Eclipse Predictor privacy policy

DRAFT, not yet in effect. Operator: HydroComplete LLC. Last updated: October 5, 2026

What we collect and why

With your explicit consent through Ring's account linking, Eclipse Predictor collects:

Your email address, to contact you about the service.
Your home's location: the centre of the ZIP code you give when you connect, or, only if you tap "Use my phone's location", your phone's position rounded to about 10 metres, its accuracy and your timezone. It is used only to work out which eclipses your home will see and when.
Which way each camera faces: a compass direction, view width and tilt you set. If you use your phone's compass, one reading is sent when you tap Save; the compass is not read at any other time.
Each linked camera's name and your Ring access tokens.
Still-image snapshots, only during an eclipse your home will see: from about ten minutes before the sun or moon is eclipsed and up, to about ten minutes after, every 30 seconds to 4 minutes. They are used only to make that eclipse's time-lapse film for you. The only other snapshots are a test film you ask for: one a minute for 10 minutes, from the camera you choose, at most once a day. No snapshot is requested at any other time, and no video or audio is ever collected.

How eclipses and camera views are worked out

Eclipse times and the positions of the sun and moon are calculated on our own server with the open-source Astronomy Engine library, from your home's location. The difference between magnetic and true north comes from the World Magnetic Model (WMM-2025), also calculated on our server. Whether the sun or moon is in a camera's picture is geometry from the direction you set; it is an estimate, and trees, eaves or an inaccurate compass reading can change it. Snapshots are not analysed in any way: they are only joined, in order, into a film.

Your account details

Email, location, timezone, camera names and directions, and Ring tokens are kept while your account is connected, to provide the service.

AI and model training

Eclipse Predictor uses no artificial intelligence, machine learning or automated image analysis. Your Ring data is never used to train any model, ours or anyone else's.

How long we keep things

Snapshots from an eclipse or test film are kept only until its film is made, shortly after it ends, then deleted.
Films are kept for 13 months after the eclipse, then deleted automatically, or sooner if you delete them.
Account details are kept until you delete your account or disconnect.

We do not sell, rent or share your data. Our only sub-processor is Fly.io, Inc. (US cloud hosting), which stores the service's data. No other third party and no external data service is used: eclipse, sun, moon, magnetic and ZIP-code calculations all run on our own server.

Your rights and deleting your data

Deletion is self-service and immediate. "Delete my account and data" on your Eclipse Predictor page deletes everything for every camera you ever linked: frames, films, settings, location and tokens. Removing Eclipse Predictor in the Ring app does the same automatically. No email is needed. You may also ask what we hold about you at the contact address below.

Human access

No person at HydroComplete LLC views your snapshots or films. They are visible only through your own private link.

Opting out

To stop a camera being recorded, turn it off for Eclipse Predictor in the Ring app, or disconnect. Without a linked camera nothing is captured.

Children

The service is for adults in the United States and is not directed at children under 13.

Changes

If we change what we collect or how we use it, we will update this page with a new date and, where feasible, tell you on your Eclipse Predictor page before the change takes effect.

Security

Data is sent over HTTPS and stored on encrypted cloud volumes. Your page is reached by a private link that works like a key; keep it private.

Contact

HydroComplete LLC, Asheville, North Carolina, USA. michaelbflynn@gmail.com

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