Privacy
Privacy Notice
What CoachAlgo collects, why, and the choices you have.
Last updated November 11, 2026
Who this covers
This notice covers the CoachAlgo website and web app, including swing analysis, the simulator, accounts, and the Pro membership. The legal operator’s name, address, and governing jurisdiction will be stated here. Until then, contact us through Support.
Swing video stays on your device
Videos you record or choose are processed in your browser. CoachAlgo does not upload them. Recent clips may be kept in your browser’s storage on that device so you can replay a saved report there. You can clear them in Account & settings.
Data we store
- Account: name, email, account ID, sign-in method (email or Google), and your 13+ confirmation.
- Swing reports: scores, category ratings, timing and motion measurements, coaching focus, and a compact sequence of body keypoints (body positions) used for replays. No images or video.
- Rounds: simulator results, including the course, hole-by-hole scores, whether the round was finished, and when it was played.
- Improvement data (on by default): numbers from your sessions that help us read swings and track balls better, and a de-identified copy we keep after 30 days. See below.
- Membership: plan status and period dates, plus customer and subscription IDs from our payment provider. Card details are handled by the payment provider and never stored by CoachAlgo.
- Product and security events: feature usage, errors, and authentication activity. Hosting providers keep standard network logs.
- Crash and error reports: when something in the app breaks, we use Sentry to receive a report of what broke, the page path (without anything after a “?”), and your browser and device type. Personal details such as your name, email, account ID, and IP address are removed before the report is sent.
Improving CoachAlgo
To make swing reading and ball tracking more accurate, we keep some of the numbers your sessions produce: the body-keypoint traces of your camera swings, what the swing detector and ball tracker measured, the launch values used for each shot, the reason an analysis could not be completed, and any feedback or launch-monitor numbers you choose to enter. We never keep video or images for this.
This is on by default for signed-in players. You can turn it off in Account & settings at any time. Turning it off, or deleting your account, deletes the improvement data linked to you. We keep that data for up to 12 months.
After 30 days, we also keep a de-identified copy of these numbers. While sharing is on, it also includes the numbers from the swing reports you save, such as scores, category ratings, timing measurements, and body-position traces. We remove your account details and IDs and keep only the date, not the time, so the copy can’t be linked back to you or your account. Because it can’t be matched to anyone, we keep it after the 12 months and after an account is deleted. If you turn sharing off or delete your account within 30 days, those sessions and reports are left out of it entirely.
We use this data only to improve CoachAlgo, and never sell it or use it for advertising.
Members of the previous CoachAlgo service
If you had an account on the earlier version of CoachAlgo, we keep your email address, an internal account reference, and whether you were a paying member, so we can recognize you and apply your complimentary Pro when you sign up again with the same verified email. We do not create an account for you. Records that are not claimed within the announced window are deleted.
Location
CoachAlgo does not request, use, or store your location.
How we use data
- Provide analysis, the simulator, statistics, and sync across your devices.
- Run memberships, prevent abuse, keep accounts secure, and fix problems.
- Understand which features work, in aggregate, to improve the product.
- Meet legal obligations.
We do not sell personal information or use it for third-party advertising.
Sharing
Your reports and rounds are private by default. If you create a share link for a swing, anyone with that link can see its score, categories, motion measurements, and a replay of body positions. They never see the video. You can turn a link off at any time. The Daily Hole shows only anonymous, aggregate score counts.
We use service providers for hosting (Vercel), database, file storage, and authentication (Supabase), sign-in (Google, when you choose it), payments (Stripe), email delivery (Resend), and crash and error reports (Sentry). They process data only to provide those services.
Age
CoachAlgo is for people 13 and older. If you believe a child under 13 has created an account, contact support and we will remove it.
Your choices
You can delete individual swing reports, turn off share links, clear on-device videos and drawings, and permanently delete your account in Account & settings. Deleting your account removes your reports, rounds, profile, and the improvement data linked to you, and cancels any membership, except records we must keep for security, fraud prevention, or law (for example, payment records). De-identified copies described in Improving CoachAlgo can’t be traced to you, so they stay.
If you have questions, contact Support or email info@coachalgo.com.
Changes
We will show material changes in the product before they take effect.