Terms of Service

Last updated: March 2026

1. Acceptance of Terms

By using Dossi, you agree to these Terms of Service. If you don't agree, do not use Dossi.

2. What Dossi Is

Dossi is:

• Open-source software: Released under the Apache 2.0 license. Source code is publicly available for review and modification.
• A DIY project: Created by and for the Type 1 Diabetes community. Not developed by a medical device company.
• Not FDA approved or cleared: Dossi is NOT a medical device. It has not undergone FDA review or approval. Use is entirely at your own risk.
• Educational: Provided to help users learn about insulin delivery algorithms and personalized diabetes management.

3. No Warranty

Dossi is provided "AS IS" without any warranty of any kind:

• NO WARRANTY that Dossi will work without errors or interruptions
• NO WARRANTY that Dossi is safe for any particular use
• NO WARRANTY of fitness for a particular purpose
• NO WARRANTY that Dossi will prevent low blood sugar or hypoglycemic episodes
• NO WARRANTY that Dossi will prevent high blood sugar or hyperglycemic episodes

Bugs, errors, and failures are possible. Software can malfunction. Hardware can fail. Networks can drop. Always have a backup manual insulin delivery method.

4. User Responsibility

By using Dossi, you acknowledge and accept that:

• You understand the algorithm: You've reviewed how Dossi calculates insulin and its safety features.
• You're trained: You know how to use your Omnipod and CGM independently without Dossi.
• You monitor actively: You check your glucose regularly and never rely solely on Dossi recommendations.
• You make final decisions: You review every insulin recommendation. You make the final decision whether to deliver insulin.
• You have backup methods: You keep manual injection supplies or other insulin delivery methods available.
• You report problems: If Dossi behaves unexpectedly, you'll immediately revert to manual insulin management.

5. No Liability

To the fullest extent permitted by law:

• Dossi contributors and maintainers are not liable for any harm, injury, or loss resulting from use of Dossi, including but not limited to:
  • Hypoglycemic episodes (low blood sugar)
  • Hyperglycemic episodes (high blood sugar)
  • Diabetic ketoacidosis (DKA)
  • Data loss or corruption
  • Incorrect insulin calculations
  • Device malfunction
  • Any other direct, indirect, or consequential damages
• This applies even if Dossi contributors were advised of the possibility of such harm.

You assume all risk of using Dossi.

6. Medical Disclaimer

Dossi is not a medical device and does not provide medical advice. Recommendations from Dossi are suggestions only. They are not medical treatment.

Before using Dossi, you should:

• Consult with your endocrinologist or diabetes educator
• Understand your insulin-to-carb ratio and insulin sensitivity factor
• Have a plan for managing your diabetes without Dossi
• Have emergency supplies (glucose tablets, glucagon, etc.)

Dossi is not a substitute for professional medical judgment. Doctors know your medical history. They can assess risks. Dossi cannot.

7. Safety & Monitoring

If Dossi fails to calculate insulin correctly, delivers incorrect doses, or otherwise malfunctions:

• You may experience serious medical complications
• You are responsible for monitoring and responding
• You should revert to manual insulin management immediately
• You should seek emergency medical care if needed

Dossi includes safety features (dose limits, hypo detection, etc.), but these are not infallible. Always verify recommendations before delivery.

8. Intellectual Property

Dossi is open-source under the Apache 2.0 license.

• You may use, modify, and distribute Dossi as permitted by the Apache 2.0 license
• You must maintain attribution and include the license with any distribution
• You may not claim ownership of Dossi itself

Trademarks: "Dossi" is a trademark. You may not use it to endorse or market products without permission.

9. Modifications

If you modify Dossi:

• You're responsible for testing and validating your changes
• You're liable for any harm caused by your modifications
• You must not misrepresent your version as the original Dossi
• Contributors are not responsible for your modifications

10. Data & Privacy

See our Privacy Policy for details on how Dossi handles your health data. By using Dossi, you agree to that policy.

11. Acceptable Use

You agree not to:

• Use Dossi to practice medicine or provide medical advice to others
• Distribute Dossi as a "medical device" or FDA-approved product
• Use Dossi for commercial purposes without following the Apache 2.0 license
• Reverse-engineer Dossi to circumvent its safety features
• Use Dossi knowing you're not capable of managing your diabetes independently

12. Availability & Support

Dossi is provided as-is by volunteers. There is no guarantee of:

• Continued availability or support
• Bug fixes or security updates
• Compatibility with future iOS versions
• Customer service or help desk support

Dossi may be discontinued at any time. Users are responsible for ensuring they have alternatives for diabetes management.

13. Limitation of Liability

In no event shall Dossi contributors' total liability exceed $0 (zero dollars). This is not a limitation of your rights as a consumer, but reflects that Dossi is provided at no charge.

14. Indemnification

You agree to indemnify (defend and hold harmless) Dossi contributors from any claims, damages, or liabilities arising from your use of Dossi, including claims that Dossi harmed you or violated someone else's rights.

15. Governing Law

These Terms are governed by the laws of the jurisdiction where you reside. Any disputes shall be resolved in the courts of that jurisdiction.

16. Severability

If any part of these Terms is found invalid, the rest remains in effect.

17. Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and Dossi contributors regarding your use of Dossi.

18. Changes to Terms

Dossi may update these Terms. Changes will be posted here with a new "last updated" date. Your continued use of Dossi after changes constitutes acceptance of the new Terms.

19. Contact

Questions about these Terms? Contact us at team@hellodossi.com.