CoSt
A Growth Decision Engine that turns any website URL into one prioritized growth bet for the next 30 days. Unlike audits that dump 50 findings on your desk, CoSt gives you a single Primary Bet and Kill List
- Launched
- Clicks
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- Categories
- Analytics,Automation,Utilities
- Runs on
- Web
- Pricing
- Free plan, paid upgrade
About CoSt
CoSt — The Growth Decision Engine
Most audits end with a list. CoSt ends with a decision.
CoSt (costdecision.com) is an AI-powered Growth Decision Engine built for founders, growth teams, and agencies who already have 40 findings on their desk and still have zero idea what to ship first. Instead of another 50-point recommendation list, CoSt delivers a single highest-leverage bet for the next 30 days — backed by live competitor data and paired with a Kill List proving why everything else lost.
What CoSt Does
Enter any website URL, pay via Stripe, and in about six minutes you receive:
A Primary Bet with a named hypothesis, three actions to ship this week, and an urgency score.
A Kill List — every alternative bet scored and rejected with a specific reason (speed, feasibility, impact, audience fit). No other audit tool on the market does this.
Evidence Strength breakdown across diagnosis alignment, competitive whitespace, ICP fit, and implementation speed.
"If Wrong" Downside Quantification — time, budget, and reversibility risk, so the decision to act takes seconds, not a committee.
Execution Assets (on the $499 tier): rewritten hero copy, ad variants, email subject + body, landing page copy, and a 3-tier budget allocation from $0 to $50k+.
What a Real Run Looks Like (Sample: GLP-1 Health App- https://myglp1.app)
To understand the depth of the engine, here is what CoSt delivered in a recent run for a health-tech startup:
Diagnosis: Found 20 conversion leaks and messaging failures, assigning a site health score of 5/10.
Opportunity Scoring: Evaluated 12 distinct growth bets. The winner scored 9.45/10: rewriting the hero section around a specific clinical stat ("40% of weight lost on GLP-1 is lean muscle"), with a projected +15–30% CTR lift.
The Kill List: Killed 3 tempting alternatives with hard evidence. A Content Hub was rejected (Speed score 2/10 — takes 3-6 months to rank);
Comparison SEO pages were killed (Speed score 4/10); a Doctor-shareable PDF was rejected (Feasibility score 4/10 — requires heavy engineering).
Execution & Testing: Delivered 6 ready-to-paste assets (ads, landing copy, outreach scripts) and designed a strict 7-day A/B test with a clear kill signal (≤3% lift = stop and pivot to the secondary bet).
Budget Allocation: Recommended the "Bootstrap" tier ($0–2k) to validate the messaging before scaling spend.
The 11-Stage Pipeline
Behind every run is an 11-stage pipeline: ICP + brand modeling, market analysis, competitive whitespace research (with live scraping of actual competitor sites, not LLM guesses), conversion diagnosis, opportunity scoring, bet selection, kill list generation, execution asset drafting, and a 90-day roadmap. If a bet carries medical, legal, or brand risks, the engine's validate_bet stage flags it for human REVIEW rather than auto-shipping.
What Sets CoSt Apart
Time: ~6 minutes vs. 4 weeks for a strategy consultant.
Price: $299 (Diagnosis) or $499 (Diagnosis + Execution) vs. $5,000–$15,000 for an agency engagement.
Output: One decision, not a 40-page deck you'll never re-read.
Honesty: Real sample reports are available at costdecision.com/sample — no email gate, no friction. Guarantee: "No Clarity, No Charge" — full refund within 48 hours if the Primary Bet doesn't give you clarity, or within 30 days if it doesn't move the agreed metric.
Who It's For
Founders post-audit: you just finished a CRO engagement, a consultant teardown, or a heatmap review and still don't know what to ship Monday.
Growth teams drowning in backlogs of "growth ideas" with no scoring framework.
Agencies via the $1,490 Agency Pack (5 runs, $298/client, 90-day validity) — delivering a $5k-level strategic verdict per client in minutes.
The Bottom Line
Consultants sell decks. Audit tools sell lists. CoSt sells the one thing most growth teams actually need: a decision. With the Kill List as its most defensible feature, CoSt doesn't just recommend what to do — it forces you to confront what to stop doing. That's the difference between a report you read once and a decision system you run every 30 days.
Sample report - https://costdecision.com/sample
What CoSt does that nothing else does
It kills alternatives with evidence: in a real run it scored 12 bets, picked one (9.45/10) with a 7-day A/B test and kill signal, and rejected 3 with scored reasons. No other tool does this.
Who CoSt is for
- Founders post-audit - Growth teams drowning in backlogs - A consultant teardown - Agencies (5 runs, $298/client, 90-day validity) — a $5k-level strategic verdict
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8 comments
Tomas Keller
Can CoSt analyze websites behind a login, or does the URL need to be publicly accessible?
AnonymousMaker
Hi Tomas! The URL needs to be publicly accessible — CoSt can't currently analyze pages behind a login.
Owen Fitzgerald
Can I rerun an analysis after shipping the recommended actions to see if the next 30 day bet has changed?
AnonymousMaker
Yes — CoSt OS tracks your active bet through weekly check-ins and a 30-day review. Once that bet is marked complete, you can rerun the analysis. The next diagnosis takes the previous bet into account, so it picks up from where the site actually stands now, not from scratch.
Viktor Lindqvist
What does the free plan include, and do I need to pay separately for each website analysis?
AnonymousMaker
Hi Viktor! A: The free tier gives you the diagnosis without the gatekeeping. You just paste your URL, and our agents will run a full sweep to show you your top CRO issues and your ICP (Ideal Customer Profile) analysis. There is no credit card required, no 30-minute discovery call, and no "locked PDF" tricks. You get to see exactly what the agents found. However, the final output—the prioritized Growth Bet with the dollar-range ROI (powered by our Economist agent's Monte Carlo simulations)—stays locked. To unlock that specific decision for your site, it's a one-time $299 "Run My Site" fee. We don't do monthly subscriptions because we don't believe in charging you for a dashboard you'll only look at once. You pay for the decision, not the seat. And yes, if you want to run a deep-dive analysis on a second domain, that would be a separate run.
Felix Brandt
How does CoSt choose the single Primary Bet, and can I see the competitor data behind its decision?
AnonymousMaker
Hi Felix! CoSt selects the Primary Bet through a scored tournament of opportunities evaluated across impact, feasibility, speed, and confidence, where the winner undergoes independent validation and all rejected alternatives land in the Kill List with specific reasons.
Live competitor data is fully transparent in the report's Market section—featuring named competitors and whitespace zones that directly justify the chosen bet—with a complete sample available at costdecision.com/sample without an email gate.