Custom Software Built for Your Business
We design and build custom business software for South African companies: stock and invoicing systems, quoting and booking tools, client portals and the links between the tools you already use. Scoped and priced before we start.
“…they’re currently working on an automated stock management and invoicing system tailored specifically to our business.”
Built around how your business works.
- We learn how your business runs before we propose anything.
- We agree a fixed scope and price before any work starts.
- We document everything, so you're never tied to us.
Built around Stone Library’s own rules.
Tiles & Squares follows the way Stone Library already worked: stone priced in the units it’s sold in, their own paperwork, commission on profit and their payroll. It’s how we’d build yours.
- Quotes in their units, with gross profit on every line
- Commission on profit, earned once a job is done
- Discount limits for every role, set by the owner
- Payslips with the PAYE worked out step by step
Tell us what you need.
Tell us what you want to build, or the problem you want gone. We'll come back with a scope, a price and a timeline, or tell you plainly if it isn't a fit.
Hi Clevex, I'm interested in custom software development. Can you help?
Get a free quote
Thanks, we’ve got it.
One of us will WhatsApp you within 2 working hours (every day, 08:00–17:00).
How it works
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Tell us what you need
WhatsApp us or fill in the quote form. Tell us about your business and what it needs.
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We do our homework
We study how your business works. Then we send a fixed quote. If a smaller build will do, we say so.
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We build in stages
You see it working at every stage and tell us what to change. The timeline is in your quote.
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Launch and hand-over
We go live and hand everything over. If you want us to keep looking after it, we quote that separately.
What we build
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Stock & Invoicing Systems
Stock levels, orders and invoices in one place, worked out automatically instead of in spreadsheets: the kind of system we built for Stone Library.
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Quoting & Job Tools
Quotes built in minutes from your own prices and terms, sent as a link the client can accept and pay, and tracked until the job is done.
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Bookings & Scheduling
Bookings, availability and reminders that fit the way your business runs, taken on your website instead of over the phone.
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Client Portals & Member Areas
Secure logins where your clients see their documents, orders or progress, without emails going back and forth.
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Payments & Connections
Card payments and subscriptions through Paystack, and links to the tools you already use, such as your accounting, email and WhatsApp alerts, so information moves by itself instead of being re-typed.
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Maintenance & Support
Updates and improvements after launch, quoted first.
What is custom business software?
Custom business software, or bespoke software, is a system designed and built around how one business works, instead of bending the business to fit an off-the-shelf product. It's the right choice when your process is part of what makes you good, when the standard tools don't quite fit, or when you're paying for five subscriptions that should be one system and typing the same information into each of them.
As a software development company, Clevex builds bespoke business software for South African companies, alongside the websites that are most of our work: stock management and invoicing, quoting and job tools, bookings, secure client areas, internal dashboards and the automation that connects them to your website, your payments and your email. For Stone Library, a stone supplier in Randburg, we built Tiles & Squares: the system that runs their yard, from stock and quotes to tax invoices, commission and payroll.
For businesses in Pretoria and around Hartbeespoort, we're close enough to sit down with your team and watch how the work gets done before we design anything, which is the best way to scope a system. Everywhere else in South Africa, the same work runs over video and WhatsApp.
We run our own business on software we wrote: our quotes, card payments and monthly subscriptions through Paystack, and our client onboarding. Our free website check is a small web app anyone can try. When we commit to a build, you get a fixed scope, a realistic timeline in writing and a system that's documented, so you're never locked in to us.
Common questions.
What kind of business software can you build?
Most of what we're asked for falls into a few kinds: stock management and invoicing, quoting and job tracking, bookings and scheduling, client portals with logins, internal dashboards, and the connections that move information between your website, payments, email and other tools. If your team does the same task by hand every day, or keeps the same information in several places, it can usually be built into one system.
Should I use off-the-shelf software or have it custom built?
Use off-the-shelf software when a standard product fits the way you work: it's cheaper to start and someone else maintains it. Go custom when you're paying for several subscriptions that don't talk to each other, re-typing the same information, or bending your process around a tool that doesn't fit. We'll tell you which makes sense, even if the answer is a product that already exists.
How much does custom software cost in South Africa?
It depends on scope. Most custom builds start in the tens of thousands of rand. After a short conversation about what you need, we give you a fixed scope and price, not an hourly rate. Our website price guide lists typical South African price ranges.
How long does a custom software project take?
A focused tool or a first version can be ready in 4–8 weeks. Larger systems take a few months. We work in stages, so you see progress every couple of weeks.
Can the software work with my website?
Yes. That's often where it starts: quote requests, bookings, orders or payments taken on your website go straight into your system, with nothing copied across by hand. If we build your website too, the two are designed together.
Do you work with businesses anywhere in South Africa?
Yes. Most of the work happens over WhatsApp, calls and video, with in-person sessions where they help, so it doesn't matter where in South Africa you're based.
Will I own what you build?
Yes. You own the software and the rights to it. We hand over something documented and easy to maintain, so you're never tied to us.
Can you take over or fix existing software?
Often, yes. We can review your existing software, fix what's broken, and either look after it or plan a rebuild. We'll tell you which makes more sense.

