Your inputs stay in your browser.
Updated November 12, 2026.
Calculations and protocols
Calculation inputs are processed in the page. Saved protocols use this browser’s localStorage. We do not operate an account system, protocol database or cloud sync service.
Browser storage is not encrypted by this application. Other people with access to this browser may access saved entries. Browser data removal deletes them. Use JSON backup, restore and clear controls in the planner.
Files you export
JSON backups and calendar files contain your protocol inputs. They are generated locally. If you import a calendar file into a cloud calendar, that provider receives its contents. Printing and downloading are under your control.
Optional usage analytics
Google Analytics 4 loads only after you choose “Allow analytics”, and only when production measurement is configured. Declining leaves the tools fully usable. You can change the choice using “Analytics preferences” below.
Usage events measure page groups, starting and completing calculations, generating and saving schedules, downloads and print requests. We do not send entered doses, concentrations, item names, protocol names, notes, search text or exported file contents.
Reference detail URLs and titles are replaced with a generic reference group before analytics events are sent. Source parameters use a fixed allowlist, and referring URLs are reduced to their origin. Advertising features and Google Signals are disabled in the integration.
When allowed, GA4 uses first-party analytics cookies to estimate returning browsers and activity over time. This is pseudonymous measurement, not a count of identifiable people. Consent and blocking can reduce measured coverage. Withdrawing consent removes this site’s analytics cookies and reloads the page to stop the tag.
Consent storage and hosting
A localStorage entry stores your analytics preference; sessionStorage avoids repeated start events during a browser-tab session. Hosting via Vercel necessarily processes ordinary network requests, including an IP address and requested URL. Browser-local protocol storage does not eliminate hosting logs.
Google Search Console reports search performance. It does not require a visitor tracking script on this website. External source links open with no referrer information sent by this site.