Every company faces the build vs. buy question. Most teams guess. A few make spreadsheets. Almost nobody does it right. This calculator models the real TCO over the term of your agreement — license costs, implementation, engineering headcount, AI-assisted build velocity, app criticality, and more. Adjust the parameters, see the numbers update in real time, and get a clear recommendation. Free to use.
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Maker
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Hey Product Hunt! 👋
I'm Chris — founder of Differential Factor, an AI-powered market intelligence firm. I built this tool because I kept seeing the same thing in enterprise strategy conversations: companies signing SaaS renewals without ever doing the math on what it would actually cost to build the capability themselves.
The AI coding tools have completely changed the build side of that equation. What used to take 6 engineers and 18 months can now be modeled very differently. This calculator accounts for that — you can set your AI tool stack, build velocity, and engineering headcount to get a realistic TCO comparison over the full term of your agreement.
A few things I'd love your feedback on:
* Does the output feel trustworthy and actionable, or does it need more explanation?
* What parameters are we missing?
* Is the report useful, or is it too much friction?
Try it at bvb.differentialfactor.com — and if you find it useful, share it with whoever owns your next vendor renewal. That's exactly who it's built for.