By using wbal.io you agree to these terms. wbal.io is operated as a sole trader based in England. If you have questions, use the contact page.
1. The service
wbal.io provides a browser-based tool for analysing W′ balance from cycling power data. It includes file parsing, CP determination, W′bal computation, and recovery rate modelling. The free tier and Pro tier differ in the features available, as described on the pricing page.
2. Your account
- You must provide an accurate email address when registering.
- You are responsible for keeping your password secure.
- You may not share your account or use it on behalf of others under the Free or Pro plans. The Institutional plan covers up to 20 users.
- You must be at least 16 years old to create an account.
3. Subscriptions and payments
- Pro subscriptions are billed monthly or annually via Stripe.
- You may cancel at any time. Access continues until the end of the current billing period. No refunds are issued for partial periods unless required by law.
- We reserve the right to change pricing with 30 days' notice to existing subscribers.
- Failed payments may result in downgrade to the Free tier after a short grace period.
4. Acceptable use
You agree not to:
- Attempt to reverse engineer, scrape, or systematically extract data from the service.
- Use the service to process data you do not have the right to use.
- Attempt to circumvent access controls or rate limits.
- Upload malicious files or attempt to exploit the file parser.
5. Your data
You retain ownership of any power files or data you upload. By uploading a file you grant us a temporary licence to process it for the purpose of providing the service. We do not claim any rights over your training data. See the Privacy Policy for details of how data is handled.
6. Disclaimer
wbal.io provides analytical tools based on published scientific models. The outputs are intended to support informed decision-making by coaches and athletes, not to replace professional advice. We make no guarantee as to the accuracy of W′bal estimates for any specific individual. Use the outputs as one source of information, not as the sole basis for training or competition decisions.
The service is provided "as is" without warranty of any kind. We do not guarantee uninterrupted availability.
7. Liability
To the maximum extent permitted by English law, our liability to you in connection with the service is limited to the amount you paid us in the 12 months preceding the claim. We are not liable for any indirect or consequential losses.
Nothing in these terms limits liability for death or personal injury caused by negligence, or for fraud.
8. Termination
We may suspend or terminate your account if you breach these terms, with notice where reasonably practicable. You may delete your account at any time via your account settings or by contacting us.
9. Changes to these terms
We may update these terms as the service evolves. Material changes will be notified by email. Continued use after the effective date constitutes acceptance.
10. Governing law
These terms are governed by the laws of England and Wales. Any disputes will be subject to the exclusive jurisdiction of the courts of England and Wales.