Privacy Policy

Effective date: October 21, 2026
Last updated: October 25, 2026

This Privacy Policy explains how SparkFast Technologies LLC ("SparkFast", "we", "us" or "our") collects, uses, shares and protects personal information when you use the SparkFast mobile application (the "App"), our website at www.sparkfast.app (the "Website"), and related services (together, the "Services"). It also explains your rights and how to use them.

SparkFast Technologies LLC is the controller of your personal information. Our contact details are in Section 16.

Summary

• We do not sell your personal information, and we do not use your health data for advertising.
• Health data is collected only when you enter it or choose to connect a service such as Apple Health, Google Health Connect or Keto-Mojo. You can disconnect at any time.
• You decide what a coach can see. Nothing is shared with a coach unless you turn sharing on, and you can turn it off at any time.
• One feature uses AI: your personalised fasting plan. To write it, we send some of your questionnaire answers, without your name, email, age, weight or height, to our AI provider (Section 5).
• You can delete your account and data at any time in the App (Settings → Account → Delete account).

1. Information we collect

Information you give us

• Account information: your name, email address and password (stored only in encrypted form by our authentication provider), or the information Apple or Google share with us when you sign in with them.
• Profile and questionnaire answers: for example your goals, fasting experience, preferred fasting schedule, sex assigned at birth, date of birth, height, current weight, activity level, diet and dietary restrictions.
• Fasting and tracking data: fasts and eating windows, refeed sessions, hydration and electrolytes, weight and waist measurements, glucose and ketone readings, sleep, digestion and stool entries, custom trackers, notes, challenges, check-ins and achievements.
• Photos: a profile picture, if you add one.
• Feedback and support: messages and screenshots you send us, with your device type, operating system and App version.

Information from services you connect

• Apple Health (iPhone) or Google Health Connect (Android): only if you give permission, and only the data types you approve. The App can read weight, steps, sleep (time asleep, in bed, awake, and sleep stages), heart rate variability and blood glucose. The App does not write data to Apple Health or Health Connect.
• Keto-Mojo: if you connect your Keto-Mojo account, we receive your ketone and glucose meter readings.
• Sign in with Apple or Google: your name and email address, as the provider shares them.
• Purchases: Apple or Google tell us, through our subscription provider RevenueCat, whether you have an active subscription or trial, your plan and its renewal dates. We never receive your card or bank details.
• Coaches and referrals: if you join through a coach's invitation or a referral link, we record who invited you. On iPhone, the invite page saves your invite code on your phone's clipboard. The App checks the clipboard for that code only with your permission: iPhone asks you first. It uses only the invite code and ignores anything else on the clipboard.

Information collected automatically

• App usage and performance: the screens and features you use, App performance and crash reports, linked to a random app-instance identifier. Crash reports also include your SparkFast user ID, so that we can fix problems with your account.
• Device information: device model, operating system, App version, language, and a notification token so that we can send the notifications you turn on.
• Security: a check that requests come from a genuine copy of the App (Firebase App Check).
• Meta SDK: the App includes Meta's software development kit for an optional Facebook sign-in. It may send basic events, such as App installs and launches, with device information, to Meta.
• Website: cookies and similar technologies, as explained in our Cookie Policy.
• Invite pages: when you tap "Download SparkFast" on an invite page (go.sparkfast.app), we add one to a daily count of taps on iPhone or on Android. That count stores nothing about you: no cookie, no IP address and no invite code. In the App, we count how an invite arrived, for example through a link or a typed code, but not who sent it or who received it.

2. How we use your information, and our legal bases

We use your information to:

• Provide the Services (performance of our contract with you): create and secure your account, track your fasts, show your charts and progress, create your fasting plan, run challenges and achievements, send the reminders and notifications you turn on, restore your subscription, and give you support.
• Process your health data (your explicit consent): we use the health data you enter or connect only to provide the Services to you, and to produce anonymous totals that cannot identify you (see “Improve and protect the Services” below). You can withdraw consent at any time by deleting the data, disconnecting the service, or deleting your account. Withdrawal does not affect processing before it.
• Share data with your coach (your consent): only the data types you choose, as described in Section 6.
• Improve and protect the Services (our legitimate interests): understand how the App is used, fix errors, prevent fraud and abuse, and keep the Services secure. We use aggregated or de-identified information where we can. We also look at onboarding answers and subscription events (such as when a free trial starts or converts) only as anonymous totals — for example, how many users choose each goal — to understand our users and improve the Services. These totals never identify you, and small groups are not shown.
• Run our referral and coach programs (performance of contract with our partners, and our legitimate interests): record referrals and calculate commissions.
• Communicate with you (performance of contract, or your consent for marketing): service messages about your account, and marketing emails only if you sign up for them. You can unsubscribe at any time.
• Meet legal obligations (legal obligation): for example tax, accounting and responding to lawful requests.

We do not sell your personal information, use your health data for advertising or marketing, use it to decide your eligibility for credit, insurance or employment, or let our service providers use it for their own purposes.

3. Apple Health and Google Health Connect

Data we receive from Apple Health or Google Health Connect is used only to provide and improve the health and fitness features of the App that you use. In particular:

• we do not use it for advertising, and we do not sell it or give it to advertising platforms, data brokers or information resellers;
• we do not share it with third parties except our service providers that store and process it for us (Section 4), or when you ask us to share it with your coach;
• we do not use it to build profiles for any purpose other than the App's features; and
• people at SparkFast do not look at it unless you ask us for help, it is needed for security, or the law requires it.

The App's use of information received from Google Health Connect follows the Health Connect Permissions Policy, including its Limited Use requirements. You can change permissions at any time: on iPhone in Settings → Health → Data Access & Devices → SparkFast; on Android in the Health Connect app.

4. Who we share information with

We share personal information only as described here.

Service providers that process data for us under contracts that limit their use of it:

• Google (Firebase, Google Cloud and Google Workspace): hosting, database, file storage, sign-in, analytics, crash and performance reports, notifications, App security, and our email: feedback you send from the App arrives in our support mailbox.
• Anthropic: the AI model that writes your personalised plan (Section 5).
• RevenueCat: subscription status and purchase records.
• Klaviyo: sending our emails, and website sign-up forms.
• Stripe: commission payouts to coaches and ambassadors (not used for App purchases).
• Webflow: hosting the Website.
• Google Analytics: Website statistics.

Other parties:

• Your coach, only if you choose to share (Section 6).
• The person who invited you: a coach or ambassador who referred you can see that their referral joined or subscribed, so that their commission can be calculated. They do not see your health data through the referral.
• Apple and Google, which process your purchases under their own privacy policies, and Keto-Mojo and Meta, as described in Section 1.
• Legal and safety: when the law requires it, or when it is needed to protect the rights, property or safety of SparkFast, our users or others.
• Business transfers: if SparkFast is involved in a merger, acquisition or sale of assets, your information may be transferred. We will tell you before it becomes subject to a different privacy policy.

5. The AI-written plan

When you ask for your personalised plan, we send these questionnaire answers to Anthropic, PBC, which provides the Claude AI model: your goals, fasting experience, preferred fasting schedule and eating times, prolonged-fasting experience, the biological benefit you are interested in, sex assigned at birth, activity level, diet and dietary restrictions. We do not send your name, email address, date of birth, weight or height. Anthropic processes this information to return the plan to us. Under its commercial terms, Anthropic does not use it to train its models. The plan is general wellness information, not medical advice.

6. Sharing with a coach

If a coach invites you, the App asks whether you want to share and lets you choose what to share: fasting activity, and optionally weight and BMI, waist measurements, glucose, ketones, sleep and digestion. Coaches are independent professionals, not SparkFast employees. Their use of your information is their responsibility.

• If you say "Not now", nothing is shared, and the App works fully.
• You can change what you share, or stop sharing, at any time in the App. Your coach then no longer receives new data, and the health data they could see is removed from their view. They still see your name and the dates you shared.
• A coach who invited you may receive a commission if you subscribe. This never depends on whether you share data.

7. How long we keep information

• Account and health data: for as long as your account is active. When you delete your account, we delete it as described on our Data Deletion page.
• Kept after deletion: a deletion record that contains no name, email or health data; referral and commission records of the coach or ambassador who invited you, which no longer link to your name or email; and purchase records that Apple, Google and RevenueCat keep for tax and accounting.
• Analytics and crash data: kept for the periods set in Google's services, and then deleted automatically.
• Feedback: until it is no longer needed to deal with your message, or until you delete your account.

8. How we protect information

We use encryption in transit (HTTPS/TLS), encryption at rest by our cloud provider, access rules that let each user reach only their own data, App integrity checks, and limited staff access. No system is completely secure. If a breach affects your personal information, we will notify you and the authorities as the law requires.

9. International transfers

SparkFast is based in the United States, and our database is stored in data centers in the United States. If you live outside the United States, your information is transferred to and processed in the United States. For transfers from the UK, the European Economic Area and Switzerland, we rely on the safeguards the law allows, such as the European Commission's Standard Contractual Clauses, the UK International Data Transfer Addendum, or the provider's certification under the EU-U.S. Data Privacy Framework and its UK and Swiss extensions.

10. Your rights and choices

Depending on where you live, you may have the right to:

• access your personal information and receive a copy, including in a portable format;
• correct inaccurate information;
• delete your information;
• restrict or object to some processing, including processing based on our legitimate interests;
• withdraw consent at any time, without affecting earlier processing;
• opt out of the sale of personal information or targeted advertising (we do neither); and
• not be discriminated against for using these rights.

Most data can be viewed and corrected in the App, and you can delete your account in Settings → Account → Delete account. For anything else, email support@sparkfast.app from the email address of your account. We may need to confirm your identity. We will answer within the time the law requires, and in any case within 30 days. If you have an authorized agent, they may contact us for you with proof of their authority.

If we decline your request, you can appeal by replying to our answer; we will respond within the time the law requires. You also have the right to complain to a data protection authority: in the UK, the Information Commissioner's Office (ico.org.uk); in the EU, the authority in your country; in Brazil, the ANPD.

Notifications and emails: you can turn notifications off in the App or your device settings, and unsubscribe from marketing emails with the link in each email.

11. Consumer health data (U.S. state laws)

Some U.S. states, including Washington, Nevada and Connecticut, have specific laws for consumer health data. Under those laws:

• What we collect: the health data described in Section 1 (for example fasting, weight, waist, glucose, ketone, sleep, heart rate variability, steps and digestion data, and questionnaire answers about your goals and diet).
• Why: only to provide the Services you request, as described in Sections 2 and 3.
• Sources: you, and the services you choose to connect.
• Who receives it: the service providers listed in Section 4, and your coach if you choose to share.
• Your rights: to confirm whether we collect your consumer health data, to access it, to get a list of third parties that received it, to withdraw consent and to have it deleted. Use them as described in Section 10.

We collect and share consumer health data only with your consent or as needed to provide the Services you ask for, and we never sell it.

12. Children

The Services are only for people aged 18 or over. We do not knowingly collect information from anyone under 18. If you believe a person under 18 has given us information, contact us and we will delete it.

13. Coaches and ambassadors

If you join SparkFast as a coach or ambassador, we also process your name, email address, the details of the people you invite, your commission and payout history, and, for payouts, the information you give Stripe. Stripe collects your bank and tax details directly under its own privacy policy. We do not receive your full bank details.

14. Third-party sites and services

The Services link to websites and services we do not control, such as research publications, app stores and Keto-Mojo. Their privacy practices are governed by their own policies.

15. Changes to this policy

We may update this Privacy Policy. If we make a material change, we will tell you in the App or by email before it takes effect, and we will update the "Last updated" date above. Where the law requires your consent to a change, we will ask for it.

16. Contact us

SparkFast Technologies LLC
P.O. Box 4343
Clearwater, FL 33758
United States
Email: support@sparkfast.app

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