Effective date: 17 June 2026
Savo is a food-allergen scanning app made by Jahangir Erfan ("we", "us"). This policy explains what data the app handles and why. The short version: your allergen profile and scan history stay on your device, and we collect as little as possible.
The following never leaves your phone and is deleted when you delete the app:
Subscriptions are processed by Apple. We use RevenueCat to manage subscription status, identified only by a random, anonymous ID generated on your device. We never see your payment details, name, or Apple ID.
We use PostHog (hosted in the EU) to understand how the app is used (for example which screens are opened and whether scans succeed) so we can improve it. Analytics events are tied to the same random anonymous ID, not to your identity. The Savo app itself contains no advertising trackers, and we never sell your data.
Our marketing website (this site) uses the Meta (Facebook) advertising pixel to measure how our ads perform and to show Savo to relevant people on Facebook and Instagram. When you visit these pages, the pixel sets cookies and shares limited browsing data — such as the pages you view, your IP address and a browser identifier — with Meta Platforms, Inc. in the United States, acting as our advertising partner. This applies only to the website; the Savo app itself contains no advertising trackers. You can limit this kind of tracking in your Facebook and Instagram ad settings, and on iOS through App Tracking Transparency.
These pages also use our own EU-hosted analytics (PostHog) to understand how visitors use the site — for example page views, how far you scroll, and which links you click — so we can improve it. This activity is tied to a random identifier, not to your identity, and is not used for advertising.
We do not sell your data, and the Savo app shows no ads.
Where UK/EU data-protection law applies: we process barcode lookups, label photos, and subscription status because they are necessary to provide the service you request (performance of a contract), and anonymous analytics under our legitimate interest in improving the app.
Savo is an aid for checking food labels. It is not medical advice and not a guarantee. Product data can be incomplete or out of date and ingredients change. Always read the physical label and consult a healthcare professional about your allergies.
Savo is not directed at children under 13, and we do not knowingly collect personal data from them.
Because your profile and history live only on your device, you can view, change, or erase them directly in the app, or remove everything by deleting the app. For anything else, including questions about analytics data or this policy, contact us and we will help.
If we change this policy, we will update this page and the effective date above.
Jahangir Erfan: support@jerfan.co.uk