Privacy Policy

Last updated: September 27, 2026

1. Who is responsible

KinearFit is published by Juan Camilo Renjifo Corrales, an individual based in Colombia, under the trade name LuckSort Labs. LuckSort Labs is a brand, not a registered company. He is responsible for the personal data described in this policy and handles all privacy requests.

Contact: [email protected]

2. How the camera works

KinearFit uses your phone's front camera to see your strikes. Everything happens inside your phone, with software that ships with the app. No server receives images.

• The camera video never leaves your phone.
• The app does not record or store video at any time.
• To detect strikes, the app analyzes your body position in each frame. That information is used on the spot and discarded: it is not stored, not sent anywhere and not used to identify you. The app does not use facial recognition.

End-of-session photo

At the end of a session, the app shows a photo of you. It is kept only in your phone's memory while that screen is open. When you close it, the camera turns off and the photo is discarded. It is written to your phone's storage only if you tap save or share, and it is never uploaded to any server. If you share it, it goes to the app you choose, and that app's policy applies.

3. What is stored on your phone today

The current version has no accounts and no server of ours. The app saves the following only on your phone:

• The name or nickname you type, if you want to (optional, used only to greet you).
• Handedness (right or left) and language and sound preferences.
• Statistics: strikes, time, estimated calories, streak and level.
• Badges and your last session.

None of this is sent to us or anyone else. We can't see it or recover it. If you uninstall the app or clear its data, it is deleted.

4. Purchases and subscriptions

Payments are processed by Google Play or the App Store. We never receive or store card numbers or bank details.

To know whether your subscription is active, the app uses RevenueCat, a subscription service. RevenueCat receives an anonymous identifier created by the app, your purchase and subscription history, and technical data such as your country and currency. This data is not linked to your name or email.

5. When accounts arrive (not available yet)

We plan to add optional accounts. The whole app will keep working without signing up; an account will only let you keep your progress when you change phones. We will update this policy before accounts are launched. From then on:

• You will be able to sign in with Google or with email and password.
• Our server will store your email and account ID, your name or nickname and preferences, XP, level, streak, badges, session history (strikes, time and estimated calories) and your subscription status.
• We will never store video, camera images, body position data or any biometric data.
• You will be able to delete your account from the app or by following the steps on our support page. Deleting it removes your data from our server.

6. Permissions

• Camera: required to train. The app asks for it, with an explanation, the first time you train, and uses it only while you train or practice.
• Save to gallery: only if you choose to save your end-of-session photo.

The app does not use your location, contacts or microphone, and does not send push notifications.

7. What we don't do

No advertising, no trackers and no analytics. We don't sell or rent your data, and we don't build behavioral profiles.

8. Service providers

• Google Play and the App Store: process payments under their own privacy policies.
• RevenueCat: subscription status.
• Cloudflare: hosts this website and forwards email sent to our support address.
• A server hosting provider, once accounts exist.

Some of these providers operate in the United States or other countries. When data is transferred abroad, we rely on the safeguards required by applicable law.

9. This website

kinearfit.com does not use cookies, analytics or third-party resources. Our hosting provider processes technical data, such as your IP address, only to deliver the site and protect it from attacks.

10. Support emails

If you write to us, we receive your email address and whatever you include in your message. We use it only to answer you, and keep it only as long as needed to resolve your request.

11. Age

KinearFit is for adults aged 18 and over. It is not directed at minors, and we do not knowingly collect data from minors. If we learn that we hold data from a minor, we delete it.

12. Why we use data

We use data to provide the app and your subscription (performance of a contract), to answer your requests (your request and our legitimate interest in providing support) and to meet legal obligations such as accounting. Where the law requires your consent, we ask for it.

13. Your rights

Depending on where you live, you can ask to access, correct, update or delete your data, object to or restrict its use, receive a copy of it and withdraw your consent. Write to [email protected]; we answer within 10 business days.

• Data on your phone: you control it. Uninstalling the app or clearing its data deletes it.
• Purchase data held by RevenueCat: include the order number from your store receipt (on Google Play it starts with “GPA.”) so we can find it.

You can also file a complaint with a data protection authority: in Colombia, the Superintendencia de Industria y Comercio (SIC); in Brazil, the Autoridade Nacional de Proteção de Dados (ANPD); in the European Union, the authority in your country.

14. Colombian law

As a data controller in Colombia, we follow Law 1581 of 2012 and its regulations. Requests, queries and complaints are handled by the person responsible (section 1) at [email protected], under the procedure and deadlines of that law. This policy is in force from its publication, and our databases will be kept while the app is available.

15. Changes

If we change this policy, we will publish the new version here with its date. If the change is significant, we will also let you know in the app.