What happens after the trial?

After your 14-day trial, access continues only if billing is added before the trial ends. You can add or update billing anytime from your account settings — no lock-in contracts.

Is there a free trial?

Yes. Starter and Pro both start with a full 14-day free trial. Stripe checkout starts the trial without a card. Add billing before day 15 to keep access; if you do not, trial access ends instead of billing automatically. The Free plan still includes: One free run per tool per day, no account needed.

What payment methods do you accept?

Payments are processed by Stripe, which holds PCI DSS Level 1 certification as the payment processor. We accept all major credit and debit cards. Enterprise plans are handled directly — contact us for details.

Yes. Upgrade or downgrade at any time. Changes take effect immediately, and we prorate billing automatically.

Yes. All data is encrypted at rest and in transit. Your data stays isolated and never trains public AI models. See our Security page for details.

Do you train public models on my data?

No. Your workspace data is isolated for your operational workflows and is not used to train public models.

Pricing | BrainStack Studio

Free

Run every structured decision tool on your own numbers. No credit card.

$0

Start Free

Every structured decision tool across 12 industries — real outputs, full decision trails
Run in your browser; results stay in this session (no account needed)
One free run per tool per day, no account needed.
CSV export and saved runs unlock on Starter; JSON export and tool chaining unlock on Pro

Real runs, real outputs. Exports unlock on Starter; AI help is Beta and provider-dependent.

BrainStack Studio Starter

Essential tools for growing businesses

$29/mo

14-day no-card trial; add billing before day 15 to keep access at $29/mo.

Trial and billing details

No card required to start. Add billing before day 15 to keep Starter access.

Everything in Free, plus:
Run every decision tool as often as needed
CSV export of calculator results
Save your tool runs to your account (reopen with assumptions intact)
One AI-assisted rewrite per day: turn a dense result into a plain memo (Beta, provider-dependent)
Monitored email support

BrainStack Studio Pro

Unlimited runs, exports, tool chaining, and API access.

$99/mo

14-day no-card trial; add billing before day 15 to keep access at $99/mo.

Trial and billing details

No card required to start. Add billing before day 15 to keep Pro access. Pro is $99/mo after trial.

Everything in Starter, plus:
Unlimited AI-assisted rewrites: convert any result into a shareable memo (Beta, provider-dependent)
JSON export and printable PDF reports
Save unlimited runs across devices — reopen any past scenario
Pass outputs between tools: send ROI savings into a cash-flow model without retyping
API key management: 100 authenticated requests/min with per-key usage tracking
Draft operating-plan builder: describe a workflow, get draft modules and runbooks
Unlimited content drafts from tool results with export formats (Beta, provider-dependent)
Expedited email triage

Enterprise

Team rollout planning, workflow setup review, and enablement support for larger organizations

Custom

Contact Sales

Everything in Pro, plus:
Team rollout plan and workspace setup reviewed with sales
Tool settings and workflow handoffs reviewed before setup
Branded report templates reviewed before launch
Security, compliance, and SSO requirements reviewed before enablement
Onboarding plan and priority support routing reviewed before launch

Quickest path to Pro

Start a free trial, run your first scenario, then decide.

Start Pro Trial Explore tools free

For

Founder, operator, or finance lead with a live business question

Output

A structured decision memo with assumptions, scenario notes, and next steps

Controls

14-day free trial - full access, no card to start; add billing before day 15 to keep Pro.

How We Earn Trust

Every figure on the /proof page was computed seconds ago by the same engines that power these tools. Re-run any of them with your own inputs and get the identical result.

Deterministic, auditable math

Every result is a pure function of your inputs. Same numbers in, same answer out — re-run it next quarter and reproduce it exactly. No hidden randomness, no model drift.

See it run live →

Published formulas, standard citations

NPV, payback, break-even, and contribution margin use textbook definitions — cited to Brealey, Myers & Allen and Horngren. Check the math against any finance reference. That is the point.

Human review gates, not blind automation

Every run shows inputs, assumptions, and decision trail — attached for a teammate to review before any action. These tools never send emails, change policies, or move money on their own.

15

decision tools

Public and paid tool surfaces render from the tool registry.

Source: TOOLS registry

12

industry paths

Explorer routing covers these configured operating contexts.

Source: INDUSTRIES explorer registry

7

workflow examples

Solution pages render from the workflow example registry.

Source: SOLUTIONS registry

Encrypted at RestAudit Trail on Every ActionCancel AnytimeNo Lock-in Contracts

Plan Comparison

Capability	free	starter	pro	enterprise
Saved workLive Example: reopen last month's cash-flow run with its assumptions intact.	Stored only in this browser	Save tool runs to your account (Explorer sessions up to 10)	Save unlimited runs across devices	Review shared team storage before setup
Calculator runsLive Example: run a break-even check, then rerun it with a higher labor cost.	One free run per tool per day, no account needed.	Run every decision tool as often as needed	Run every decision tool as often as needed	Review which tools and workflows your team needs
Exports and reportsLive Example: send a CSV result to a spreadsheet or print a memo for a meeting.	View results in browser only	CSV export for calculator results	JSON exports and printable reports	Review branded report templates before launch
Reuse numbers between toolsLive Example: send ROI savings into a cash-flow forecast without retyping.	Share links with prefilled inputs	Share links with prefilled inputs	Pass results between calculators (ROI, Cash Flow, Break-Even, Pricing)	Review tool handoffs before setup
AI-assisted rewriteBeta Example: take a 300-line ROI output and turn it into a 5-sentence owner memo.	Not included — core calculators still run fully	One AI rewrite per day (provider-dependent)	Unlimited AI rewrites while providers are available	Review provider and model settings before enablement
Content drafts from resultsBeta Example: draft a follow-up email from a completed cash-flow forecast.	Not included — use the result as your writing source manually	Up to 3 drafts per day from tool results (provider-dependent)	Unlimited drafts with CSV and JSON export formats (provider-dependent)	Review draft workflow and approval needs before launch
Draft operating plansLive Example: describe a client-onboarding workflow and get a draft with steps, owners, and checkpoints.	Sample plan only — no custom workflows	Sample plan only — no custom workflows	Create custom draft plans: describe the workflow, get draft modules, runbooks, and proof gates	Review plan templates and launch checks with sales
API keysLive Example: let an internal script call a tool with a tracked API key.	Use the web app only	Use the web app only	100 authenticated requests/min, API keys, and usage tracking	Custom rate limits/endpoints after technical review
Help and rolloutLive Example: ask support to help unblock checkout, exports, or account access.	Community docs	Monitored email support	Expedited email triage	Onboarding plan and priority support routing reviewed before launch
Security controlsReview Example: confirm who can access saved work and API-key usage logs.	Standard encryption	Standard encryption plus account history	API key controls, account history, and key usage telemetry	Security, compliance, and SSO reviewed before enablement

Frequently Asked Questions

Yes. Cancel your subscription at any time from billing settings. No lock-in contracts, no cancellation fees.

Pricing that proves first.

Free

BrainStack Studio Starter

BrainStack Studio Pro

Enterprise

Start a free trial, run your first scenario, then decide.

Deterministic, auditable math

Published formulas, standard citations

Human review gates, not blind automation

Plan Comparison

Frequently Asked Questions

Ready to run the numbers?

Pricing that proves first.

Free

BrainStack Studio Starter

BrainStack Studio Pro

Enterprise

Start a free trial, run your first scenario, then decide.

The math is the proof.

Deterministic, auditable math

Published formulas, standard citations

Human review gates, not blind automation

Plan Comparison

Frequently Asked Questions

Ready to run the numbers?