Terms of Service

Version: v1.0 (overseas / English) Effective date: 2026-06-02 Last updated: 2026-06-02 Scope: These Terms govern your use of the "Race Log" service (web at carting.hao456.pro, Android app distributed via Google Play, iOS app distributed via the App Store).

These Terms are written for an international audience. If you are a user located in mainland China, please refer to the simplified Chinese version (carting.hao456.pro/terms) instead.

1. Acceptance of Terms

1.1 These Terms of Service ("Terms") constitute a legally binding agreement between you ("user", "you") and the operator of Race Log ("Race Log", "we", "us", "our").

1.2 By creating an account, signing in, or otherwise using the Service in any way, you acknowledge that you have read, understood, and agreed to these Terms in their entirety. If you do not agree, please stop using the Service immediately.

1.3 If you use the Service through Google Play or the Apple App Store, you also agree to the Google Play Terms of Service and Apple Media Services Terms and Conditions respectively, in addition to these Terms. In the event of a conflict between these Terms and the store's terms regarding download, payment, or refunds, the store's terms govern that subject matter.

1.4 We may revise these Terms from time to time. Material revisions will be notified within the App, by email, or by a prominent notice on the website at least 7 days before they take effect. Continued use of the Service after revisions take effect constitutes acceptance of the revised Terms.

2. Service Description

2.1 Race Log is a data analysis and training-aid tool for karting and motorsport enthusiasts. Core features include:

• Uploading karting / motorsport telemetry files (e.g., .vbo format) for analysis
• Uploading GoPro / DJI action camera videos and extracting GPS data locally on your device
• Generating visual reports covering lap times, racing line, braking points, sector analysis, and more
• AI coach commentary on your driving performance
• Producing videos with overlaid data layers (speedometer, lap time, etc.)
• Comparing lap times with other users on the same track (when sessions are made public)

2.2 The Service does not constitute, and shall not be construed as:

• Professional motorsport training or certification
• Any official acknowledgment of competition results
• A safety guarantee with respect to driving activity
• A performance warranty for any vehicle or equipment

3. Account Registration and Management

3.1 You shall provide accurate information when creating an account and shall safeguard your account credentials.

3.2 Your account is for your personal use only and may not be transferred, leased, sold, or shared. You are responsible for any loss resulting from unauthorized account use.

3.3 If you suspect your account has been compromised, notify us promptly at 207319@qq.com.

3.4 We reserve the right to issue warnings, restrict features, suspend, or terminate any account that violates these Terms or applicable law.

4. Minors

4.1 The Service is not directed at children under 13 (US/most regions) or under 16 (EU; thresholds vary by member state and we apply the most protective standard). Children below the applicable age threshold may not register or use the Service.

4.2 For users between the applicable age threshold and 18, use of the Service must be authorized by a parent or legal guardian. The guardian's consent is deemed acceptance of these Terms in full.

4.3 A parent or legal guardian may contact us at 207319@qq.com to delete a minor's account if it was registered without consent.

4.4 When operating a kart, minors must:

• Obtain permission from track marshals or a qualified coach
• Wear all required safety gear conforming to applicable standards
• Stay within track-designated safe zones and speed limits
• Be supervised by a guardian on tracks where this is required

4.5 We recommend that all users — and minors in particular — treat the Service's analysis output as an aid only, and not pursue lap-time improvements through risky driving behavior.

5. User Conduct and Limitation of Liability

5.1 You agree NOT to use the Service to:

• Upload false, fabricated, or another person's data without authorization
• Upload illegal, violent, sexually explicit, or otherwise objectionable content
• Attack, reverse-engineer, decompile, scrape, or otherwise compromise the Service
• Post unlawful or personally abusive content in public comments or feedback
• Use the Service for any commercial purpose without our prior written authorization

5.2 When using the Service in connection with kart or motorsport driving:

• You assume all risks associated with driving, including bodily injury and property damage
• Our lap-time analysis, line recommendations, and AI coach commentary are for training reference only and do not substitute for in-person, qualified coaching
• You shall not exceed track safety rules in reliance on the Service's recommendations (e.g., attempting speeds substantially beyond your skill level)
• We are not liable for any consequence arising from driving decisions you make in reliance on the Service

5.3 We are not liable for service interruptions or losses arising from:

• Force majeure events (natural disasters, network outages, government action)
• Failures or actions of third-party providers (cloud providers, app stores, payment processors)
• Your device malfunction, network problems, or improper operation
• Errors in the data you upload that propagate into the analysis output

5.4 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, our total aggregate liability to you for any claim arising out of or related to the Service shall not exceed the greater of (i) the amount you paid us for the Service in the 12 months preceding the claim, or (ii) US$50. The Service is currently provided free of charge.

5.5 NO WARRANTY — The Service is provided "AS IS" and "AS AVAILABLE" without warranties of any kind, whether express, implied, statutory, or otherwise, including any implied warranties of merchantability, fitness for a particular purpose, title, or non-infringement, to the maximum extent permitted by applicable law. Some jurisdictions do not allow exclusion of implied warranties; in those jurisdictions, the duration of any implied warranty is limited to the minimum permitted period.

6. User-Uploaded Content

6.1 You retain ownership of all data you upload to the Service (VBO files, GPS data extracted from videos, notes, etc.).

6.2 You grant us the rights necessary to provide the Service:

• To store, process, and display your uploaded data
• To use it to generate your personal analysis reports
• To display data from sessions you have explicitly marked as public to other users

6.3 You also grant (each is optional, opt-out available in settings):

• Use of anonymized, aggregated data to improve the Service's algorithms
• Use of anonymized, aggregated data to train AI coach models
• Use of public sessions in marketing materials or race coverage, with prior notice to you

6.4 You warrant that the data you upload is lawfully yours and does not infringe any third party's rights. You are solely responsible for any dispute arising from content you upload.

6.5 We may remove content that violates applicable law, these Terms, or generally accepted standards, and may suspend the responsible account.

7. Intellectual Property

7.1 All original Service content — interface design, report layouts, AI coach voice and copy, algorithms, and so on — is owned by us or our licensors.

7.2 You may not copy, modify, distribute, or commercially exploit any part of the Service without our prior written authorization, except as permitted by these Terms or applicable law.

7.3 Open-source components used in the Service (e.g., Plotly, Next.js, Capacitor) are governed by their respective open-source licenses.

8. Pricing, Payment, and Refunds

8.1 The Service is currently provided free of charge.

8.2 We reserve the right to introduce paid features in the future (e.g., Pro membership, professional template packs). Specific rules for any paid features will be published before they become effective.

8.3 If we introduce paid features, the availability of features you currently use free of charge will not be affected.

8.4 Payment processing and refunds for any future paid features will be handled by the applicable app store:

• Android (Google Play): Purchases are processed via Google Play Billing. Refund requests are submitted through Google Play. Refer to Google's refund policy at play.google.com/refund. You typically have 48 hours from purchase to request a self-service refund via Play Store; after 48 hours, contact us at 207319@qq.com and we will work with Google to evaluate the request.
• iOS (Apple App Store): Purchases are processed via Apple's in-app purchase system. Refunds are handled by Apple via reportaproblem.apple.com.
• Web: If we offer web-based purchases in the future, refund policies will be published with the offering.

9. Privacy

The processing of your personal information is governed by our Privacy Policy. Please read it carefully.

10. Third-Party Services

The Service integrates the following third-party processors. Detailed processing rules and the privacy-policy links are documented in the Privacy Policy §6 and the Personal Information Collection and Third-Party Sharing List:

By using the Service, you consent to the processing of relevant information by the above third parties for the purposes stated.

11. Service Availability and Changes

11.1 We strive to make the Service available continuously but do not guarantee uninterrupted operation. The Service may be temporarily unavailable due to maintenance, upgrades, third-party provider failures, or other reasons.

11.2 We may, at our discretion, modify, suspend, or discontinue parts of the Service. For material changes that materially affect feature availability, we will provide reasonable advance notice (at least 30 days where feasible).

11.3 The Service is offered worldwide except in jurisdictions where (i) we are prohibited by applicable export-control, sanctions, or other law from offering the Service, or (ii) we determine that operating the Service is not commercially practical.

12. Termination

12.1 You may stop using and terminate the Service at any time by deleting your account. Account deletion options are described in the Privacy Policy §13; once you confirm deletion, your data is handled according to the 7-day soft-delete and permanent-deletion process described there.

12.2 We may suspend or terminate your access to the Service if:

• You materially breach these Terms
• We are required to do so by applicable law or order of a court or regulator
• We discontinue the Service entirely (with at least 30 days' prior notice where feasible)

12.3 Termination does not affect rights and obligations that accrued prior to termination, nor does it affect provisions that by their nature should survive termination (e.g., warranty disclaimers, limitations of liability, dispute-resolution, governing law).

13. Governing Law and Dispute Resolution

13.1 Governing law. These Terms are governed by and construed in accordance with the laws of the jurisdiction where you primarily reside, without regard to its conflict-of-laws principles. Where mandatory consumer-protection laws of your country of residence grant you stronger protections, those laws apply notwithstanding this clause.

13.2 Informal resolution first. Before initiating any formal dispute-resolution process, you and we agree to attempt in good faith to resolve any dispute through written negotiation. Send a written notice describing the dispute to 207319@qq.com; we will respond within 30 days.

13.3 Arbitration. If informal resolution fails within 60 days of the written notice, any dispute, claim, or controversy arising out of or relating to these Terms or the Service shall be finally settled by binding arbitration, administered by an internationally recognized arbitration institution mutually agreed upon by the parties (e.g., the Hong Kong International Arbitration Centre, the Singapore International Arbitration Centre, or the International Chamber of Commerce). The arbitration shall be conducted in English, by a sole arbitrator, with the seat of arbitration in the institution's default seat unless the parties agree otherwise. The arbitral award shall be final and binding on the parties.

13.4 Class-action waiver. To the maximum extent permitted by applicable law, you and we each agree that disputes will be resolved on an individual basis and not as a class, collective, or representative action. If a court determines that this class-action waiver is unenforceable in a particular case, the relevant claim shall be litigated in court rather than arbitrated, but the remaining provisions of this section continue to apply.

13.5 Exception — small claims and equitable relief. Either party may bring an action in a small-claims court for a qualifying individual dispute, or seek injunctive or other equitable relief in any court of competent jurisdiction to prevent actual or threatened infringement of intellectual property or confidentiality rights.

13.6 Severability. If any provision of these Terms is found unenforceable, the remaining provisions remain in full effect.

13.7 No waiver. Our failure or delay to exercise any right under these Terms does not constitute a waiver of that right.

14. Miscellaneous

14.1 Section headings are for convenience only and do not affect the interpretation of any provision.

14.2 These Terms, together with the Privacy Policy and any policies referenced herein, constitute the entire agreement between you and us regarding the Service and supersede all prior agreements, oral or written.

14.3 If any provision of these Terms conflicts with applicable mandatory law in your jurisdiction, that provision will be reformed to the minimum extent necessary to comply with the law, and the remainder of these Terms will remain in effect.

14.4 We may assign these Terms in connection with a merger, acquisition, reorganization, or sale of assets. You may not assign these Terms without our prior written consent.

15. Contact Us

Operator: Wang Yufeng (individual) Country of registration: China Service primary infrastructure region: United States