Privacy Policy

Last updated: 23 September 2026

Trolly ("we", "us", "our") provides this app and website. This Privacy Policy explains what information the Trolly mobile app and website (the "Service") collect, how we use it, and the choices you have. We comply with the New Zealand Privacy Act 2020.

1. Information we collect

Information you provide

• Account details - if you create an account, your email address and authentication details, managed securely through Google Firebase Authentication.
• Shopping lists & preferences - the items you save, your selected stores, and similar in-app settings.
• Contact messages - anything you send us by email for support.

Information collected automatically

• Usage & device data - basic, non-identifying information such as app version, device type, and crash diagnostics, used to keep the app working.

Trolly does not collect payment details. We do not sell your personal information.

2. How we use your information

• To provide and operate the Service (e.g. sync your account and shopping lists).
• To improve features, fix bugs, and maintain reliability and security.
• To respond to your support requests.

3. Grocery price data

Prices shown in Trolly are gathered from publicly available supermarket sources and are provided for general comparison only. They may not always be current or accurate; always confirm the price in-store. Trolly is an independent service and is not affiliated with, endorsed by, or sponsored by any supermarket or retailer.

4. How we share information

We share information only with service providers that help us run the Service, including:

• Google Firebase (authentication and data sync) - see Google's Privacy Policy.
• Google AdSense and Google Analytics (advertising and website measurement on trolly.co.nz) - see Google's Privacy Policy.
• Cloud hosting providers that store our data securely.

We may also disclose information if required by law.

Some of these providers, including Google, store and process information on servers outside New Zealand, including in the United States. Where we send personal information overseas, we take reasonable steps to ensure it is protected by safeguards comparable to those under the New Zealand Privacy Act 2020, as required by Information Privacy Principle 12.

5. Cookies, analytics and advertising

The Trolly website (trolly.co.nz) and the Trolly app both use cookies, advertising identifiers and similar technologies.

• Analytics. We use Google Analytics, loaded through Google Tag Manager, to understand how many people visit, which pages they read and how the site performs. This tells us things like "300 people looked at the butter price page this week". We do not use it to identify you personally.
• Advertising on the website. We use Google AdSense on our price comparison pages. Google and its partners may use cookies to serve ads based on your previous visits to this and other websites.
• Advertising in the app. The free version of the Trolly app shows ads supplied by Google AdMob, and occasionally ads we sell directly. Google may use your device's advertising identifier to show more relevant ads. On iOS we ask your permission before any tracking, and you can decline and still use the whole app. Trolly Pro removes ads entirely.
• Advertising never affects prices or rankings. Which store Trolly shows as cheapest is calculated only from the prices we collect. No advertiser can pay to change it, and every ad is labelled as an ad.

You can opt out of personalised advertising in Google Ad Settings, or opt out of third-party vendor cookies at aboutads.info. You can also block or delete cookies in your browser settings. Blocking them will not stop you using the site.

Third parties that may set cookies on this site are listed in Google's how Google uses information from sites that use its services page.

6. Data retention

We keep your information for as long as your account is active or as needed to provide the Service. You can ask us to delete your account and associated data at any time (see below).

7. Your rights & deleting your data

You have the right to access, correct, or delete your personal information. To request account and data deletion, visit our Delete Account page or email us. We will action verified requests within a reasonable time.

8. Children

Trolly is not directed at children under 13, and we do not knowingly collect personal information from them.

9. Security

We use industry-standard measures to protect your information, but no method of transmission or storage is completely secure.

If a privacy breach happens that is likely to cause serious harm, we will notify the Office of the Privacy Commissioner and the people affected as soon as practicable, as required by the Privacy Act 2020.

10. Changes to this policy

We may update this policy from time to time. Material changes will be posted on this page with a new "Last updated" date.

11. Contact us

Questions about privacy? Email support@trolly.co.nz. If you are not satisfied with our response, you can contact the Office of the Privacy Commissioner at privacy.org.nz.