Scope
This policy explains how Fuzhou KnockDream Technology Co., Ltd. handles information when you use Power. Power provides video velocity measurement, training records, 1RM estimates and strength training calculators.
Information Power processes
Content you select or enter
- Training videos you choose, plus frames, bar path, repetitions and velocity results produced during analysis.
- Exercise type, load, repetitions, sex, body weight, height, age, heart rate and other values you enter into calculators.
- Training records, 1RM results and load-velocity data points that you choose to save.
Information we do not collect
Power currently has no account system or advertising network. It does not collect precise location, contacts, advertising identifiers or activity across other apps.
Purchase information
If you open the Power Pro purchase screen, buy a product or restore purchases, RevenueCat processes an App-generated anonymous customer identifier, product and entitlement status, purchase receipt or Google purchase token, transaction dates, renewal status, locale and basic device or App technical information. Power does not ask for your name, email address or payment-card details.
Processing and storage
Video decoding, barbell tracking, velocity calculation and path generation happen on your device. Training videos are not uploaded to our servers. Analysis results and records you save remain in the App's local storage.
If you export an annotated video, the exported file is saved to the system photo library only after your action. The original video remains managed by the app or library where you selected it.
Purchase information is transmitted using encrypted connections to RevenueCat so Power can validate Store transactions, prevent purchase fraud, restore access and provide Power Pro entitlements. RevenueCat also provides aggregated subscription and purchase analytics to us. Training videos, strength results and calculator inputs are never sent to RevenueCat.
System permissions
- Photo or file access: the system picker provides only the training video you explicitly select.
- Add to photo library: used only when you choose to save an annotated analysis video.
You can change these permissions in iOS or Android Settings. Denying a permission affects only the related selection or export feature.
Retention and deletion
Training records stay on your device until you delete them in Power or uninstall the App. Files exported to Photos must be managed in the system Photos app.
Purchase records are retained by Apple or Google under their policies and by RevenueCat as needed to maintain entitlements, prevent fraud and provide purchase history. You may email us to request deletion of the RevenueCat customer record associated with your anonymous App User ID; Store transaction records may remain where required by the Store or law.
Children
Power is not designed for children and does not create child profiles. Minors should perform strength training with a guardian or qualified coach and should not treat calculator results as medical advice.
Changes to this policy
If Power materially changes how it handles data, we will update this page and the date above. New collection or uses will be explained and presented with any choices required by applicable rules.
Contact
For questions about this policy, local App data or permissions, email aaronx@knockdream.com.
Operator: Fuzhou KnockDream Technology Co., Ltd.