> ## Documentation Index > Fetch the complete documentation index at: https://docs.askfutures.com/llms.txt > Use this file to discover all available pages before exploring further. # Account and billing > Plans and pricing, the 3-day free trial, how backtest credits work, top-ups, and managing or cancelling in the Stripe portal. AskFutures bills by the **backtest** — the one thing you actually came to do. Pick a monthly plan for a pool of backtests, start with a 3-day free trial, and top up anytime if you run hot. Everything is managed in the secure Stripe billing portal. ## Plans | Plan | Price | Backtests / mo | Best for | | ------------ | -------------- | -------------- | --------------------------------- | | **Starter** | **\$10 / mo** | 50 | Trying ideas casually | | **Standard** | **\$30 / mo** | 200 | Active iteration — *most popular* | | **Pro** | **\$100 / mo** | 1,000 | Heavy testing and optimization | A **backtest** is the metering unit. Describing a strategy, editing it, chatting, and reading results don't cost a backtest — only actually running one on historical data does. Optimizing a strategy sweeps many parameter combinations, but those runs are metered as **optimization cycles** — a separate pool that does **not** draw down your monthly backtests. Every plan includes a large monthly allowance of optimization cycles (roughly 50 per backtest), so you can sweep freely; only strategies you explicitly backtest count against your plan's backtests. Your exact cycle allowance is shown in the Billing panel. ## The 3-day free trial New accounts start with a **3-day free trial** so you can run the full loop — describe, backtest, iterate — before paying anything. A payment method is required to start the trial. You're not charged during the 3 days. The trial runs the same deterministic backtests as a paid plan — real data, real numbers. When the 3 days end, your plan begins and your card is charged. Cancel before then in the billing portal and you won't be charged. ## How backtest credits work Your plan gives you a monthly pool of backtests. Need more in a busy stretch? Add a top-up. Top-up credits stay on your account until you use them — they don't reset at the end of the month and they don't disappear. Buy more backtests whenever you want, in **$10**, **$25**, **$50**, or **$100** packs. They stack on top of your plan's monthly allowance. Your monthly plan allowance refills each billing period. Top-up credits are separate and roll over indefinitely. ## Manage your account Everything — your plan, payment method, invoices, and cancellation — lives in the **Stripe billing portal**, reachable from your account settings. Upgrade or downgrade anytime in the portal. Changes follow Stripe's standard proration. Add or replace a payment method in the portal — your details are handled by Stripe, not stored by us. Every charge has a downloadable invoice in your billing history. Cancel anytime in the portal. Your plan stays active through the end of the current billing period, then stops — no further charges. ## Billing terms Plans **auto-renew** at the end of each billing period until you cancel. Payments are **non-refundable**, including for unused backtests. Cancelling stops future charges but does not refund the current period. See the [Terms of Service](https://askfutures.com/terms) for the full billing terms. ## Next steps Put your backtests to work and understand the results. See how parameter sweeps and optimization cycles work. Start with an idea in plain English. The full billing and account terms.