Prop firm data with receipts.
Every prop firm comparison site tells you the rules. Almost none of them tell you when the rules change — and in this industry, they change constantly and quietly. Prop Data Lab verifies firms’ official rules, pricing, and payout terms every week, publishes the data with source links and last-verified dates, and logs every change we catch.
Start here
- The comparison table — 6 firms, every rule sourced, verified July 13–14, 2026
- True-cost calculator — what getting funded actually costs at your realistic pass rate
- Apex’s 2026 overhaul — the product line changed completely in March; most reviews haven’t noticed
- Firm profiles: Apex · FTMO · Topstep · FundedNext · The5ers · FundingPips
- How we verify — official sources only, public change log, unverified means unverified
Found this week, by verifying the fine print
- FundingPips is not available to US traders — the restricted-country list won’t tell you; the checkout attestation does.
- FundedNext’s famous 15% challenge reward is computed on the target, not your profit — and US clients don’t get it at all.
- Two firms’ published prices didn’t match what their checkout actually charges.
- Three firms’ own documentation contradicts itself on core rules — all flagged in the profiles.
Why this exists
Retroactive rule changes are the #1 complaint traders have about prop firms — and the comparison sites that could hold firms accountable are funded by the firms they rank, with no incentive to keep receipts. We keep the receipts. Firm documentation gets archived weekly, diffed, and every change becomes a dated public record in the Rule Changes log.
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