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What we collect, what happens to the text and files you put into our tools, and who helps us run the service. Written to match how the site actually works.
ZeroTell (zerotell.com) is operated by ZeroTell SI Inc, a Wyoming profit corporation (Wyoming Secretary of State filing ID 2026-002105619), 30 N Gould St Ste R, Sheridan, WY 82801, USA. That company is the controller of the personal data described here.
Questions or requests about your data: use the Contact page and say that it is a privacy request. You can also write to ZeroTell SI Inc at the postal address above.
Account: your email address, and your name and profile picture if you sign in with Google or GitHub. We also remember which sign-in method you used last. Sign-in links and one-time codes are sent by email; links expire after 5 minutes and codes after 10 minutes. We don't use passwords.
Billing: Stripe processes your payment. We receive and keep your plan, subscription status, renewal dates, invoice amounts, currency and Stripe's order and customer IDs, and with each order the pricing details of that checkout (pricing country, currency, the price list used and, if a price test was running, the test and group you were in). We never receive or store your full card number. For introductory-price checkouts we keep the card fingerprint Stripe provides (a code that identifies the card without revealing its number), so each card gets the introductory price only once.
Pricing country and price tests: our prices depend on your country (see the Subscription Terms). On your first visit we work out your country from your IP address (no precise location) and keep it in a first-party cookie, so the prices you see don't change when you travel or use a VPN. When you first go to checkout, that country is stored on your account (pricing country) and used for your later checkouts, because a subscription keeps its currency. If we run a price test in your country, a random device ID and the group you were assigned to are kept in first-party cookies so you keep seeing the same prices, and the group is attached to your checkout. If you accept optional cookies, we also report to Google Analytics that you saw a price test (the test and group, no personal details). The cookies are listed in the Cookie Policy.
Usage: credits granted and used, which tools you ran and when, your free daily run count and, on a plan, fair use counters (how many runs, words, searches or messages you used per tool group in each UTC day, kept for the rolling 30-day fair use window). The free count is tied to a random device ID kept in your browser and to your IP address, and when you are signed in also to your account.
Technical: IP address and browser details, used to rate-limit requests, prevent abuse and keep accounts secure. Our server and error logs record technical events such as failed requests; they may include your account email or IP address when something goes wrong with your account, but not the text or files you put into a tool.
Marketing attribution: if you arrive from an ad or a tagged link, the ad click ID (gclid), UTM tags, landing page and referring site are saved in a first-party cookie, only after you click Accept on the cookie banner, and attached to your checkout, so we can tell which campaigns lead to subscriptions. Until you choose, this is held only in your browser tab; it is not collected if you decline optional cookies.
Sign-up source (only when sign-up source tracking is on, and only after you accept optional cookies): when you create an account we save the campaign or referral link you came from, your landing page and referring site, your IP address and approximate country, and browser details (browser, operating system, device type and model, screen size, language and time zone).
Messages: what you send through the contact form, the live chat or the feedback form (which needs you to be signed in), plus the email address and name you give us or that your account holds.
The short answer: we send your input to the provider that does the work and return the result to you. Without an account nothing is kept. If you are signed in, finished paid runs are saved to your History for 30 days so you can reopen them, and you can delete them at any time.
Sent to the AI model provider that runs that tool and used only to produce your result. Without an account, tool inputs and outputs are not saved to our database, except that an AI Humanizer result, together with the text you submitted, is kept for up to 24 hours so you can unlock or reopen it, then it is deleted.
When you are signed in, each successful paid run is saved to the History page of your dashboard: the tool, a title made from the start of your input, your input text (up to the first 20,000 characters), the settings you chose, the result, and for structured tools the generated document (slides, booklet, storyboard, infographic or report) so you can export it again. For the image generator we keep your prompt and, only when the image is stored on our own cloud storage, a link to it; for the video generator, your prompt, the job ID and the link to the video (a link hosted by the video provider may stop working). Images you upload are never saved to your History. Only you can see your History. You can delete one item or clear all of it from the dashboard at any time, and every item is permanently deleted 30 days after it was saved.
PDF, Word, text and PowerPoint files are converted to text in memory on our server. The text is used for your request; the original file is not written to disk, our cloud storage or our database. If you are signed in, the extracted text you ran through a tool is saved to your History like any other input (see above).
Held in memory only and sent to the speech-to-text provider for transcription. It is never written to disk, our cloud storage or our database. If you are signed in and create notes, the transcript and the notes are saved to your History.
Images you attach to a solver or the chat are sent to the model provider with your request and not stored by us. A start-frame image for the video generator, and an image some media providers need to fetch, is uploaded to that provider's storage or to our cloud storage (Cloudflare R2) for the provider to read; the copy on our storage isn't linked to your account and is deleted after 7 days. Generated images are sent straight back to your browser; generated videos are played from the provider's storage, where they stay under the provider's retention rules.
The plagiarism checker sends the sentences being checked (after any excluded quotes and reference list) to Copyscape, a plagiarism search service run by Indigo Stream Technologies, which compares them with public web pages; where Copyscape is not in use, short phrases from your text are sent as search queries to a web search provider instead. We keep only the matching pages and matched excerpts Copyscape returns, for up to 3 days, so that checking the same text again does not repeat the search; the full text you submitted is not stored. Tools that read a web page fetch only the public URL you give them.
Without an account, your conversation history is saved only in your own browser (localStorage), not on our servers. When you are signed in, your conversations are saved to your account so you can continue them on any device; chats you had in that browser before signing in are moved into your account. Saved chats keep the text of messages and attached documents but never image files (only their names). You can delete one chat or all of them in the chat sidebar, and a chat is permanently deleted 30 days after its last message. Each message you send, with the earlier messages it needs for context, is sent to the model you picked.
Each provider receives only what it needs for its job and processes it under its own terms and privacy policy.
| Provider | What they do for us | What they receive |
|---|---|---|
| Stripe | Payments, subscriptions, invoices, billing portal, fraud checks | Your email, payment details (entered on Stripe's page), plan, pricing country, currency and price-test group, and ad attribution tags as order metadata |
| AI model providers (such as OpenAI, Anthropic, Google, DeepSeek, xAI and OpenRouter) | Running the writing, humanizer, detector, chat and solver tools, and transcribing meeting audio | The text, extracted document text, image or audio you submit to that tool |
| Media generation providers (such as fal, Replicate and Kie) | Generating images and videos | Your prompt and any start image you upload |
| Copyscape (Indigo Stream Technologies Ltd.) | Plagiarism checks: finding public web pages that contain your sentences | The sentences of the text you check (after excluded quotes and references) |
| Web search providers (such as Tavily, Serper and Exa) | Web search in chat, AI Research and other web lookups, and plagiarism checks where Copyscape is not in use | Search queries built from your text |
| Google and GitHub (sign-in) | Signing you in when you choose "Continue with Google" or GitHub, and Google's sign-in prompt | That you are signing in to ZeroTell; they send us your email address, name and profile picture |
| Resend (or Cloudflare Email Sending) | Sending sign-in links and codes, newsletter confirmation, welcome, subscription confirmation and cancellation, yearly renewal-reminder, payment-problem, account-deletion confirmation and support emails; keeping our email contact list | Your email address and the email content |
| Cloudflare (R2 storage, Turnstile) | Storing media files and images a media provider needs to fetch; bot protection on the sign-in form | Those files; browser signals for the bot check |
| Upstash (Redis) | Rate limits, free daily run counts, 24-hour humanizer results, 3-day plagiarism match lists | IP address, device ID, the stored humanizer text and result, the pages and matched excerpts found for a plagiarism check |
| Google Analytics and Google Ads | Measuring visits and ad conversions, only after you accept optional cookies | Pages viewed, device and browser data, ad click IDs, purchase value |
| Crisp | Live support chat, when switched on | Your chat messages, and your email, name and profile picture if you are signed in |
| Sentry | Error monitoring, when switched on: crash reports from our servers and your browser so we can fix bugs | The error message and stack trace, the page URL, browser and device type, and an error reference — never the text or files you put into a tool, and no session recordings |
| Hosting and database providers | Running the website and storing account, billing and usage records, and the History and chats of signed-in users | The data described on this page |
To provide the service: run the tools you request, manage your account, credits and subscription, and send the emails the service needs (sign-in codes, receipts, renewal-related messages).
To keep it safe: rate limits, abuse prevention, fraud checks and investigating failures.
To improve and market it: aggregate analytics and ad-conversion measurement (only with your consent where required), and a welcome email when you create an account. When you create an account, your email address is also added to our email contact list for product news; every marketing email has an unsubscribe link, and unsubscribing removes you from that list. You can also subscribe to the newsletter without an account: we first email a confirmation link to the address you enter and add it to the list only after that link is used; if it isn't, the address is not added and gets no further email from us.
We don't sell your personal data. We don't use the text or files you submit to train AI models. We send it to providers through their paid API services, not their consumer apps, and under the API terms of the providers we use, API inputs aren't used to train their models by default.
Account, billing and credit records are kept while your account is open and afterwards for as long as tax and accounting law requires. Humanizer results and the text submitted for them: up to 24 hours. Plagiarism match lists (matching pages and excerpts, keyed by a fingerprint of the checked text): up to 3 days. Saved History items and signed-in chats: deleted automatically 30 days after they were saved (for a chat, after its last message), or sooner when you delete them. Rate-limit and free-run counters: about a day. Fair use counters: while your account is open; counters not updated for 40 days are removed over time, and all of them are deleted with your account. Attribution cookie: 90 days. Images uploaded to our storage for a media provider to fetch: 7 days. Server and error logs: only as long as needed to run and secure the service. Support messages: as long as needed to resolve the request.
You can delete your account yourself under Settings in your dashboard, or ask us to do it. Deleting it cancels any active subscription immediately (the rest of the period is not refunded automatically — see the Subscription Terms), deletes your personal data, History, chats, usage records and sign-up source record, and removes you from our email contact list; the order records we must keep by law are kept without your account, reduced to payment IDs. The card fingerprint used for the introductory offer is kept without your account, so a deleted and re-created account can't claim the introductory price again with the same card. Stripe keeps its own records of your payments under its privacy policy. We send one last email to the account's address to confirm the deletion.
Depending on where you live (for example the EU, UK, California or Australia), you can ask to access, correct, delete or receive a copy of your personal data, object to or restrict some uses, and withdraw consent at any time. You can also complain to your local data protection authority.
To change cookie choices, use "Cookie settings" in the footer or see the Cookie Policy. To make any other request, contact us; we may need to confirm that the account is yours before acting on it.
International transfers: ZeroTell SI Inc is based in the United States, so your data is processed in the United States, and our providers may also process it in other countries.
ZeroTell is not directed at children under 13 (or the minimum age in your country). Changes to this policy will be posted on this page with a new date. Last updated: 15 October 2026.
This notice tells California residents, at or before the point of collection, which categories of personal information ZeroTell collects, why, whether any of it is sold or shared, and how long each category is kept. It summarizes the sections above; the table below is the short form.
We don't sell personal information, and we have no actual knowledge of selling or sharing the personal information of anyone under 16. The one activity that California law may treat as "sharing" (cross-context behavioral advertising) is ad measurement by Google Analytics and the Google Ads tag, and those tags load only after you click Accept on the cookie banner. Our own first-party attribution cookies (zt_attr, user_tracking_data) are also written only after you click Accept; until you choose, how you arrived is held only in your browser tab, and it is deleted if you decline. If you haven't made a choice and your browser sends a Global Privacy Control (GPC) signal, we treat it as Decline: the Google tags don't load and our attribution cookies are not written. A choice you make yourself in Cookie settings takes precedence over the signal. See the Cookie Policy for every cookie we set.
We don't use sensitive personal information to infer characteristics about you, and we don't ask for it. We never receive your full card number (Stripe handles it), and sign-in works with email codes or Google/GitHub, so we hold no password. Please don't put sensitive details into the tools unless you need to; whatever you paste is handled as described under "What happens to the text and files you submit".
"Sold or shared" uses the California definitions. "Service providers" are the companies listed above, which process data only to do their job for us.
| Category | What it includes | Why we use it | Sold or shared? | How long we keep it |
|---|---|---|---|---|
| Identifiers | Email address; name and profile picture if you sign in with Google or GitHub; account ID; IP address; a random device ID kept in your browser; Stripe customer and order IDs | Creating and securing your account, sign-in, billing, rate limits, counting free daily runs (with or without an account), preventing abuse | Not sold or shared. Disclosed to service providers (for example Stripe, Resend, Upstash) | Account details: while your account is open, deleted when you delete it. IP address and device ID in rate-limit and free-run counters: about a day. Sign-in links and codes: 5 to 10 minutes |
| Commercial information | Plan, subscription status, renewal dates, invoice amounts, currency, pricing country and price-test group, credits granted and used | Providing what you paid for, receipts, renewals, refunds, tax and accounting | Not sold or shared. Disclosed to Stripe | While your account is open. Order and invoice records are kept afterwards for as long as tax and accounting law requires, without your name or email |
| Content you submit | Text, extracted document text, audio, images and prompts you put into a tool; AI Chat messages | Producing the result you asked for; your History and saved chats when you are signed in | Not sold or shared. Sent to the AI model, media or search provider that runs the tool; we don't use it to train AI models | Without an account: not stored, except an AI Humanizer result and its input for up to 24 hours. Signed in: History items 30 days after they were saved, chats 30 days after the last message, or sooner if you delete them |
| Internet or other electronic network activity | Which tools you ran and when; fair use counters; browser and device details; pages viewed and ad conversions (Google, only after you accept optional cookies) | Running and securing the service, enforcing fair use, measuring visits and ad results | Google Analytics and Google Ads measurement may count as sharing; off unless you accept, and off with GPC unless you accept | Fair use counters: while your account is open; counters not updated for 40 days are removed over time. Google data: under Google's own retention settings |
| Marketing attribution | Ad click ID (gclid, gbraid, wbraid), UTM tags, landing page and referring site; when sign-up source tracking is on, the source of your sign-up with IP address, browser and device details and approximate country | Learning which campaigns lead to sign-ups and subscriptions | Not sold. Collected in a cookie only after you accept optional cookies; then attached to your order at Stripe as metadata; reaches Google only through the Google Ads tag after you accept | zt_attr cookie: 90 days, written only after you accept. On an order: with the order record; reduced to payment IDs if you delete your account. Sign-up source record: while your account is open |
| Approximate location | Country derived from your IP address (no precise location); your pricing country | Showing the prices and currency of your country; sign-up source statistics, when sign-up source tracking is on | Not sold or shared. Your pricing country is sent to Stripe with your checkout | zt_pc cookie: 1 year. Pricing country on your account and orders: while your account is open (orders as long as tax and accounting law requires) |
| Communications | Messages you send through the contact form, live chat or feedback form, and the email address you give us | Answering you and fixing problems | Not sold or shared. Disclosed to Resend and, for live chat, Crisp | As long as needed to resolve the request; deleted with your account |
You can ask to know what personal information we hold about you, to get a copy of it, to correct it and to delete it, and you can opt out of the sale or sharing of personal information. We won't treat you differently for using any of these rights.
To opt out of sharing, use "Cookie settings" in the footer (choose Decline), turn on Global Privacy Control in your browser, or follow the steps on Do Not Sell or Share My Personal Data. To delete your account and its data, use Settings in your dashboard. For any other request, contact us and say it is a California privacy request; an authorized agent can also make a request for you. We may ask you to confirm that the account is yours before we act on it, and we answer within the time the law sets (45 days, extendable once when necessary).
Without an account, no: text is sent to the model provider that runs the tool, the result comes back to you, and the only copy we hold is an AI Humanizer result and its input, for up to 24 hours, so you can unlock it. If you are signed in, your finished runs are saved to your private History for 30 days so you can reopen them; you can delete them at any time from your dashboard.
No. We don't share what you submit with schools, instructors or plagiarism databases, and we don't add your text to any database for future comparisons.
Yes. Contact us with the email on your account and the request. We may need to verify that the account is yours before sharing or changing anything.
The Subscription Terms cover renewal, cancellation, fair use, credits and refunds. Cookies are covered in the Cookie Policy.
