Decision guide
Software agency vs product studio
Both build software for you — the difference is what each one is when the project ends. A software agency is organised around delivering your project: a statement of work, a team assembled for it, a handover. A product studio is organised around products it builds and operates as its own: the same team that ships your system keeps running it, because operating software is the studio's business, not an after-sales service. Choose an agency for a defined deliverable; choose a studio when you need a product that keeps working — and improving — in production.
Updated · Sep 17, 2026
Head-to-head
| ZUI | a software agency | |
|---|---|---|
| What they sell | A working product, operated — shipping is the start of the relationship | A project against a statement of work — delivery is the finish line |
| The team | A standing team that has shipped its own products and stays on yours | A team assembled per project, reassigned when it ends |
| Incentive after launch | The studio's own reputation depends on your product staying up | Change requests become new quotes |
| Cost shape | Recurring fee tied to the product running, not hours billed | Budget per phase; scope creep bills separately |
| Best for | Operators who need software that keeps running without building an ops team | A bounded deliverable your own team will own afterwards |
Verdict
If what you need is a finished deliverable — a site, a fixed-scope build — an agency is the right shape. If the software has to run your operation and keep improving in production, a product studio wins on incentives: the same team that built it stays on the hook for it, because operating products is the studio's own business. That is the model ZUI runs — 8 products in production, built and operated as our own. See also our [software agency alternative](/en/compare/software-agency-alternative) and [build vs buy](/en/compare/build-vs-buy-custom-software) guides.
When to choose a software agency
A software agency is the right call for a bounded, well-specified project your own team will own: a marketing site, a migration, a feature for an existing system with clear endpoints. When the deliverable ends the relationship, the agency model fits — and its per-project billing is transparent for exactly that kind of work.
FAQ
What operators ask before they sign.
What is a product studio?
A company that conceives, builds and operates software products as its own craft — usually its own products and, on occasion, products for partners. The defining trait isn't the tech stack; it's that shipping is followed by operating: the studio stays accountable for the product working in production, the way a SaaS vendor is accountable for its own product.
Is a product studio more expensive than a software agency?
Not necessarily — the bills have different shapes. An agency bills per project or per hour, so the sticker is per deliverable and every post-launch change is a new quote. A studio bills for the product running: a recurring fee that already includes operating, monitoring and improvements. Per project, agency pricing can come out lower; over the life of an operated product, the studio model avoids the handover cost that agency quotes don't include — and that an in-house team costs around €169,000/year in real employer cost in Spain. For the full Spain cost ladder — agency bands, freelance day rates, maintenance — see our [custom software cost breakdown](/en/blog/cuanto-cuesta-software-a-medida).
When should I choose an agency instead of a studio?
When the work has a clear finish line your team will own: a website, a fixed-scope integration, a migration with defined endpoints. If there's no operation that must keep running after delivery, a project relationship is the honest fit — and you shouldn't pay for operating capacity you won't use.
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