portfolio into a strip of thumbnails here, we gave it a whole website, where every platform we build and run is documented properly — what it does, who it's for, and live access where it's available.
Our portfolio website
Our full portfolio. Real platforms with real users, each one written up in detail rather than reduced to a logo and a sentence — including the ones you can sign into and try yourself.
- Every platform, documented in full
- Live access where available
- Built and run entirely in-house
Opens in a new tab
How we work
You see something real before you commit.
No six-month reveal, no discovery invoice for a document nobody reads. We build a working proof of concept first, and we only talk commercials once you've used it.
We meet
A conversation with the people who'll actually use the system. We map how the work happens today, including the parts nobody has written down, and we're honest about whether software is the right answer at all.
Free. Book a slot below and we'll send a Google Meet invite.
We build a prototype
A working proof of concept of the core idea — not slides, not wireframes. Something you can click through, put in front of a colleague, and form a real opinion about before any long-term money is discussed.
Typically four to six weeks from the first meeting.
We agree commercials
Only once the prototype has proved the idea. Scope, monthly cost and term, set out plainly, with nothing hidden in a schedule at the back.
Monthly commitment, twelve or twenty-four months.
We build, and keep building
Regular releases you can test, with scope and progress visible throughout. As your business grows, the application grows with it — new modules, new users, new integrations, inside the same monthly arrangement.
Unlimited developer time. Fair use policy applies.
We support it properly
Maintenance and support are billed as part of the monthly commitment, not as a surprise afterwards. The people who built your system are the people who answer when you email.
Hosted with us, or on your own infrastructure.
Commercials
A partnership, not a project.
Fixed-price projects end the day they're delivered, and the software starts ageing that afternoon. We'd rather be on the hook for the next two years.
Monthly commitment
Twelve or twenty-four month terms, billed monthly. Predictable for your budget and long enough for us to build something that lasts rather than something that demos.
The application grows with you
New departments, new users, new integrations, new modules. As the business grows so does the software — that's the point of the arrangement, not a change request.
Maintenance and support included
Billed inside the monthly figure. Bug fixes, updates, security patching and the person on the other end of the email are all part of what you're paying for.
You own your data
Outright, with full exports and audit trails. Host with us or on your own infrastructure — the choice stays yours for the life of the agreement.
Unlimited developer time — fair use applies
You don't buy hours from us and you don't watch a clock. Within your monthly commitment, development capacity is unlimited under a fair use policy: sustained, sensible demand against an agreed roadmap. If you need a second team for a quarter we'll say so up front rather than quietly slipping the dates.
Where we are
A UK company, with reach.
Redplumm International Limited is registered and based in the United Kingdom, with a remote office in Johannesburg, South Africa. One team, one set of standards, and a working day long enough to cover both.
- Support hoursMon – Fri, 08:00 – 17:00 UK
- Remote officeJohannesburg, South Africa
Outside those hours, leave a message or book a slot and we'll come back to you.
Book a slot
Thirty minutes, no obligation.
Pick a time that suits you. We'll confirm by email and send a Google Meet invite for the slot.
What happens on the call
- You describe the process that's costing you time
- We ask about the awkward parts nobody documents
- We tell you honestly whether we're the right fit
- If we are, we scope a proof of concept
Slots are shown in UK time and adjust for BST automatically. Calls run 30 minutes. Prefer to write instead? info@redplumm.com. Visit our portfolio website.
Questions
The things people ask first.
How much does custom business software cost?
We work on a monthly commitment over twelve or twenty-four months rather than a single fixed price, because software that stops being developed starts ageing immediately. The monthly figure depends on scope and team size, and we only quote it after you've used the prototype — so you're agreeing to a number with real information rather than a guess. Maintenance, support and unlimited developer time under fair use are included in that figure.
What does "unlimited developer time" actually mean?
Within your monthly commitment you don't buy hours and you don't watch a clock. You bring us work against an agreed roadmap and we build it. The fair use policy exists so that sustained, sensible demand is covered and genuinely exceptional demand — a second team for a quarter, say — is discussed openly rather than quietly absorbed by slipping your dates.
Do we get a prototype before committing?
Yes, and that's the point. After the first meeting we build a working proof of concept of the core idea, typically within four to six weeks. You click through it and form a real opinion. Only then do we discuss commercials.
Do we own the code and the data?
You own your data outright, with full exports and audit trails, for the life of the agreement and after it. Code ownership is set out in the contract — we're happy for it to transfer to you, and most clients prefer we retain and maintain it as part of the monthly arrangement.
Can you integrate with the systems we already use?
Usually. Most of our work involves connecting a new system to accounting, payroll, stock or third-party services already in place. Where a documented API exists we integrate with it; where one doesn't, we build the bridge.
Do you build native iOS and Android apps, or cross-platform?
Both. Native in Swift and Kotlin where performance, offline behaviour or device hardware matter, cross-platform where a shared codebase is the better trade. We recommend one or the other during discovery rather than defaulting to whichever we happen to like.
Can you host the system, or does it run on our servers?
Either. We host and maintain platforms for clients, or we install on your own infrastructure. Vanta, for instance, is designed to be self-hosted so monitoring data never leaves your network.
Do I have to speak to someone to get started?
No. Both Redplumm Build and the AI receptionist are self-serve — sign up, get seven days free with no card, and configure everything yourself. Billing, seats, exports and cancellation all live in your own account. Book a slot if you'd like a walkthrough, but nothing waits on us.
How does payment work, and can I cancel?
Payment is handled entirely by PayPal, so we never see or store your card details — you can pay with a PayPal balance or any card PayPal accepts. Billing starts when the trial ends and you cancel with one button inside your account. No notice period and nothing further is taken. You keep full CSV export of your data either way.
What is Redplumm Build, and what does it cost?
A self-serve builder for small operational apps — job cards, vehicle checks, safety inspections, delivery notes, timesheets. You pick a template, change the fields, and share a link your team installs on iPhone or Android straight from the browser — no App Store needed. It captures photos, signatures and GPS, and keeps working with no signal. £15 per person per month after a 7-day free trial, with no card needed to start.
How much does an AI receptionist cost?
Plans start at £60 a month for around 50 calls, £150 for around 150, and £240 for around 300, with per-minute rates beyond the included allowance. Every plan covers setup, configuration against how your business actually runs, and ongoing management — there is no separate setup fee and nothing for you to administer. Higher volumes are quoted individually.
Can I keep my existing phone number?
Yes. Calls divert to the AI receptionist using conditional call forwarding, so your customers carry on ringing the number they already have. You can set it to answer only when you don't, only out of hours, or always.
Where can I see examples of your work?
Our full portfolio lives on its own website. Every platform we build and operate is written up there in detail — what it does, who it's for, and live access where it's available. Client systems are confidential and aren't listed publicly, but we'll walk you through any of them on a call.
Do you work with clients outside the UK?
Yes. We're a UK company and contract under UK law, with a remote office in Johannesburg, South Africa extending the working day. We deliver remotely for clients wherever they are.