Custom Software Development for SMBs | Intway
Servicios / Custom Software for Small and Medium Businesses

Custom software for businesses that outgrew their spreadsheets

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Systems built around how your business actually works, not the other way around. Two-week releases, fixed scope per phase, and the code stays yours.

25+ years of experience500+ projects deliveredFirst release in 4-6 weeksCloud or on-premise

What custom software for an SMB really is (and is not)

Custom software is a system built around the way you work: your statuses, your pricing rules, your approval flows, your forms, your vocabulary. It is not a generic product where you switch features off until it vaguely resembles your operation. It is the exact opposite.

For a small or medium business this matters more than for a corporation. SMBs compete by doing something different: a special configuration, a shorter lead time, closer service. That edge almost never fits inside an off-the-shelf product, and when the company adapts to the software instead of the reverse, the first thing lost is precisely what made it worth choosing.

It is also not a two-year program or an enterprise budget. A good custom project for an SMB starts small, solves one specific bottleneck, and pays for itself with the hours it frees up.

From scattered spreadsheets to a unified custom management system for a small business
The real shiftSpreadsheets do not disappear by decree: they get replaced one process at a time.

The starting point is almost always the same: the spreadsheet. And spreadsheets are not free. The review of field audits on operational spreadsheets published by Raymond Panko (University of Hawaii) found errors in more than 86% of those audited. When that spreadsheet drives pricing, inventory or collections, every error has a cost.

When it makes sense

It does not always make sense, and saying so is part of the job. These are the signals that the moment has arrived:

  • There are three or four business-critical spreadsheets only one person knows how to maintain.
  • The same data gets entered two or three times into systems that do not talk to each other.
  • The product you bought covers 70% and the remaining 30% is handled by hand, over email or chat.
  • Asking for a report means waiting two days for someone to build it.
  • Growth is limited by administrative capacity, not by lack of sales.
  • The current system is old, whoever built it is long gone, and nobody dares to touch it.

When it does not

If the process is standard (accounting, payroll, plain invoicing) an existing product, properly integrated, almost always wins. The healthy answer is usually hybrid: a product for what does not differentiate you, custom development for what does.

Not sure whether you actually need custom software? In a 30-minute call we review your operation and tell you whether to build, integrate what you already have, or buy an existing product. If the answer is buy, we say so. Get in touch and let us look at it together.

Custom software, SaaS or ERP: what fits which need

The honest comparison is not custom versus ERP: it is which need you are solving. SAP, Odoo or any local accounting suite handle very well what is identical across every company. The problem shows up in whatever is specific to yours.

NeedSaaS or ERP productCustom software
Accounting, payroll, statutory invoicingExcellentUnnecessary
Processes unique to your businessLimited: ends in parallel spreadsheetsExcellent
Integration with other systemsDepends on the vendor APITotal: defined at design time
Changes when the business changesSubject to the vendor roadmapYour priority, in weeks
Time to go liveFast if the process fitsPhased, the first one in weeks
Cost over timePer-user licences plus customizationsInitial investment plus evolution
Ownership of code and dataThe vendorYours

In practice almost no SMB sits at either extreme. The most common and healthiest answer is a mix: a standard product for accounting and tax, custom development for the operation that differentiates you, and both connected through APIs. We go deeper in custom software vs SaaS.

Data flow diagram for a small business from spreadsheets to the custom system, API, ERP, invoicing and dashboard
The path of the dataEntered once, it travels on its own all the way to the dashboard: that is the whole project, summarized.

How we approach it

We use modular architecture from day one, even on small projects. Each module (sales, inventory, production, collections) is deployed and tested separately and talks to the rest through APIs. That lets you go live with one part of the system while everything else keeps running as it does today, without interrupting operations or asking anyone to learn everything at once. If you also sell online, that same modular approach is what drives our e-commerce and marketplace integrations.

Modular architecture of a custom SMB system with independent modules and API integrations
Reference architectureIndependent modules, one governed database, and connectors to invoicing, banking and your online store.

Start with the bottleneck, not the org chart

The first module is not chosen by hierarchy but by pain: the process that burns the most hours or produces the most errors. If the first release does not give real time back to a specific person within weeks, the project started off wrong and it is worth revisiting before going further.

Order-to-cash cycle integrated into a custom management system for a small business
Order to cashEvery arrow crossed by hand today is an hour recovered and an error that stops happening.

Short releases and scope locked per phase

The study McKinsey ran with the BT Centre for Major Programme Management at the University of Oxford, covering more than 5,400 IT projects, found that large ones end up 45% over budget and deliver 56% less value than predicted. The practical conclusion for an SMB is not to panic: it is not to run large projects.

That is why every two weeks there is something working that you can see, click and use, and scope is locked per phase instead of in one twelve-month contract. You can pause, reprioritize or add a new module without renegotiating the whole project.

Phased delivery plan for a custom software project in a small business
Phased deliveryFrom the first module in production to continuous evolution, with no big bang.

Real cases

No names, because these are client operations.

CompanyStarting pointWhat we builtResult
Logistics operatorSeven parallel spreadsheets and four people entering orders by handCustom order system integrated with electronic invoicing and the Mercado Libre marketplace85% less administrative time
Manufacturing companyOutdated inventory and production planned outside the systemOnline inventory and production orders integrated into the sales cycleReal-time stock and production visible in the same system, with no manual counts

How much does custom software cost?

The honest answer is that it depends, but it depends on concrete, measurable things:

  • The scope of the first module. How many processes go into phase one and how tightly coupled they are.
  • The integrations. Every external system adds work: e-invoicing, ERP or accounting, banking, marketplaces, carriers.
  • Users and profiles. Not because of licences, but because of permission and screen complexity.
  • Data migration. How many years of history need to come across and in what shape they are.
  • Infrastructure. Cloud or on-premise, and what level of availability the operation needs.

We do not quote the whole system. We quote the first phase with locked scope and price, after a one or two week diagnosis, and that first module is usually in production within 4 to 6 weeks. Everything after that is quoted phase by phase, using what the previous one taught us: nobody has to sign today for what will only be understood six months from now.

The number that matters is not the price but how many monthly hours it gives back. When four people spend half a day entering data the system can capture on its own, or when building a quote takes twenty minutes and becomes a matter of seconds, the math closes in months rather than years. Tell us which process you want to solve and we will put a number on your case after the diagnosis.

Examples by industry

Logistics and distribution

Route sheets, digital delivery notes, shipment tracking and freight reconciliation. The order is entered once and travels all the way to invoicing with no retyping. We have a dedicated pillar on software for logistics and transportation with the full cycle.

Manufacturing and production

Production orders, raw material control, batch traceability and real cost per product. The typical case is the plant that knows how much it sold but not how much it cost to produce until month-end close.

Wholesale and retail

Price lists per channel, promotions, stock per location and customer accounts. This is where integration with the online store and marketplaces pays off fastest.

Healthcare

Appointments, medical records, insurers and service billing, with the data protection requirements the sector demands. We cover it in healthcare software.

Construction and field services

Progress certifications, daily reports, subcontractor control and cost per site. Data is captured from a phone on location, with no signal, and syncs on the way back.

Agribusiness

Seasons, plots, applications, storage and settlements. A sector where data is born in the field and the system has to go and get it there, not wait for it at the office.

Common (and expensive) mistakes

  • Trying to fit everything into version 1. Unlimited scope is the number one reason projects never ship. Define a minimum that is useful on its own, and release it.
  • Digitizing the mess. Automating a badly designed process only makes the error spread faster. Clean up the workflow before writing code.
  • Underestimating data migration. Years of history stored in spreadsheets are the most valuable asset in the project and almost always the worst estimated task.
  • Leaving out the people who will use it. A system designed only by management gets bypassed with parallel spreadsheets within three months.
  • Having no exit plan. Code, database, documentation and access must be in your name from day one, not at the end.

Questions we get before kickoff

What technologies do you use?

Backend in .NET, Java or Node.js; frontend in React or Angular; databases in SQL Server, PostgreSQL, MySQL or Oracle; mobile in React Native. The choice is driven by your context, not our preference: if your internal team already knows a stack, that stack has the advantage.

Can it integrate with SAP or another corporate ERP?

Yes. We integrate through APIs, web services or scheduled file exchange depending on what each version exposes. What we settle up front is who owns each piece of data, so there are never two conflicting versions of the truth.

What you own when it is done

The system in production, the source code and infrastructure under your accounts, functional and technical documentation, and a team available to keep evolving it. If you want to build internal capacity, we do it through our software factory and team augmentation model. If what you have today is an old system that cannot be switched off overnight, the right path is progressive modernization, not a full rewrite. And once your data finally lives in one governed place, that is when it makes sense to talk about AI on your own data.

Across 25 years and more than 500 projects we learned something simple: SMBs do not need more software, they need less manual work. Everything else follows from that.

Intway
Custom software for SMEs

YOUR BUSINESS GROWS.
YOUR SOFTWARE SHOULD TOO.

Software built around how your SME actually works — no licenses you don't use, no generic templates. We design and build exactly what your operation needs.

Built for your process

We map how your team works today and build the system around it, not the other way around.

Grows with you

Modular architecture: start with the essentials, add features as the business demands them.

Costs stay in check

No per-user fees, no unused modules. You pay for development, not endless licensing.

0years of track record
0SMEs with their own systems
0custom-built, zero templates
Tell us about your project

Detalles

Custom management system for a small business with sales, inventory and collections modules

Custom management system

The operational core of the company, using your workflows and your wording.

Ver más →
Self-service web portal for customers and suppliers of a small business

Customer and supplier portal

Self-service, so they stop asking for everything by email and phone.

Ver más →
Process automation and automatic document generation in a small business

Process and document automation

Everything repetitive that is done by hand today, done on its own.

Ver más →
API integrations between a custom SMB system and its external platforms

Integrations with what you already use

E-invoicing, ERP, banks, e-commerce and marketplaces.

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Mobile app for small business field teams with order capture and offline sync

Mobile app for field teams

Sales reps, technicians and drivers capturing data on the spot.

Ver más →
What we solve

The four bottlenecks we see most

The four problems we hear most from businesses that outgrew their tools.

Spreadsheets at their limit

Critical data in files only one person understands, with published audits finding errors in more than 86% of operational spreadsheets. We move it into a system with users, permissions, history and backups.

Systems that do not talk

Invoicing on one side, inventory on another, the online store somewhere else. We connect them through APIs so data is entered once and travels on its own.

Manual work that eats hours

A quote that takes twenty minutes today gets generated in seconds. Multiplied by daily volume, that is full working days returned to the team every month.

How we work

From the first call to a running system

1

On-site diagnosis

One or two weeks observing how you work today, which spreadsheets circulate and how many monthly hours each task consumes. We come out with a process map and a measured bottleneck.

2

Proposal with scope locked per phase

We define what goes into the first release and what comes later. No open-ended contracts, no vague scope.

3

Development with two-week releases

Every two weeks there is something working that you can use. We adjust with your team on the real system, not on documents.

4

Go-live, support and evolution

Data migration, training and a supported rollout. After that, a continuous improvement plan at the pace the business needs.

500+
Projects delivered
25+
Years of experience
4-6
Weeks to first release
98%
Client retention
FAQ
How much does custom software for an SMB cost?

It depends on scope, and five things define that scope: how many processes go into the first module, how many integrations are involved, how many user profiles exist, how many years of data must be migrated, and whether it runs in the cloud or on-premise. That is why we do not quote the whole system but the first phase, with locked scope and price, after a one or two week diagnosis. Get in touch and we will estimate it on your case.

How long does it take to develop custom software?

The first production release is usually between 4 and 6 weeks from kickoff. It is not the full system: it is the module that solves the main bottleneck. From there, releases come every two weeks, and a complete management system for an SMB typically rolls out over 6 to 12 months with parts running from the start.

What is the difference between an ERP and custom software?

An ERP is a finished product that standardizes processes common to every company: accounting, purchasing, payroll, invoicing. Custom software is built around the processes specific to your business that no product ships with. The practical difference appears when something does not fit: in an ERP it becomes an expensive customization or a parallel spreadsheet, while in custom development it is just one more item in the next release. Most SMBs end up with both, connected through APIs.

Can we migrate the information we have in Excel?

Yes, and it is a formal project phase with its own allocated time. Data is cleaned, normalized, validated against the original spreadsheet and only then loaded. It is the most underestimated task in any project and also the one that preserves the most value, because that history is an asset you already own.

Do we own the code and the data?

Yes. Source code, database, repositories, documentation and infrastructure access are in your company name from day one. If you stop working with us tomorrow, the system keeps running and any team can take it over, because we use standard market technologies.

What does maintenance look like after go-live?

A monthly agreement covering fixes, security updates and a pool of hours for improvements. It is not mandatory: since the system is in your name, you can maintain it with your own team or another provider whenever you want.

Tell us which process is slowing you down

A 30-minute conversation is enough to know whether you need custom development, an existing product, or simply to integrate what you already have.

Book a meeting