What is the difference between custom and off-the-shelf software?
Off-the-shelf software is built for many companies at once. Think of accounting software, a CRM or an e-commerce platform. You usually pay per user per month, and the vendor takes care of updates and security. You adapt the way you work to the package.
Custom software is built for one company. It does what your process needs, with your screens, rules and integrations. You pay for the build, and after that for maintenance and further development. The software adapts to you, not the other way around.
When is off-the-shelf the best choice?
A package is often the smartest choice when:
- your process is common, such as bookkeeping, payroll or a simple web shop;
- a package covers most of it, and settings handle the rest;
- you want to start quickly and have little time to work out requirements;
- rules change often and the vendor keeps up with them, as with payroll.
Rebuilding something that already exists and works well is rarely wise. If a package fits, we will tell you.
When does custom software pay off?
Custom software pays off when:
- your process is your edge: the way you plan, deliver or advise is exactly why customers choose you;
- your team works around the package, with exports to Excel, double data entry and paper lists;
- you use several packages that do not talk to each other;
- your system is outdated and the vendor no longer develops it;
- you want to sell your own product or platform, with a separate environment per customer.
A rule of thumb: if staff retype or export the same data every day, you are already paying for custom software. You are just paying in hours instead of in software.
What does it really cost over five years?
Do not compare the starting price alone. A package looks cheap, but the cost grows with the number of users. Also count extra modules, price increases and the hours of manual work around the package.
With custom software, most of the cost comes at the start. After that you pay for hosting, maintenance and extensions. There are no per-user licences, so growth costs less extra.
For both, look at lock-in too. Can you export all your data if you want to switch? With custom software, agree upfront that the code and the data are yours, and have it built with widely used technology. That way another party can take over later. And check where your data is stored: hosting in the EU makes GDPR compliance simpler.
How do you make the choice?
It is rarely all or nothing. Many small and mid-sized companies keep their accounting package and have something built around it: a planning screen, a customer portal or an integration that passes data on automatically. That way you only pay for custom work on the part that sets you apart.
Ask yourself these five questions:
- 01Which part of our process do we do differently from competitors?
- 02How many hours a week go into retyping, exporting and checking data?
- 03How many users will we have in three years?
- 04Can we take all our data with us if we switch?
- 05Who maintains the software if the vendor or developer drops out?
If the answers to questions 1 and 2 are "not much", a package is usually enough. If they are "a lot", custom software is worth exploring.
In summary
- Off-the-shelf suits common processes and a quick start; you adapt your way of working to the package.
- Custom software pays off when your process sets you apart, when you lose many hours on workarounds, or when you want to sell software yourself.
- Calculate both over five years, and make sure your data (and with custom software, the code too) belongs to you.
Frequently asked questions
At the start, usually yes. Over several years that can turn around, especially with many users or a lot of manual work around a package. Compare both over five years using the same cost items.
The first working version is usually ready within a few weeks. After that the software grows step by step, with a fixed price per step.
Almost always. Through an integration, systems exchange data automatically, so nobody has to retype anything.