IdeaSignal vs Preuve.ai
Two source-backed validators. The difference is what happens after the score.
Preuve.ai is the most direct comparison to IdeaSignal we've found, and it's a genuinely good tool. It runs a fast scan across live sources, produces a viability score with a competitor map and market sizing, and — importantly — links its claims to sources. So the usual knock on validators, “it's just a vague score,” doesn't apply to Preuve any more than it applies to us. Both tools take evidence seriously.
Because the fundamentals overlap, the honest comparison is narrow and specific: it's about what the report gives you beyond the number, and what you can do with it the moment the scan finishes.
What Preuve is
Preuve.ai: a 60-second idea validator scanning 50+ live sources (Reddit, G2, Crunchbase, Product Hunt) for a viability score, competitor map, TAM/SAM/SOM sizing, and pivot recommendations. Free scan → $29 one-time report → “Radar Pro” monitoring at $19/mo. Publishes an honest 18.3% pass rate as a trust signal.
Side by side
| IdeaSignal | Preuve | |
|---|---|---|
| Live multi-source scan | Yes — 10+ platforms, queries generated per source | Yes — 50+ sources |
| Source-linked claims | Yes | Yes |
| Willingness-to-pay extraction | Real dollar amounts with verbatim quotes and how often each recurs | Not surfaced in their output or reviews |
| Execution layer | Built into the verdict — ICP brief, pricing hypotheses, outreach angles from the same signals | GTM playbook offered as a separate add-on |
| Verdict flip-conditions | Each verdict states the testable conditions that would change it | Not offered |
| Signal-density self-grading | Report grades how much real evidence the verdict rests on (confident / low / thin) | Not offered |
| Market sizing (TAM/SAM/SOM) | Not a headline feature | Yes — emphasized in their report |
| Price | Free scan; $29 one-time per concept for the full report, with lifetime access to it. | Free scan; $29 one-time; $19/mo monitoring |
Preuve details verified 2026-07-13. Competitor features and pricing change — check their site for the latest.
When Preuve is the better pick
- You specifically want TAM/SAM/SOM market sizing front and center in the report.
- You want live re-scan monitoring today — Preuve's Radar Pro ships it now.
- You value their published pass-rate benchmark as a calibration reference.
When IdeaSignal is the better pick
- You want the actual dollar amounts people say they'd pay, quoted and sourced.
- You want the validation to hand you an execution kit, not a separate playbook purchase.
- You want to know exactly what would flip a PIVOT to a GO — the testable conditions.
Common questions
Is IdeaSignal cheaper than Preuve?
The core report is the same price — $29 one-time in both cases, after a free scan. The difference is what's inside the report and what's included versus sold as an add-on.
Does IdeaSignal do monitoring like Preuve's Radar Pro?
Not yet. Scans are currently one-shot snapshots. Scheduled re-scans and alerts are on the roadmap; we won't claim demand-over-time tracking until it actually ships.
The bottom line
Preuve is a solid, source-honest validator — if the comparison were only “does it scan real sources and link them,” it would be a coin flip. IdeaSignal's edge is everything after the score: real willingness-to-pay quotes, an execution kit built into the verdict, and the flip-conditions that tell you what to test next.
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