Who we are
Sell is an AI-powered listing assistant operated by JAG Studio Ltd, a company registered in England and Wales, based in London. We are the data controller for the personal data described here. Questions about this policy or your data: hello@jagstudio.digital.
Three ways to use Sell
You can use Sell in one of three ways, and it changes what we hold:
- Sign in with Apple. Apple gives us your name and email address. If you choose Apple's private relay, we never see your real address.
- Sign in with Google. Google gives us your name and email address.
- Guest mode. No account, no email, no name. Your listings stay on your phone only. Your photos are still sent for AI processing and moderation, as described below. Joy, the chat assistant, needs an account.
What we collect, why, and on what legal basis
- Account details (email address and name, from Apple or Google) — to create your account, let you sign back in, let Joy greet you by your first name, show your first name as the seller on the page of an item you publish while your shop is not published, and write to you about your account when we must: for example if Sell were to close, to give notice and arrange a refund as the Terms describe. Legal basis: performance of our contract with you.
- Photos you submit — to generate a listing for the item, and to screen the image automatically before anything is generated. Legal basis: performance of our contract for the generation; our legitimate interest in keeping the service safe and lawful for the screening.
- Listings you create (titles, descriptions, price estimates, item details, the marketplaces you mark them as listed on, and the links to your own listings there that you add) — to store them, show them back to you, and put the links on the item's page. Legal basis: performance of our contract. Guest listings are not sent to us at all.
- Your shop and item pages (the shop address you choose, your bio and photo, the social profiles and contact details you add, and counts of how often each page is opened and its links tapped) — to publish the pages you choose to publish and show you their Insights. Legal basis: performance of our contract. See "Your shop and item pages" below.
- Your eBay username, if you add it — to find your own listings on eBay and link them to your items for you. It is never shown to buyers. Legal basis: performance of our contract.
- What you send to Joy (your messages, any screenshots or photos you attach, the details of a listing you attach, a short summary of your listings, and the link of a listing you share) — to answer you. Legal basis: performance of our contract. See "Joy, the chat assistant" below.
- Purchase records (which credit pack or subscription, when, its period, confirmation from Apple, and Apple's notices when a subscription starts, renews, ends or is refunded) — to add credits to your balance, grant the monthly credits of Sell Pro once per month, and handle refunds and support. Legal basis: performance of our contract and our legal obligations.
- Referral links between accounts — to award credits to both people when an invite is used. Legal basis: performance of our contract.
- Push notification token — to send notifications to your device. Legal basis: your consent.
- App usage data (screens opened, actions taken, device and app version) — to understand how Sell is used and fix problems. Legal basis: our legitimate interest in understanding and improving how the app performs.
- An anti-abuse identifier — see the section below. Legal basis: our legitimate interest in preventing fraud and repeated abuse of free credits.
Joy, the chat assistant
When you write to Joy, your message is sent with the recent messages of that conversation, any pictures you attached, the details of a listing you attached (title, brand, condition, price, description), a short summary of the listings you have in Sell (for each: title, brand, category, condition, price, whether it is a draft, listed or sold, how long it has been up, when its price last changed, where it is listed, how many photos it has and how long its description is — never the photos or the description itself), and your first name. The summary is what lets Joy answer questions about your listings as a whole. They travel through our service on Cloudflare to OpenAI, which writes the reply. Each new message and picture is screened automatically first, in the same way as listing photos.
Your conversations are kept on your phone, not on our servers. We do not store the text of what you write to Joy or what Joy answers. Deleting a conversation in the app, or deleting the app, removes it.
What we do keep, against your account, is a record of each message without its content: when it was sent, its length, whether it carried a listing or a picture, whether the reply arrived, and your app language and currency. We also count how many messages you send each day, so the free daily allowance can be applied. These records tell us whether Joy works and how much it is used, and are deleted with your account.
Shared listing links. When you share a marketplace listing with Joy, our service opens that public page on the marketplace (for example Vinted, Depop or eBay) to read its title, price and photo, so Joy knows what you are asking about. The marketplace sees a request from our service, not from you, and the result is kept for a short time so the same link is not fetched twice. Only links to known marketplaces are opened.
Joy's answers are written by an AI model. They are suggestions and can be wrong.
Your shop and item pages
With an account, Sell can publish a page for an item you have for sale, and a shop at sellai.site/ followed by the address you choose, which gathers your item pages. Nothing is published until you choose to: by generating an item's page, or by publishing your shop. You can take either down at any time in the app.
What anyone with the link can see:
- On an item page: its photos, title, description and details, its price, how many times the page has been opened, the buttons to your listings on the marketplaces, and who is selling it: your shop address and photo while your shop is published, otherwise your first name (or, if we have none, your Instagram or TikTok username).
- On your shop: your address, your bio, your photo, the social profiles and contact details you add, your items for sale with their photos, titles and prices, and the items you have sold recently.
Contact details you add to your shop, such as a phone number or an email address, are public: add only what you are happy for anyone to see. An item page is online only while the item has at least one link to buy it. Our pages ask search engines not to index them, but anyone who has a link can open it and pass it on. A week after an item sells, its page keeps only its title and the fact that it sold: the photos, description and price are no longer shown.
When someone opens one of your pages or taps a link on it, we count it, per page and per day, to show you your Insights. We do not record who the visitor is. Our pages are served through Cloudflare, which handles each visitor's connection as any website host does.
Things that stay on your phone
- Photo clean-up runs entirely on your device, using Apple's built-in image tools. The photo is not sent to us or to anyone else to remove its background.
- Saving to Photos. If you allow it, Sell saves cleaned photos to a "Sell" album in your photo library. We do not read your library beyond the photos you choose.
- The home-screen widget shows data already on your phone.
- Screenshots you paste or share into Sell stay on your phone until you send them to Joy.
- Copied links. When you come back to Sell from a marketplace, Sell asks iOS only whether you copied a link, without reading it, and offers to paste it. The link is read when you choose to paste it, and is then saved to that listing.
Automated screening of photos
Every photo you submit, to generate a listing or to Joy, is checked automatically. If the check flags the image, we do not process it further. No human reviews your photos as part of this check. If you think an image was blocked wrongly, email us and a person will look at it.
Push notifications
If you allow notifications, we store a token for your device so we can send them. We use it for service messages and for occasional marketing messages — for example a reminder that your credits are running low, or a prompt asking whether your item sold.
Marketing notifications rest on your consent. You can withdraw it at any time by turning notifications off for Sell in your iOS settings. That does not affect anything we sent before.
Who else receives your data
We do not sell your data. We share it only with the providers below, who process it on our behalf and under contract:
- OpenAI (United States) — receives the photo you submit and the listing text generated from it, and what you send to Joy, to write the listing or the reply and to run the automated screening. Under our API terms, OpenAI does not use it to train its models.
- Cloudflare (global network) — routes your photo, listing and Joy requests to the AI provider, opens the marketplace links you share or add, and serves your item pages and shop to the people who open them. It carries the data; it does not use it for its own purposes.
- Supabase (United Kingdom) — hosts our database and file storage: your account record, your listings, your listing photos, your shop and the counts of its visits, your purchase records, and the Joy usage records described above.
- Google (United States) — Sign in with Google, if you use it, and Firebase Analytics, which receives app usage events and device and app identifiers.
- Apple (United States and Ireland) — handles in-app purchases and subscriptions and, if you use it, Sign in with Apple. Apple gives us confirmation of your purchase and tells us when a subscription renews, ends or is refunded; we never receive your card details. When you ask Apple for a refund, Apple may ask us how the purchase was used, and we answer as the Terms describe: whether the credits reached your balance, how much has been used since, how long your account has existed, and whether we think a refund is warranted.
- Expo (United States) — delivers push notifications to your device.
- eBay (United States) — where Sell or Joy shows you what similar items have sold for, it receives search terms describing your item, such as a brand and a category. If you add your eBay username, eBay also receives it with the item's title, so that we can find your own listing there. It does not receive your photos.
- Marketplaces (for example Vinted, Depop or eBay) — when you share a listing with Joy or add the link to your own listing, our service opens that public page to read its title, price and photo. The marketplace sees a request from our service, not from you.
We may also disclose data where the law requires it, or to establish or defend legal claims.
Listing photos and public links
If you have an account, your listing photos are stored behind a link that is not guessable but is not password-protected either. We do not publish or index those links, but anyone who has one can open the image. Do not photograph anything you would not want seen by someone holding the link. If you publish an item's page or your shop, the photos on them are public to anyone with the page's link, as described in "Your shop and item pages".
Preventing repeat claims on free credits
To stop the free credit allowance being claimed repeatedly, we keep an irreversible identifier derived from your sign-in details. It contains no email, name or account identifier, cannot be reversed, and is kept even if you delete your account.
It is used for that purpose only. It is never used to profile you, target you, or build a record of your activity.
International transfers
Some of the providers listed above are based in the United States, so your data leaves the UK and the EEA when it reaches them. For those transfers we rely on the European Commission's Standard Contractual Clauses, together with the UK Addendum issued by the ICO, and we assess each provider's safeguards before using it.
You can ask us for a copy of the safeguards we rely on by emailing hello@jagstudio.digital.
How long we keep things
- Your account and listings: kept for as long as your account exists. You can delete individual listings at any time, and deleting your account removes your account record, your listings and your photos.
- Listing photos: deleted with the listing they belong to.
- Item pages and your shop: online until you take them down or delete your account. A week after an item sells, its page stops showing its photos, description and price. The preview image made for a page's link is deleted within a week of the page being taken down.
- Page visit and tap counts: kept per page and per day while your account exists, and deleted with it.
- Guest listings: held only on your phone. We never receive them, and they are gone when you delete the app.
- Joy conversations: held only on your phone. We never store their text.
- Joy usage records (message counts and the details listed above, without content): kept while your account exists, and deleted with it.
- Purchase records, including subscription periods and Apple's notices about them: kept for six years from the end of the accounting year, because UK tax law requires us to keep records of our transactions. This is a record of the transaction itself — not payment details, which we never receive. These records are kept even if you delete your account, because we are not allowed to delete them earlier.
- App usage data: event data is kept for two months. Data held against a user is kept for fourteen months from that user's last activity, and the fourteen months start again each time they use the app.
- Push token: until you turn notifications off or delete the app.
- Anti-abuse identifier: kept indefinitely, including after account deletion, because deleting it would defeat its only purpose.
Your rights
If you have an account, you can ask us to:
- give you a copy of your data, or tell you what we hold;
- correct anything that is wrong;
- delete your account and data;
- restrict how we use your data, or object to us using it;
- send you your data in a portable format;
- stop relying on your consent, where consent is what we rely on.
Email hello@jagstudio.digital and we will respond within one month. You can also delete your account yourself, in the app under Account. Deleting your account removes your account record, your listings, your photos, your item pages and shop, and your Joy usage records. Two things stay: the anti-abuse identifier described above, and the purchase records we are required by tax law to keep. Deleting your account does not cancel a Sell Pro subscription: cancel it in your iOS settings, under your name, then Subscriptions.
In guest mode we hold no account, so there is nothing for us to look up, correct, export or delete. Your listings are on your phone: delete them there, or delete the app. Photos already sent for generation and screening cannot be traced back to you by us.
If you think we have handled your data badly, you can complain to a supervisory authority. In the UK that is the Information Commissioner's Office (ico.org.uk). In the EU it is the data protection authority in the country where you live.
Security
We use reasonable technical and organizational safeguards to protect your information. Access to your data is restricted at the database level so that one account cannot read another's, and credits can only be granted by our server. No method of transmission or storage is completely secure, so we cannot guarantee absolute security.
Children
Sell is for people aged 16 and over. We do not knowingly collect data from anyone younger. If you believe a child has given us data, contact us and we will delete it.
Changes to this policy
We may update this policy from time to time. If we make material changes, we will update the date above and may provide additional notice in the app.
Contact
JAG Studio Ltd, London, United Kingdom
Email:
hello@jagstudio.digital