Privacy Policy
Effective: June 2026 · Tidemill / Heron Networks LLC
The Short Version
Tidemill apps store all data on your device. We collect nothing. No accounts, no servers, no analytics inside the apps, no third-party SDKs. Your data is kept in your browser's own storage on your device and never transmitted anywhere. Pro backup files are encrypted with AES-256-GCM under a passphrase only you know.
Data We Collect
None. Tidemill apps do not collect, transmit, or share any personal data. There are no accounts, no login, no analytics SDKs, and no network requests made by the app itself (except for apps explicitly designed to communicate with local network devices you control, such as Zero Remote).
Data Stored on Your Device
All user data is stored exclusively on your device, in your browser's local storage for this site. Most tools store it unencrypted, the same way any web page saves your settings, so anyone with access to your browser profile can read it. Tools that say they encrypt (such as Safe Auth and Network Vault) encrypt it on-device with AES-256-GCM, and Pro backup files are always encrypted under your passphrase. Clearing this site's data in your browser permanently deletes it.
Microphone (Signal Lab, Strobe Tuner, Voice Memo Pro, Pure Sleep)
These apps access the microphone to perform audio analysis or recording. Audio is processed in real time on-device. No audio is recorded in the background, transmitted anywhere, or stored in unencrypted form. Microphone access is only active while you are using the relevant feature.
Photo Library (Deep Scan, Exif Wipe, Smart Lens, Ingredient Scanner, Park Decoder, Caliper Lens)
These apps access your photo library only when you explicitly select an image. Images are processed on-device. No image is transmitted to any server. The apps do not read your entire photo library — they only receive the single image you choose.
Local Network (WiFi Pulse, Zero Remote)
These apps send network traffic only to hosts on your local network that you explicitly specify or that the app discovers via local broadcast. No data is routed through Tidemill servers.
In-App Purchases
Tidemill offers one optional Pro purchase. On the web it is a one-time payment handled entirely by Stripe — we never see or store your card details, and the only thing we receive is the email address Stripe collects, which is embedded in your license key and kept nowhere else. There is no account and no purchase database: the signed key itself is the receipt, which is why restoring Pro on a new device means pasting that key rather than logging in. In the mobile apps the same upgrade goes through Apple In-App Purchase or Google Play Billing, verified by the operating system.
This Website (tidemill.io)
The site is served by Cloudflare. We count visits with Cloudflare Web Analytics. It sets no cookies, uses no local storage and does not fingerprint visitors. For each page view Cloudflare records the page address, the referring site, the browser, operating system and device type, and the country (derived from the IP address, which is not kept for analytics). We see only totals, never an individual visitor. We use no Google Analytics, no advertising pixels and no cross-site trackers, so there is no cookie banner.
Children
Tidemill apps are not directed at children under 13. We do not knowingly collect data from children.
Changes to This Policy
If we make material changes to this policy, we will update the effective date above. Continued use of the apps after changes constitutes acceptance.
Contact
Questions? Email us at privacy@tidemill.io or call the business line, (703) 249-9248.