This Privacy Policy explains how Islet ("we", "us", "the app") collects, uses, and protects your information. Islet is a registered business name of JW Styles (QLD) Pty Ltd as trustee for the Tanmar Trust, contactable at info@islet.com.au.
Your account. When you create an account with an email address, we collect that email and the password you choose. Your password is never stored in readable form. Authentication is handled by our backend provider (Supabase), which stores only a secure hash of it. If you use Sign in with Apple, Apple shares your name and email with us (or a private relay email, if you choose to hide yours), and we keep a token from Apple so we can disconnect Islet from your Apple ID when you delete your account.
What you log. We store the health and fitness information you choose to enter, which may include your first name, age, sex, height, current weight, goal weight and goal date, activity level, measurements, and your daily logs of water, steps, food, protein, fibre, sleep and exercise (including photos you submit for AI-estimated nutrition). We also store your dietary preferences (ingredients you exclude, diet types) and your meal and activity plans.
Some features involve more sensitive health information, which is only collected if you turn the feature on:
Apple Health. If you connect Apple Health, Islet reads the types of data you allow (such as steps, weight, sleep, heart rate and blood glucose) to fill in your logs, and may write data you log in Islet back to Apple Health if you allow it. You choose which data types to share in the Health app and can turn access off at any time. Data from Apple Health is never used for advertising or marketing, never sold, and never shared with anyone except as needed to run the app for you.
Notifications. If you turn on reminders, we store a push notification ID for your device and your reminder settings so we can send the reminders you chose.
Subscriptions. If you subscribe to Islet Premium, payment is handled entirely by Apple through the App Store. We never receive or store your card details. We only receive your subscription status, through our subscription provider (RevenueCat).
What we don't collect. Islet does not collect your location or contacts, does not use advertising or analytics trackers, and does not track you across other apps or websites.
You can start using Islet without creating an account. If you choose "Continue without an account", we create an anonymous profile that has no email address or password, and your plan and logs are stored against it exactly as they would be for an account holder. You can add an email and password later in Me to back your data up and move it to a new phone. If you delete the app, or choose to sign in to a different account, data stored against an anonymous profile can no longer be reached. To keep things light, guests keep the last 60 days of logs and up to 3 progress photos, and an anonymous profile that hasn't been opened for 60 days is deleted automatically (unless it has a Premium subscription). Creating an account removes these limits. You can delete your data at any time from Me › Account.
We use the information above only to run the app for you: calculating your daily targets, storing your logs so they sync across your devices, showing your progress and insights, generating AI estimates or chat responses when you ask for them, sending the reminders you turned on, filtering recipes to match your preferences, and managing your subscription. We do not sell your data, and we do not use your health information for advertising.
Islet AI (the meal photo nutrition estimate, describing a meal in words, and the Islet AI assistant) is powered by Claude, made by Anthropic, a third-party AI provider based in the United States. Islet asks for your permission the first time you use any of these features, and you can turn it off at any time in Me › Legal & support › Islet AI. Nothing is sent to Anthropic unless you have allowed it.
What is sent. The photo or message you submit, plus a small summary of your own data so the answer fits you: today's calorie, protein, fibre and water totals against your goals, your current and goal weight, your preferred units and, only if you track a GLP-1 medication, the medication name, dose and recent side effects you logged. Your name and email address are not included.
How it is sent and used. Your content goes from the app to our secure backend (Supabase), which passes it to Anthropic over an encrypted connection solely to generate a reply for you. It is not used to train the provider's models under our agreement with them, is not sold, and is not used for advertising. We do not keep the photos you submit for AI estimates. The AI assistant conversation is kept in memory only and is cleared when you close the app. Anthropic is required to protect this information to a standard equal to the one described in this policy.
Islet never shows third-party advertising: no banner, pop-up or video ads, and nothing you have to wait to skip. From time to time we may feature clearly labelled partner offers, such as a discount for Islet Premium members on a product we think is useful. Partner offers are the same for everyone who sees them. We never choose them using your health information, and we never share your personal or health information with partners. If you use a partner's discount code or link, your purchase happens on the partner's own website under their privacy policy.
Your account and app data are stored with Supabase, a third-party database provider. Some of our service providers are based overseas, including in the United States, so your information may be stored or processed outside Australia. We only use providers who protect it to a standard consistent with the Australian Privacy Principles. Data is sent over encrypted connections (HTTPS). Some settings and a copy of today's numbers (for the Home Screen widget) are also kept on your device.
We do not share your personal or health information with third parties, except:
You can delete your account at any time in the app: go to Me, scroll to the bottom and tap Delete account. This permanently deletes your account, your logs and your progress photos, and disconnects Sign in with Apple if you used it. You can also ask us to do this by emailing info@islet.com.au. Deleting your account doesn't cancel an App Store subscription, which you manage in your Apple Account settings.
You can access and correct your data at any time from within the app, or by contacting us at info@islet.com.au. If you're in Australia, we handle your personal information in accordance with the Privacy Act 1988 (Cth) and the Australian Privacy Principles, including your right to access and correct your information and to complain if you think we've mishandled it (you can also complain to the Office of the Australian Information Commissioner). If you're in the UK, the EU or elsewhere, you may have additional rights under your local law, such as the right to get a copy of your data, restrict or object to certain processing, or lodge a complaint with your local regulator.
This app is not directed at children under 13 (or the minimum age required by your local law), and we do not knowingly collect information from children.
We may update this policy from time to time. Material changes will be reflected by updating the "Last updated" date above.
Questions about this policy or your data can be sent to info@islet.com.au.