Last updated: April 26, 2026
Regex Tester Pro is a Chrome extension that runs entirely in your browser. We provide it on an "as is" basis. You can use the free tier forever, no signup. If you upgrade to Pro, you get the additional features listed on the upgrade page in exchange for the listed price.
You may install the extension on any device where you're signed in. A Pro license activates per browser instance via a device ID. If you wipe your browser profile, reactivate from the upgrade page using the license key sent to your email.
If you bought Pro and it's not working out, email support@peakproductivity.online within 30 days of purchase and we'll refund without questions. After 30 days, we'll still listen, but we can't guarantee a refund.
Don't use the extension to test patterns that target other people's private data without permission, or to evaluate text that you don't have the right to process. We can't enforce this technically because we never see your content, but it's still the deal.
The extension comes with no warranty. We test extensively but regex engines vary, especially across PCRE, Python, Go, and JavaScript. Patterns that work in our explainer may behave differently in another engine. Verify before shipping. To the maximum extent allowed by law, our total liability for any claim is limited to what you paid for the extension in the past 12 months.
We may update these terms. The Last updated date will reflect the latest revision. Continuing to use the extension after a change means you accept the new terms.