Terms of Use

Effective date: 17 May 2026 · Last updated: 17 May 2026

These Terms of Use ("Terms") form a binding agreement between you and The Trustee of Rubek Trust (ABN 88 620 073 413), trading as Callie, of Queensland, Australia ("Callie", "we", "us", "our"). They govern your access to and use of the Callie mobile application and any related websites, content and services (together, the "Service").

By downloading, installing, accessing or using the Service you agree to these Terms. If you do not agree, do not use the Service.

1. Eligibility

The Service is intended for users who are at least 16 years old. You must have legal capacity to enter into these Terms in your jurisdiction. You must not use the Service if you are pregnant or breastfeeding, are in recovery from or currently experiencing an eating disorder, or have any medical condition affected by nutrition or weight changes — except under the supervision of a qualified healthcare professional.

2. The Service

Callie is an informational and self-tracking tool that estimates calorie and macronutrient targets based on inputs you provide (including period dates, body metrics and food logs) and on general models of the menstrual cycle. Estimates are exactly that — estimates. Phase predictions, calorie targets and trend analyses are approximations and may not reflect your individual physiology.

3. AI-powered features

Some features of the Service use third-party artificial intelligence — currently Google's Gemini API — to interpret content you submit. This includes:

AI outputs are estimates generated by a probabilistic model. They may be inaccurate, incomplete, biased or out of date, and may sometimes produce results that look plausible but are wrong. You are responsible for reviewing AI outputs before relying on them, and you can edit values manually before saving. We make no warranty that AI outputs are accurate, fit for any particular purpose, or suitable for any medical, dietetic or therapeutic use. Do not submit content to AI features that you do not have the right to share, that depicts another identifiable person without their consent, or that is unlawful, harmful or harassing. We may rate-limit, restrict or remove AI features at any time without notice.

4. Health disclaimer — please read

Callie is not a medical device and does not provide medical, nutritional, psychological or any other professional advice. The Service is not intended to diagnose, treat, cure or prevent any disease or condition, and must not be relied on as a substitute for advice from a qualified healthcare professional.

You should consult a doctor or qualified clinician before making changes to your diet, exercise routine, supplements or any health-related behaviour. Never disregard professional medical advice or delay seeking it because of something you read or see in the Service. If you experience symptoms or distress, stop using the Service and seek qualified help.

5. Your account

You may need to create an account to use the Service. You are responsible for the accuracy of the information you provide, for keeping your login credentials secure, and for all activity that occurs under your account. Notify us immediately at appcallie@gmail.com if you suspect unauthorised use.

6. Subscriptions, billing and trials

7. Licence

Subject to your compliance with these Terms, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable licence to install and use the Service on devices you own or control, solely for your personal, non-commercial use.

8. Acceptable use

You agree not to: (a) reverse engineer, decompile or extract source code from the Service except to the extent permitted by law; (b) use the Service to harass, harm or impersonate others; (c) interfere with the Service or its security; (d) use the Service to develop a competing product; (e) scrape, mirror or resell the Service or its content; (f) use the Service for any unlawful purpose, or in any way that could damage, disable, overburden or impair the Service.

9. Your content and data

You retain ownership of the data you input ("User Content"). You grant us a worldwide, royalty-free licence to host, store, process and display User Content solely to operate, improve and secure the Service. You represent that you have the right to provide your User Content and that it does not violate the rights of any third party.

10. Intellectual property

All rights in the Service, including the name "Callie", the app, its design, code, logos, copy and brand elements, are owned by us or our licensors. Nothing in these Terms transfers those rights to you.

11. Apple-specific terms (iOS)

You acknowledge that these Terms are between you and Callie, not with Apple, and that Apple is not responsible for the Service or its content. Apple has no obligation to provide maintenance or support. In the event of any failure of the Service to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any); to the maximum extent permitted by law, Apple has no other warranty obligation. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

12. Third-party services

The Service may interoperate with third-party services (for example, Apple HealthKit, the App Store, Sign in with Apple, Sign in with Google, Google Firebase, the Google Gemini API, RevenueCat, PostHog, Vercel and Expo). Your use of those services is subject to their own terms. We are not responsible for third-party services, including their availability, accuracy, content or any outputs they produce.

13. Changes to the Service

We may add, modify, suspend or discontinue any part of the Service at any time, with or without notice. We may also impose limits on certain features or restrict access without liability.

14. Disclaimer of warranties

To the maximum extent permitted by law, the Service is provided "as is" and "as available", with all faults and without warranty of any kind, whether express, implied or statutory — including warranties of merchantability, fitness for a particular purpose, accuracy, reliability, non-infringement, or that the Service will be uninterrupted, secure, error-free or meet your requirements.

Nothing in these Terms excludes, restricts or modifies any consumer guarantee, right or remedy you may have under the Australian Consumer Law or other law that cannot lawfully be excluded.

15. Limitation of liability

To the maximum extent permitted by law, in no event will Callie, its trustee, beneficiaries, officers, contractors or licensors be liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for any loss of profits, revenue, goodwill, data, business opportunity or anticipated savings, arising out of or related to your use of the Service — even if advised of the possibility of such damages.

Where liability cannot be excluded but can be limited, our total aggregate liability to you for all claims arising out of or relating to these Terms or the Service is limited to the greater of (a) the total fees you paid us for the Service in the twelve (12) months immediately before the event giving rise to the claim, or (b) AUD $100.

Nothing in this clause limits liability that cannot be lawfully limited.

16. Indemnity

You agree to indemnify and hold harmless Callie and its trustee, beneficiaries, officers, contractors and licensors from and against any claims, liabilities, damages, losses and expenses (including reasonable legal fees) arising out of or related to (a) your use of the Service, (b) your breach of these Terms, (c) your User Content, or (d) your violation of any law or the rights of any third party.

17. Termination

You may stop using the Service at any time. We may suspend or terminate your access at any time, with or without notice, including if we believe you have breached these Terms or if continued provision would expose us to legal or operational risk. Clauses that by their nature should survive (including ss. 3, 4, 9, 10, 14–16, 18–20) will survive termination.

18. Governing law and jurisdiction

These Terms are governed by the laws of Queensland, Australia. You and we submit to the exclusive jurisdiction of the courts of Queensland and the courts hearing appeals from them, except that we may seek injunctive or equitable relief in any court of competent jurisdiction.

19. Changes to these Terms

We may update these Terms from time to time. If we make material changes, we will give reasonable notice in the app or by email. Your continued use of the Service after the effective date of the updated Terms constitutes acceptance of those changes.

20. General

If any provision of these Terms is found unenforceable, the remaining provisions remain in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms without our consent; we may assign them in connection with a corporate transaction. These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the Service.

21. Contact

The Trustee of Rubek Trust (ABN 88 620 073 413)
Queensland, Australia
appcallie@gmail.com