You need custom software. Three doors stand open: hire freelancers, sign an agency retainer, or work with a product factory. They look similar on a quote. They behave nothing alike once the build starts.
The one-paragraph version
Freelancers sell hours. Agencies sell teams. A product factory sells shipped increments: a fixed scope, a weekly demo, and a handover your team can run. If you want an owned product on a readable timeline, the factory model wins. If you need twenty hands inside an existing enterprise machine, the agency wins. If the task fits in one sentence and one week, hire the freelancer.
Side-by-side comparison
| Product factory | Classic agency | Freelancers | |
|---|---|---|---|
| You buy | Fixed-scope increments | Team capacity | Individual hours |
| Scope control | Acceptance criteria before build | Change orders | Whatever fits the week |
| Demo rhythm | Weekly, live | Sprint reviews, sometimes | When you ask |
| Who owns decisions | One accountable lead | Account manager + tech lead | You do |
| Seniority | Senior-only | Mixed bench | One person, varies |
| Knowledge after exit | Playbooks, docs, repo | Often walks out | Walks out |
| IP transfer | On payment, standard | Negotiable | Must be contracted |
| Best for | MVPs, owned products, modernization phases | Enterprise programs, staff gaps | Narrow supervised tasks |
| Biggest risk | Needs a definiable scope | Open-ended billing | No continuity |
Why fixed scope beats open-ended billing
Open-ended billing rewards duration, not delivery. Every extra week is revenue for the vendor and runway burned for you. A fixed scope flips the incentive: the vendor profits by shipping well and fast, and the acceptance criteria in writing protect both sides. That is the whole trick behind the factory model. AI acceleration helps (drafts, tests, and docs cost less), but the contract shape matters more than the tooling.
What this costs in Germany
Use the German market bands as your anchor: agencies quote EUR 95-160 per senior hour, senior freelancers EUR 80-120. A focused MVP lands around EUR 30,000-120,000 depending on scope, integrations, and design depth. Run your own numbers in our cost calculator, then send a 2-minute project brief for a fixed quote with a reply in one business day.
The decision in 30 seconds
Can you describe the outcome in one page? Factory. Do you need bodies inside your process for a year? Agency. Is it one integration you could review yourself? Freelancer. When in doubt, start with the smallest fixed-scope slice and let the delivery quality decide the rest.
Frequently asked questions
What is a software product factory?
A product factory is a senior-only team that builds custom software in fixed, repeatable steps: scope, build, demo, handover. Unlike a classic agency it sells outcomes with fixed scopes and weekly demos instead of resumes and retainers. Unlike freelancers it keeps one accountable lead and documented decisions across the whole engagement.
Is a product factory cheaper than an agency?
Usually yes for defined builds, because fixed scopes and AI-accelerated routine work remove the two biggest cost drivers: open-ended hours and boilerplate billed at senior rates. Agencies win on large enterprise programs where you need many hands on existing processes, not a shipped product.
When should I still hire freelancers?
For narrow, well-specified tasks you can supervise daily: a single integration, a design polish pass, a code review. Freelancers fail on owned products because knowledge leaves with the person, and nobody owns the roadmap, the QA gates, or the 3am incident.