Privacy Policy

75 Days Challenge: Honest 75 · Last updated: August 25, 2026

75 Days Challenge: Honest 75 ("the app", "we") is a personal challenge tracker. This policy explains what data the app handles and the choices you have. The app is local-first: every core feature — the daily checklist, water tracking, progress photos, the calendar and export — works fully without an account, and in that case nothing you record leaves your device.

Your progress photos never leave your device

This is a hard rule in how the app is built, not a setting you have to find. Progress photos are stored only on your device and are never uploaded to us or to anyone else — not even when you turn on the optional cloud sync described below. Photo files are never sent to analytics and are never used for any other purpose. If you uninstall the app or clear its storage, your photos are gone from the only place they ever existed.

What we collect

• Without an account (default): your challenges, daily check history, water log, progress photos and settings are stored only on your device. We do not receive them.
• If you create an optional account: we collect your email address (used only to send you a sign-in code) and sync your challenges and daily check history — which tasks you completed, water amounts, completion status and dates — to our cloud database so you can access them across devices. Photos are excluded from this sync. Each row is protected so that only your signed-in account can read or write it.
• Duo mode (optional, paid): if you start a shared challenge with one other person, that person can see whether you completed each day and the challenge name. They cannot see your photos or your notes.
• Usage analytics: we collect anonymous, aggregated usage events (for example, app opens, a task being checked, and which screens are used) to improve the app. Your photos and the contents of your challenges are never sent to analytics.
• Purchases: subscriptions are processed by Google Play Billing. We receive your subscription status only — never your card or bank details.

What we do NOT do

• We do not upload, back up, or transmit your progress photos.
• We do not sell or rent your personal data.
• We do not show ads and do not use third-party advertising trackers.
• We do not use your data to train models or share it with anyone.
• We do not lock data you have already recorded behind a paywall.

Your choices and controls

• Export: you can export your full check history as plain text at any time, free, from Settings. Exporting your photos as a ZIP archive is a paid feature, but the photos themselves are always yours and always on your device.
• Delete: you can delete your account and all associated cloud data at any time from Settings. Local data — including photos — is removed when you uninstall the app or clear it from Settings.

Data retention

Cloud-synced data is kept until you delete your account, after which it is removed from our systems. Local data lives only on your device.

Service providers

We use Supabase (cloud database & authentication) and PostHog (privacy-oriented usage analytics) to operate the optional cloud features. Payments and subscriptions are handled by Google Play. These providers process data on our behalf under their own security and privacy terms.

Children

The app is not directed to children under 13, and we do not knowingly collect personal information from them.

Changes

We may update this policy; material changes will be reflected by the "Last updated" date above.

Contact

Questions or data requests: support@hannelife.com