Guide · 7 minutes
Custom software or SaaS: how to choose without paying twice
A good subscription is often the best first choice. Building your own becomes justified when the product's limits start costing more than they save.
Updated
When a SaaS product is the right choice
Choose an existing product if your process is common, the team is small and you want to start quickly. Invoicing, simple scheduling, newsletters and task management all have mature solutions. For a company at the beginning, the time saved is worth more than complete control.
A SaaS product includes hosting, updates and support. You can test the process before investing in development and find out what the team actually uses, rather than what they thought they would use.
The signs that an off-the-shelf product has become a limit
- The same data gets copied daily between applications or into spreadsheets.
- People skip steps because the product's flow does not match their work.
- You pay for many seats or modules but use only a small part of them.
- You cannot automate a rule that differentiates your company from its competitors.
- The important reports get rebuilt by hand every time.
- Access to your data and integration depend on a higher plan or on limits you cannot control.
The real advantages of custom software
The main advantage is not that you can change any colour. It is that the application's rules can follow the process that creates value in your company. Roles, approvals, calculations and exceptions can be designed around the people who use them.
Control over the code and the data reduces supplier dependence. That only counts if you receive the repository, the documentation, the infrastructure access and the contractual rights. Without them, a custom application can create a deeper dependence than a subscription.
The costs a simple comparison hides
On the SaaS side, add up the subscriptions, the extra modules, the integrations, the time spent on manual entry and the cost of changing your process. On the custom side, add up the analysis, the build, the infrastructure, the maintenance and the person who will decide priorities.
Compare over the same period and include the cost of a future change. Do not assume your own software stops requiring investment after launch; operating systems, APIs and security requirements keep changing.
The hybrid option is often the best one
You do not have to replace everything. You can keep the accounting system, the payment processor or the email platform and build only the layer that ties them together. An internal application can become the single place people work in, while the specialised services stay behind it.
A well-chosen integration sometimes solves the problem faster than a new product. Start with the bottleneck that costs the most hours and measure whether automating it removes them.