# Understand plans, limits, expiry, and upgrades

Use the current pricing catalog and your signed-in **Plans & billing** page for plan information. Prices, included features, and availability can change; screenshots and documentation examples are not purchase quotes.

## What the plan limits mean

- **Access length** is the period for which the purchased plan is available.
- **Maximum test duration** is the duration limit for an individual test. It is different from the plan's access length.
- **Concurrent tests** is the number of tests the plan allows at the same time.
- **API access** indicates whether the plan includes API use. Creating a key does not bypass the plan requirement.
- **Advanced methods / Chains** is a plan capability. Availability should be checked in the current catalog and workspace.

## Find my active plan and expiry

Open [Plans & billing](https://retrostress.net/plans-billing). The **Your plan** section shows the current subscription and expiry, or **No active plan**. Dates are displayed using the browser's local time.

If you expected an active plan after paying, open the relevant entry in **Payment history** and inspect its status. See [payment status meanings](https://retrostress.net/docs#payment-status) before starting a second purchase.

## Buy access or review an upgrade

Select **View plans**, choose the available plan or custom-plan options, and review the final checkout details before paying. Eligible remaining-plan credit is calculated by the server from the current purchase. A previously displayed estimate can change as time passes.

Credit toward a purchase is not a promise of a cash refund. Do not assume that a new purchase adds its access length to the old expiry; review the resulting plan details and ask support if the checkout does not make the outcome clear.

## What happens near expiry?

Check the expiry in Plans & billing and review the current purchase options if you need continued access. Do not assume an automatic renewal or a grace period from this guide. For a question about a specific renewal or upgrade total, provide support with the plan name and checkout details, without credentials.