The free tracker saves entries in the browser's own local storage, with no account. Optional backup and cross-device sync is a paid upgrade.
NEW YORK, NY, UNITED STATES, August 26, 2026 /EINPresswire.com/ -- Cycle tracking is among the most detailed forms of self-recorded health information many people ever produce: dates, flow, symptoms, moods, notes, sometimes years of it. It is also, commonly, an account-first experience: register first, then log day one, with the record living on someone else's server from then on.
PeriodTools, a free suite of cycle and fertility calculators, takes a structurally different approach to its period tracker. Entries are saved in the browser's own local storage on the user's device. There is no account, no sign-up and no paywall on the tracker, and without an account cycle entries are not transmitted to a server at all. The practical consequence is simple: on the free tracker there is no stored profile to be requested, breached or sold, because the entries never reach a server to be stored.
The design also sets a real limitation, which the tool states plainly rather than hiding: because the log lives in one browser on one device, clearing browser data removes it, and it does not automatically appear on a second device. PeriodTools offers optional backup and cross-device sync as a paid feature, for users who choose to create an account and accept that trade-off; for everyone else the sync path stays switched off: no account, no sync status, and no cycle entry leaving the device.
"Privacy claims are usually promises about what a company will choose not to do with your data," said the PeriodTools team. "We wanted the humbler promise that is actually stronger: on the free tracker we can't do anything with the data, because it never reaches us. The honest cost is that a local log is only on that one device — and users deserve to be told that clearly, not discover it later."
Alongside the tracker, PeriodTools publishes free calculators and reference pages covering cycle length, ovulation timing, conception and related questions. All of it is informational: PeriodTools is not a medical device, does not provide medical advice, and is not a contraceptive method. Anyone with concerns about their cycle, fertility or reproductive health should consult a qualified healthcare professional.
PeriodTools' calculators and period tracker are free to use at https://periodtools.com; optional backup and cross-device sync is a paid upgrade.
About PeriodTools
PeriodTools is a free collection of cycle, ovulation and fertility calculators, including a period tracker that stores entries locally in the user's browser with no account required. Optional backup and cross-device sync is available as a paid upgrade. Its content is informational and is not a substitute for professional medical advice.
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