Privacy

Calculator inputs stay in your browser

There is no account and no server-side profile. Calculator math runs in your browser. Some tools remember valid inputs in this site's localStorage so a result survives refresh; challenge replies and values opened from a shared query stay in memory unless you take an explicit local save action. LiftGauge has no API that receives calculator form submissions.

Share links are the important boundary: choosing Share can encode selected result values directly into the URL so another browser can reproduce the view. The regular rankings result link includes lift, result, bodyweight, sex, optional age, mode, and equipment. Anyone who receives that link can read those values, and the URL is necessarily processed when a browser requests it. The separate Challenge link omits bodyweight, age, sex, names, saved profile, and local history; its disclosure lists the exact fields before sharing.

Local rankings snapshots are opt-in, capped at 12, and stored only in this browser. They keep a bodyweight class and an all-ages cohort fingerprint, never the exact bodyweight or age entered. The rankings page can export, delete, or clear that ledger.

Anonymous page-view analytics Vercel Web Analytics

LiftGauge counts anonymous page views with Vercel Web Analytics. It does not use cookies to identify visitors, does not track visitors across other sites, and is not connected to any advertising network. Before a page view is recorded, LiftGauge strips query strings from the URL — the calculator values in a share link are never included in an analytics event.

What a tool-usage event contains

Beyond page views, LiftGauge records a small, fixed set of named interaction events so we can see which tools are used — never who used them or what they entered. Every event carries only a tool name and a coarse category, never a lift number, bodyweight, score, or any other typed value:

• calculator_start / calculator_complete — a calculator was opened, and produced a result.
• validation_error — an input was rejected (only the tool name is sent, never the invalid value).
• result_share / share_text_copy / strength_age_share_* — a result share or copy control was used, and by which coarse method (native share sheet, clipboard, download, fallback, or manual).
• tool_handoff — a result was passed from one tool to another (for example, scores to the attempt planner).
• challenge_arrival / challenge_complete / challenge_share — an anonymous challenge link was opened, completed, or reshared. Only link validity, the fixed comparison-source category, lift, and share method may be sent; never the link or its result.
• snapshot_action — a local snapshot was saved, exported, or deleted. Only the action, fixed comparison-source category, and lift may be sent; never the snapshot.
• pwa_install_prompt / pwa_install — the install prompt was shown, or accepted.

This event list is enforced by an event-specific allowlist in the app's analytics code. Unknown parameter names, free text, URLs, numbers, and values outside each event's fixed categories are dropped before an event is sent.

No advertising or cross-site tracking cookies

LiftGauge does not run advertising, does not use third-party tracking cookies, and does not build a cross-site profile of visitors. That is why there is no cookie-consent banner here: Vercel Web Analytics is cookieless and does not require one.

Clearing your local data

Everything LiftGauge stores lives in your browser's localStorage for this site, so the general way to remove it is through your browser: clear site data (or cookies and site data) for liftgauge.com from your browser's settings.

Some tools also expose a narrower control over their own saved state — for example, the plate calculator's "Reset to defaults" button clears just its saved plate inventory. There is currently no single in-app control that clears every tool's stored data at once; use your browser's site-data settings for a full reset.

Related: FAQ for how the calculators and data sources work · method for the underlying formulas.