Make software vendors
prove it.
ProofBuyer actually tests software against your requirements—so you can buy with evidence, not marketing claims.
The buying process is optimized for the seller.
Demos show the happy path. Comparison pages collapse plan limits into checkmarks. Trials become unstructured clicking. By the time a hidden gap appears, the team has already invested political and technical capital.
Shows what works best—not what matters most to you.
A ✓ rarely explains plan limits, setup effort, or workarounds.
Each product gets tested differently, so the final ranking is memory + vibes.
A repeatable buying benchmark in four moves.
Define the buying outcome
Turn a brief, budget, and team context into explicit weighted requirements.
Build one benchmark
Convert each requirement into an acceptance test shared by every candidate.
Run and collect evidence
Operate the software, capture outcomes, timestamps, setup effort, and evidence.
Decide with receipts
Score deterministically, surface contradictions, and generate a procurement-ready report.
Every score should be able to answer “why?”
ProofBuyer keeps the observable artifact attached to the outcome: what was tested, what happened, when it happened, how long setup took, which benchmark version applied, and how confident the verification is.
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Marketing claim in. Observed outcome out.
The point is not to “catch” vendors. It is to preserve the difference between what was promised, what plan was tested, and what the buyer actually observed.
“Set up in minutes.”
27 minutes
to reach the full requested workflow in the controlled benchmark.
The decision changes. The evidence shouldn’t disappear.
Mid-run steering versions the evaluation instead of restarting history. Add a must-have, tighten what “native” means, or change the buying rule while the benchmark is running.
Software cost is more than the invoice.
A wrong tool creates migration cost, onboarding drag, workflow compromises, renewal leverage loss, and another buying process. ProofBuyer’s job is to make those risks visible before commitment.
The obvious cost.
Migration, training, broken workflows, procurement rework.
A small verification cost before the large commitment.
Then reuse the benchmark at renewal.
One evidence layer, different buying roles.
“I need to know which tool will actually work for our workflow.”
“I need a repeatable rationale and an audit trail behind the recommendation.”
“I need to buy quickly without spending three weeks becoming a category expert.”
The recommendation is not the product. The proof is.
A numeric score traces to requirement × weight × outcome × evidence. The model does not invent a vibe score.
A hard requirement can disqualify a candidate even when its average score is high.
Changing the decision creates history instead of rewriting it.
The business model cannot be allowed to corrupt the evidence model.
ProofBuyer stores concise outcome explanations—not hidden model chain-of-thought.
Pay for better decisions, not placement.
Launch pricing is directional while we learn from early buyers. Vendor-sponsored rankings will not be part of the model.
Structure the decision before a vendor demo structures it for you.
A focused, hands-on benchmark for one software purchase.
A shared buying memory for teams making software decisions repeatedly.
Controls and auditability for structured software purchasing.
The questions trust depends on.
Does ProofBuyer just summarize vendor websites?
No. The core product is an evidence-backed benchmark: requirements become acceptance tests, candidates are run against the same standard, and every score traces back to an observed outcome.
Can a vendor pay to rank higher?
No. Trust is the product. ProofBuyer does not sell sponsored ranking and vendor payments cannot change scoring or recommendation logic.
What is the Product Hunt demo actually testing?
The launch build uses three clearly labeled fictional CRM products that ProofBuyer can operate deterministically. That lets the full evidence, steering, scoring, and reporting loop be demonstrated without making claims about real vendors.
Is GPT-6 Astra running in the public demo?
Only if a valid server-side integration is explicitly configured. The current controlled mode is clearly labeled and never represents deterministic demo behavior as a live Astra execution.
What happens when requirements change mid-evaluation?
ProofBuyer versions the decision, preserves existing evidence, applies the new rule to the benchmark, recalculates affected scores, and continues the run with an audit trail.
Will this replace procurement teams?
The aim is to give buyers and procurement teams better evidence, repeatability, and renewal memory—not to remove commercial judgment, security review, or contract negotiation.
Don’t compare software.
Make it prove itself.
Bring the software decision you’re already making. ProofBuyer will turn it into a benchmark you can defend.
Start a free evaluation