Your swing videos never leave your device — all analysis runs on your phone. We do not collect information that identifies you personally. The only data involved is what Apple and our payments partner need to deliver and restore in-app purchases.
Check Your Swing lets you pick two short clips from your own device and compares them on-device — detecting body position, comparing the swings, drawing the overlay, and scoring the match. The videos are processed locally and are never uploaded to us or anyone else.
To offer subscriptions and the one-time Lifetime purchase, the app uses Apple's App Store and RevenueCat (our purchases provider) to process and validate purchases. This involves purchase information — the plan you bought, transaction identifiers, and an anonymous app-user ID generated by RevenueCat — being processed so we can unlock, manage, and restore your purchase. This information is used only to run your subscription or purchase. It is not used to track you across other apps or websites, and it is not linked to your identity by us.
The app asks for photo-library access only so you can choose the clips to analyze. Selected videos are used solely for on-device analysis during your session and are not uploaded or retained by us.
We do not collect your name, email, contacts, or location. There are no accounts, no advertising, and no third-party analytics or tracking beyond the purchase processing described above.
The app does not collect personal information from anyone, including children. It is rated suitable for all ages.
If this policy changes, we will update this page and revise the effective date above.
Check Your Swing helps you learn a tennis swing — forehand, backhand, or serve — by comparing your attempt side by side with a reference clip. Upload the swing to learn and your own attempt, mark where the swing starts, and the app plays them back together with a live skeleton overlay showing where you're on target and where you drift. Turn your phone sideways for a bigger side-by-side view.
Question, problem, or feature idea? Email us and we'll get back to you: hello@onelastjob.tech
Do my videos get uploaded? No. Everything runs on your device and your videos never leave your phone.
What video length works best? Short clips (up to about 8 seconds) work best and analyze fastest — a single swing is plenty.
The two clips aren't lining up. Make sure the whole body is visible in both clips and set the start point at the same moment in each — for example, the instant the racket starts moving back.
How do I manage or cancel a subscription? Subscriptions are managed by Apple: on your iPhone open Settings → tap your name → Subscriptions.
I paid on another device, or reinstalled. Open the paywall and tap "Restore purchases" to restore your access.
Check Your Swing is provided as-is for personal training and educational use. It gives automated feedback on movement and is not professional coaching; no guarantee is made about the accuracy of its analysis. You are responsible for exercising safely and for having the right to use any video you analyze. By using the app you agree to these terms.
The app offers auto-renewing subscriptions (weekly, monthly, and 6-month) and a one-time Lifetime purchase. Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. You can manage or cancel in your Apple ID subscription settings. Prices are shown in the app.
A limited number of free analyses are provided before a purchase is required. This allowance may change in future versions.
Questions about these terms: hello@onelastjob.tech
For any question, problem, or feature request, email us and we'll reply as soon as we can: