// Guide · 6 min read
Custom software or off-the-shelf? How to decide
A practical way to decide between buying SaaS and building a custom app: where each wins, the hidden costs, and the questions to ask first.
By Simple To Work ·
Most businesses should buy software first. Payroll, email, accounting and chat are solved problems, and someone else maintains them for you. Custom software earns its place in a narrower set of cases, and knowing which case you are in saves a lot of money in both directions.
When off-the-shelf is the right call
- The process is the same in every company, like payroll, email or e-signature.
- You can change how you work to fit the tool without losing anything that makes you different.
- A handful of people use it, so per-user pricing stays small.
- The vendor is established and the tool is a core part of what they sell.
When custom software pays for itself
- The work is what makes you different. If your pricing, scheduling or fulfillment is the reason customers choose you, forcing it into a generic tool removes the advantage.
- You are paying for three tools that each do a third of the job. The glue between them (exports, spreadsheets, copy-paste) is where the hours and the mistakes go.
- Per-user fees have grown with your team. Fifty technicians at a per-seat price every month adds up to the cost of a custom build within a few years.
- Customers need to do something themselves. Portals for ordering, booking or uploading documents are often specific to how you work.
- The data needs to come together. When answers live across an ERP, a storefront and a warehouse system, a custom integration is often the only way to get one trustworthy number.
The costs people forget
Off-the-shelf has hidden costs: workarounds, the spreadsheets that grow around the tool, price increases at renewal, and features you pay for but never use. Custom has its own: hosting, maintenance, security updates and the time your team spends explaining how the work is done. Compare both over three years, not just the first invoice.
A middle path
You rarely have to choose all or nothing. A common pattern is to keep the standard tools (accounting, email, payments) and build a thin custom layer where your business is different: a portal on top of your ERP, a field app that writes into your accounting system, or a dashboard that combines data from everything else.
Questions to ask before you decide
- Which part of this process do customers actually notice?
- How many hours a week go into exporting, re-entering or reconciling data?
- What will the per-user cost be when the team is twice the size?
- If the tool raised its price by half next year, what would we do?
- Who will own and maintain a custom app after launch?
If most of the answers point to standard work, buy. If they point to the work that makes you different, a small custom build usually beats a big subscription.
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