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Professional research software · local-first

Test free. Keep your work. Supervise AI — without rewriting science.

Every plan uses the same local proof, sealed holdout and uncertainty evidence. You pay only for continuity or supervised research capacity. Payment never improves the verdict, holdout or uncertainty evidence.

Free: prove an idea. Builder: preserve every useful report. Operator: run bounded AI campaigns under your control.

A Lab software subscription, not a premium website: start with Free, upgrade from a useful report, review the order in secure Stripe Checkout and cancel online at any time. Read the terms and privacy policy.

After free local proof

Two professional paths. One scientific core.

Strategy Arena seals the holdout locally. Payment never rewrites a verdict. Choose Lab capacity when you need continuity or supervised research; choose TradingView only for optional chart review after a verified survivor.

Lab capacity · Stripe

Preserve work. Supervise AI.

Builder keeps private report history and versions. Operator adds bounded, auditable AI campaigns under your control. Secure Stripe Checkout; cancel online anytime.

  • Same science as Free
  • Free account · card only at checkout
  • Never improves holdout evidence
Chart review · TradingView

Optional. Proof first.

TradingView is chart review, alerts and account workflow — not Strategy Arena science. First-time web accounts use the disclosed partner path after a Lab KEEP survivor; existing accounts stay on a neutral path.

  • Lab KEEP + exact Pine required for first account
  • $15 coupon context · web only (TV rules)
  • Desktop/mobile app purchases excluded

Affiliate disclosure: Strategy Arena may receive a commission if a first-time user later buys an eligible TradingView web subscription. Partner attribution is for first-time users and web purchases only. Creating an account from a bare page click permanently loses that path. Stripe subscriptions are separate Lab capacity — never a better holdout. Coupon context · Terms

Order review linked to the Lab Your report and selected workflow stay attached to this order review. A free account is required before Stripe. Technical identifiers stay hidden from the buyer and never verify scientific evidence.
Lab Report upgrade decision Keep this proof alive after the desktop run.

Builder preserves evidence. Operator runs larger bounded research. The explicit workflow selects the plan; PnL, rank and quality never do.

Pending checkout Continue the checkout you started.

Your plan and Lab attribution were saved before signup. Continue when ready.

Secure Stripe Checkout · cancel online anytime · same science on every plan

TRY IT · FREE

Test one strategy now

0 EUR / month

For checking an idea without an account or card before deciding whether it is worth keeping.

  • 100 local variants + sealed chronological holdout
  • Verdict, Lab Report and JSON export
  • Bounded local AI, one proof at a time
  • Uncertainty diagnostics included
  • No account or card required
Start free
FOR SAVED WORK
Arena Builder

Keep every useful report

9 EUR / month

For returning tomorrow to the same reports, strategy versions and exports without losing the research trail.

  • Everything in Free
  • Private report history
  • Saved strategy versions
  • Reusable proof exports
  • Same verdict, holdout and uncertainty evidence as Free
Keep my research — 9 EUR/month

Free account required. Secure Stripe order review before payment.

Arena Operator

Let an AI explore under my control

29 EUR / month

For delegating a research queue to an AI while every campaign stays bounded, sequential, auditable and human-controlled.

  • Everything in Builder
  • Bounded supervised campaigns
  • Batch research capacity
  • Additional local evidence runs
  • No checkout, TradingView, publication or trading action exposed to the Agent
Start supervised research — 29 EUR/month

Free account required. Secure Stripe order review before payment.

Not sure? Start with Free.

Test a strategy, read the verdict and export the report before creating an account or choosing a paid workflow.

Download the Lab

Upgrade for a workflow, never for a better verdict

Choose Builder when you need to keep your work. Choose Operator when you need an AI to run bounded campaigns. Both use the same scientific rules as Free.

Compare all features
Capability
Free
Builder
Operator
Local proof, report review and JSON export
Included
Included
Included
Bounded local Agent control
One proof
One proof
Supervised campaigns
Private report history
Included
Included
Saved strategy versions
Included
Included
Reusable proof exports
Included
Included
Durable supervised campaigns
Included
Batch research capacity
Included
Additional local evidence runs
Included
Verdict, holdout and uncertainty evidence
Same
Same
Same

Only capabilities present in the verified public plan catalog are offered. Exact prices are confirmed by the same content-addressed catalog before checkout.

Strategy Arena is paper-trading research software. No real capital is traded by the public arena.