Terms & Refunds
What you're buying
Zustand DevTools Pro: Trace Sessions is a one-time license purchase that unlocks unlimited Trace Sessions in the Chrome extension: recorded bug reproductions with deep path-level diffs, best-effort source call-sites, snapshot comparison, bookmarks and notes, and redacted session export/import. The free tier (store inspection, timeline, safe time-travel, three full preview Trace Sessions) needs no purchase. It is not a subscription: one payment, no renewal, no expiry.
Professional services
The time-limited Zustand Bug Clinic is a no-charge feedback cohort for up to five suitable, reproducible bugs accepted through 18 September 2026. Participants provide a redacted Trace Session or minimal reproduction and agree to answer three short follow-up questions. Any request to publish an anonymized case summary is separate and optional. Acceptance depends on the input being safe and sufficient to review.
The Async Zustand Trace Diagnosis shown on the product site is a separate professional service, not part of the Pro licence. Each engagement starts only after the input, deliverable, timing, price and payment method are agreed in writing. If the supplied trace is insufficient to perform the review, the engagement does not start.
License
- One license covers one person, on up to 5 Chrome profile/browser activations.
- Personal and commercial use are both fine.
- The extension and bridge source code are separately available under the MIT license on GitHub; the purchase is a license key that unlocks the paid features, not a transfer of any additional rights to the source.
Payment
Purchases are processed by Gumroad. Gumroad handles payment processing, applicable tax, receipts, and licence delivery. We never see or store your full payment details.
Refunds
If the product doesn't work for you, email kuba.opoczka@gmail.com within 30 days of purchase for a full refund, no questions asked. Refunds are issued through Gumroad back to your original payment method. A bug report on GitHub issues is always appreciated, but never required for a refund.
Support
Bug reports and feature requests: GitHub issues. Everything else, including license problems: kuba.opoczka@gmail.com.
Changes
If these terms change, this page will be updated and the date above will change. Changes never apply retroactively to purchases already made.