Privacy Policy
Last updated: July 13, 2026
This policy explains what the TideWatch mobile app (the “App”), published by Technology One, Inc., collects and why. We’ve tried to write it in plain language rather than lawyer-proof fog.
The short version. TideWatch has no accounts and asks for no personal information — no name, no email, no password. There are no ads, no analytics SDKs, and no tracking across other apps or websites. We never sell your data. Most of what the App knows about you — your saved places, your settings, your photos — never leaves your phone.
Information we collect
An anonymous ID
When you first open the App, it creates an anonymous account for you on our backend. It is a random identifier — a UUID — with no name, email, or contact details attached. The App shows it to you as your Support ID on the About screen. It stays the same for as long as the App is installed, and it is sent with requests to our backend so we can recognize the same install across launches (for example, to know whether you have TideWatch Pro).
Because this ID is persistent, the other information described below is linked to it rather than being fully anonymous. We are being explicit about that because it matters.
Basic app information
Each time the App starts, it sends us your platform (“ios” or “android”), the app version, and the time it last ran. We use this to understand which versions are in the wild and to support you when something breaks.
Location — only when you ask for it
If you use the Near Me feature to find tide stations around you, the App asks for your device location and sends those coordinates to our backend so it can return the closest stations. We do not write those coordinates to our database and we do not build a location history. Your position is used to answer that one request and is then discarded, though — like any web service — our hosting provider’s operational request logs may briefly retain the request.
Location is requested only while you are using the App and only when you tap Near Me. There is no background or continuous location tracking. If you never use Near Me, the App never asks for your location, and you can decline or revoke the permission at any time in your device settings — everything else keeps working.
Which tide stations you look up
To keep tide data fast and reliable, the App records a small diagnostic event when it fetches tide predictions. That event contains the station ID you were viewing, whether the fetch succeeded, how long it took, and — if it failed — what kind of error occurred. These events are linked to your anonymous ID.
In practical terms: our backend can see that a particular anonymous install looked up a particular tide station at a particular time. A tide station is a coarse geographic signal, so we treat these records as sensitive, keep them to the minimum needed to operate the App, and delete them on a rolling basis. We do not use them to profile you and we do not share them.
Place searches
When you search for a place by name, the text you type is sent to our backend and, to turn that text into a location, may be forwarded to Google’s Geocoding service. Google receives the search text (for example, “Dennisport”) but not your identity or your device’s IP address, because the request is made by our server rather than by your phone.
Purchases
TideWatch Pro is sold through the Apple App Store and Google Play. They process the payment — we never see or handle your card details. When a subscription becomes active, we store a single flag on your anonymous profile recording that it came from a subscription. We do not receive or store your receipt, order number, price paid, or store account.
What stays on your device
The following never leaves your phone. There is no code in the App to upload any of it:
- Your favorite and saved places, including any nicknames you give them
- Your selected station and recently viewed stations
- Your Tide Insights activity profiles and filters
- Your theme, accent color, and display settings
- Any background photo you choose from your photo library — it is copied into the App’s private storage and is never uploaded
- Cached tide, weather, and marine data, so the App works offline
Who we share data with
We do not sell your data, and we do not share it for advertising. We do use a small number of service providers and data sources:
- Supabase — our backend and database host (United States). It stores your anonymous profile and the diagnostic events described above, and it processes the Near Me and search requests.
- NOAA CO-OPS — the source of tide predictions. Your device requests tide data from NOAA directly, so NOAA receives your device’s IP address and the station and dates requested. No identifier of yours is sent.
- Open-Meteo — the source of weather and marine forecasts. These are fetched by our server, not your phone, using the tide station’s coordinates. Your device is not exposed to Open-Meteo.
- Google — receives place-search text via our server (see above). The App also loads its typefaces from Google Fonts, which means Google receives your device’s IP address as part of that request.
- Apple and Google — process subscription payments under their own privacy policies.
We may also disclose information if we are legally required to, or to protect our rights or someone’s safety.
What we do not do
- No advertising, ad SDKs, or ad identifiers (no IDFA, no advertising ID)
- No third-party analytics, crash-reporting, or session-replay SDKs
- No tracking of you across other companies’ apps or websites
- No selling or renting of data, ever
- No email address, name, phone number, or password is collected
How long we keep things
Your anonymous profile exists for as long as the App is installed. Diagnostic tide events are kept only as long as they are operationally useful and are purged on a rolling basis. Deleting the App removes everything stored on your device; to have the records associated with your anonymous ID deleted from our backend, see below.
Your choices and rights
- Location: decline or revoke the permission in device settings. Near Me stops working; nothing else does.
- Photos: the App only reads a photo you explicitly pick.
- Deletion: email us your Support ID (About → tap the ID pill to copy it) and we will delete the profile and diagnostic records associated with it. Uninstalling the App erases all local data.
Depending on where you live — for example, in California or the European Economic Area — you may have rights to access, correct, delete, or port your information, and to object to certain processing. Because we hold so little, and none of it identifies you by name, the practical route is the deletion request above. Contact us and we’ll honor applicable requests.
Children
TideWatch is not directed at children under 13, and we do not knowingly collect information from them. If you believe a child has provided us information, contact us and we’ll delete it.
Changes to this policy
If we change what we collect, we’ll update this page and the “last updated” date, and we’ll flag anything significant in the App.
Contact
Technology One, Inc. — appsupport@technologyone.net. See also our Terms of Use.