Three audits free, no card. See a finished audit first.

Pricing

Start free. Pay only when it is not your strategy.

Free accounts get 3 audits with all 8 tests. The paid report is for strategies you did not build, where a verdict is worth having before money changes hands. Every tier runs the same math on the same engine, so paying more never buys you a friendlier score.

Free
$0
forever
3 audits. No card, and no expiry date
  • ✓3 audits, lifetime
  • ✓All 8 statistical tests
  • ✓A number out of 100, a grade, and the reasoning
  • ✓Plain-English explanations
  • ✓Shareable result links
  • ✓No credit card
Start for free
Second opinion
$49
per report
For a strategy somebody else built, before you buy it
  • ✓Audit a strategy you did not build
  • ✓All 8 statistical tests
  • ✓PDF report you keep
  • ✓A written note on what the seller’s statement does not show
  • ✓Saved permanently to your library
  • ✓No subscription to cancel
Concierge deep audit
from $750
apply-only
For EA operators with live money at stake
  • ✓Manual research-program treatment
  • ✓Transaction-cost forensics
  • ✓Session-integrity sweep
  • ✓Stress-test battery
  • ✓Survival sizing
  • ✓Apply-only. We accept few
Apply by email

We take no affiliate or referral money from any prop firm, broker, or EA vendor.

What each tier includes

Every tier runs the same 8 tests on the same engine. Paying buys a report on a strategy you did not build, and the PDF that goes with it. It does not buy a friendlier answer.

FeatureFreeSecond opinion
Cost
List price$0$49 / report
Ongoing commitmentNoneNone
Analysis
Audits3 lifetime1 per purchase
All 8 statistical tests✓✓
Bootstrap 95% confidence intervals✓✓
Number out of 100 and a grade✓✓
Output
Plain-English verdict✓✓
Shareable result link✓✓
PDF report—✓
Written note on the statement—✓

Frequently asked questions

What happens when I hit 3 free audits?+
Nothing disappears. Every result you have already run stays readable and shareable. You just cannot start a new one. A second-opinion report is one more audit, and it works on any upload, including your own strategy. There is no clock on the free tier and no expiry date. The limit is 3 audits, total, forever.
Is there a subscription?+
No. There is nothing to cancel and nothing renews. You pay once for a report, or you do not pay at all. We had a monthly plan on the drawing board and removed it: most people audit a strategy a handful of times around a decision, not every week, and charging them monthly for that would be charging them for nothing.
What exactly is a second opinion?+
One full audit of a strategy you did not build, for $49. All 8 tests, the same engine the free tier uses, plus a PDF report and a written note on what the seller is not showing you. It is aimed at the moment before you send someone $500 for an EA or a signal subscription. Nobody selling you a strategy is going to hand you its out-of-sample collapse.
Why is the paid tier aimed at other people’s strategies?+
Because that is where a verdict changes a decision that has money attached to it and a deadline. Your own strategy you can audit free, three times, and you already know how it was built. A vendor statement is the case where you have no idea how many variants were tried before the one you are being shown.
Do you offer refunds?+
Yes. If a report did not do what this page says it does, email support@overfitcheck.com within 7 days and you get the money back. A report is only charged when the audit finishes successfully, so a failed upload never costs you anything.
Why is there no PBO score on my audit?+
The overfitting test that matters most, PBO, needs the results of every configuration you tested, not just the one you kept. On a single backtest it cannot say anything, so we do not score it and we do not fake it. The tests that do run stand in for it by asking how many variants you tried and deflating the result. If you want the real thing on a whole optimisation run, email support and tell us; it is not built and we do not sell things that do not exist.
Is there a team plan?+
Not yet. If you need multi-seat access, email us and we will work something out.
What counts as one audit?+
One uploaded backtest file: a TradingView XLSX, a MetaTrader 5 Strategy Tester report, or a CSV from any platform. Run the same strategy again with different settings and that is a second audit, which is exactly how you compare the two.

Try it free first. 3 audits, no card, no time limit.

Start free