Your data, plainly

Last updated October 1, 2026

What we collect and why

Your ListSync account

When you sign in with Apple or Google we receive your email address and, if you share it, your name. We use them to identify your account, sync your data between your devices and reply to you.

Your listings

The listings you create (titles, descriptions, prices, categories, photos, which marketplaces they're on, and sales you record) are stored on your device and synced to your ListSync account so they appear on your other devices. Your profile settings (store name, ZIP code, listing text, presets) sync the same way.

Photos and text sent to AI

To write a listing, check prices, sort photos into items or answer a question in the Assistant or Help, ListSync sends the relevant photos and text to Anthropic's Claude AI through our server. Anthropic processes them to produce the reply and does not use them to train its models. ListSync asks for your permission before sending anything to the AI, and you can turn AI features off any time in Profile → AI features. A random device identifier is used to apply a daily usage limit.

Marketplace logins

You log into each marketplace inside the app, directly on that marketplace's own website. Your passwords go only to that marketplace. The login is kept on your device so ListSync can post and read buyer messages for you; it is not sent to our servers.

Buyer messages

If you use the Inbox, ListSync reads your buyer conversations on your device and keeps a copy of the chats you open on your device, so they load quickly next time.

Messenger chats PIN

Facebook asks for your Messenger chats PIN before it shows end-to-end encrypted chats. If you choose to save it, ListSync keeps it in your device's secure Keychain (it isn't included in backups or synced) and enters it only into Facebook's own PIN box. It is never sent to our servers or to the AI. You can remove it any time in Profile, and it's erased if you delete your account or switch ListSync accounts on that device.

Ship-from address

If you add a ship-from address, it stays on your device (it isn't synced to our servers). ListSync enters it only on a marketplace that asks where you ship from, such as Grailed or Depop, when you post there. While you type the street address, what you type is sent to Apple Maps to suggest matching addresses, the same as searching in the Maps app; ListSync doesn't receive it. Your address is never sent to the AI.

Facebook groups and your own listings

If you pick Facebook groups, ListSync shares your Marketplace listings into those groups when it posts. To avoid duplicate posts and keep links up to date, ListSync may open your own listings page on a marketplace to find a listing it posted. This happens on your device.

Problem reports and support

When posting to a marketplace fails, the app sends us the marketplace, the error, the page it stopped on (the address without any personal details) and your app version, so we can fix broken marketplace flows quickly. When you contact us through the app or this website, we receive your message, your email and basic app details so we can help.

Location

If you choose to, ListSync can use your location once to fill in your ZIP code for local listings. It isn't tracked or stored beyond the ZIP code you save.

Subscriptions

Payments are handled entirely by Apple. We never see your payment details; we only learn whether your subscription is active.

Who we share it with

We don't sell your data or share it for advertising. We use a small number of service providers only to run ListSync:

• Supabase: hosts your account and synced data (United States).
• Anthropic: runs the AI that writes listings and answers questions.
• Resend: delivers support emails.
• Apple: app distribution, Sign in with Apple and subscriptions. Google: Sign in with Google, if you use it.
• The marketplaces you choose: your listings are posted to them, and each marketplace's own privacy policy applies to what you publish there.

Keeping and deleting your data

We keep your data while your account exists. Delete your account in the app under Profile → Settings → Delete account, and we permanently remove your account and everything synced to it: listings, photos, profile and sales. Problem reports and support messages are deleted with it or within 90 days. Listings already published on marketplaces stay there until you remove them on each marketplace.

Security

Data travels over encrypted connections and is stored with access rules that let only your own account read it.

Children

ListSync is for adults 18 and older. It isn't directed at children, and we don't knowingly collect data from anyone under 18. If you think someone under 18 has an account, contact us and we'll delete it.

Your rights

You can see and edit your data in the app and delete it at any time. To get a copy of everything we hold about you, tap Profile → ListSync account → Request a copy of my data, and we'll email it to you. Depending on where you live you may have further rights, such as asking what we hold about you. Contact us and we'll help.

We don't sell your information

We don't sell your personal information, and we don't share it for targeted advertising (cross-context behavioral advertising). We don't use it to build profiles for ads, and we don't knowingly collect information from anyone under 18.

Rights for residents of certain U.S. states

If you live in a state with its own privacy law, such as California, Colorado, Connecticut, Virginia, Texas or Oregon, you can ask us to tell you what personal information we've collected about you and how we use it, to give you a copy, to correct it, or to delete it. Because we don't sell or share your information for ads, there's nothing to opt out of, but you can still tell us you're opting out and we'll record it. You won't be treated differently for using these rights. To make a request, use Profile → ListSync account in the app or the Support page. We'll confirm it's you using the email on your account and answer within 45 days. If we turn down a request, you can appeal by replying to our answer, and we'll respond within the time your state's law requires. You can also have someone you authorize make a request for you.

Email

We only email you about your account, your subscription, and support you asked for. If we ever send marketing email, it will have an unsubscribe link, and we'll stop within 10 business days of your request.

Changes and contact

If this policy changes in a meaningful way we'll update the date above and let you know in the app. Questions? Use the form on the Support page or Profile → Help in the app.