Last updated: September 5, 2026
Calculator and saved-plan data
HairMetric calculators run in your browser. The Personalized Braid Plan uses your browser's local storage to remember a generated plan and a local copy of any after-install feedback you enter. Your saved plan remains on that browser/device unless you voluntarily submit after-install feedback.
You can remove a saved braid plan using the “Clear saved plan” button or by clearing this site's browser storage. Private browsing, clearing site data, or switching devices/browsers can also remove or make the saved plan unavailable.
Optional anonymous after-install feedback
If you check the consent box and submit after-install feedback, HairMetric stores a non-identifying installation record. It can include a random plan ID, braid/style settings, head circumference, density, fullness, braiding-hair length and pack weight, and—only if you choose to add them—optional planning details such as nape-to-endpoint distance, height, ear-to-ear-over-crown distance and individual strand-thickness category. The record can also include HairMetric's original estimated range and braid count, your reported actual braid count, packs opened, approximate leftover fraction, optional exact grams, whether the estimate felt low/right/high, and an optional short technique or product note.
HairMetric does not ask for a name, email address, account or contact details with this feedback. Please do not place names, email addresses, phone numbers, health information or other sensitive information in the optional note. The collected records may be aggregated and analyzed to improve HairMetric estimates and create non-identifying benchmarks or data products.
You can use the Personalized Braid Plan without submitting this database feedback. Submission is voluntary.
Server and hosting data
Our hosting provider may process technical information needed to deliver and secure the website, such as IP address, browser information, device information and request logs.
Analytics, advertising and affiliate links
The initial version of HairMetric does not intentionally use advertising or affiliate tracking. If analytics, advertising, cookies or affiliate links are added, this policy will be updated to describe those services before they are enabled.
External links
HairMetric may link to third-party websites. Their privacy practices are governed by their own policies.
Voluntary feedback
If you voluntarily email HairMetric with calculator feedback or real-install information, the contents of that message are received through our email provider and destination inbox. HairMetric may use non-identifying information from voluntary feedback to improve calculator estimates. Do not send sensitive personal information.
Changes
This policy may be revised as the site gains new features or services. The date at the top of this page will be updated when material changes are made.
Contact
You can contact HairMetric at hello@hairmetrictools.com.