Privacy Policy
Last updated 26 October 2026
Acuide is a study app. It works by reading the material you give it, so being straight about where that material goes matters more here than it would for most apps. This page says what we collect, why, and who else touches it.
Who we are
Acuide (“we”, “us”) provides the Acuide app for iPhone and iPad, the Acuide web app at app.acuide.com, and this website. This policy covers all three. Contact us at support@acuide.com about anything on this page.
What we collect
Account information
Your email address, and a display name if you give one. If you sign in with Apple or Google, we receive the email address that provider releases to us — including Apple’s private relay address if you choose to hide yours. We never receive your password for those accounts. If you sign up with an email and password, the password is held and verified by our identity provider and never reaches our servers in a form we can read.
Study content you create
Notes, documents, images, courses, flashcards, quiz answers, chat messages, and anything else you write or upload. This is the substance of the product and we store it so it is there when you come back.
Voice dictation
If you use voice dictation, Acuide records the audio you choose to dictate. On iPhone, the live transcript is produced on your device by Apple’s speech recognition; when you finish, the recording and that transcript are sent through our server to OpenRouter, which passes them to a Google Gemini model to produce the final transcript. In the web app, the recording is sent the same way. The audio is used to produce that transcript and is not used for advertising or to train our own models. You can use the app without granting microphone access.
Learning activity
Which lessons you opened, what you answered, when reviews came due, how long sessions ran, and streaks. The review scheduling is built directly on this — without it the app cannot decide what to show you next.
Diagnostics
Crash reports, error traces, performance samples, device model and OS version, and app logs. We use these to find and fix faults.
Product analytics
Which screens were opened and which features were used, tied to your account so we can tell a returning user from a new one.
Data kept in your browser (web app)
The web app keeps some data in your browser so it survives a reload: drafts of answers, lessons and courses, chat attachments you added, and settings such as theme and timer state. Sign-in uses cookies set by Clerk. Some of this stays in the browser after you sign out; to remove it, clear the site data for app.acuide.com in your browser settings. This website (acuide.com) sets no cookies and runs no analytics.
How your material reaches an AI model
This is the part worth reading closely. Your material reaches outside AI providers in two ways: when you ask for something, and, for search, automatically.
When you ask
When you ask Acuide to build a lesson, generate a quiz, explain something, or answer a question, the relevant part of your study material is sent to a third-party AI provider to produce that response. That means your notes, documents, and questions leave our systems and are processed on their infrastructure.
These requests go from our server to OpenRouter, which passes them to the model that feature uses: by default models from DeepSeek, Google, and OpenAI, and, if you pick one in the chat model menu, models from Anthropic, xAI, Moonshot AI, Z.ai, or Alibaba (Qwen). OpenRouter may send a request to the model’s developer or to another company that runs the model. Some automatic quality checks on AI output, such as reviewing generated lessons, call Anthropic’s Claude models directly, and can include the material the output was based on.
If you connect Google Classroom, the titles, due dates, and status of your imported assignments, and your course names, become part of that material. They are sent to the AI provider only when you ask the assistant about your work and when Acuide prepares your daily study brief, which you can turn off in Settings. They are used only to answer that request.
When you let the assistant search the web or open a web page, it sends search terms written from your question to a web search service, and the pages it opens receive a request from our server.
Reading a note aloud sends the text you chose to Inworld’s speech service.
Search indexing (automatic)
So that the assistant can find the right part of your material, the text of your notes, documents, flashcards, quizzes, lesson plans, and the text extracted from files you upload is sent to Google’s Gemini embedding service when you save it, which returns a numeric representation used for search. This happens automatically, not only when you ask, and goes directly to Google rather than through OpenRouter.
Image descriptions (off unless you turn them on)
Images you add to your Library have no text to search. If you turn on “Describe images with AI” (Settings, then Acuide AI), each image you add is sent to Google’s Gemini in the background, and the description it returns is stored with the file so it can be searched. It is off until you turn it on, and turning it off stops any further images being sent. Asking the assistant about an image in a chat is a request you make and does not depend on this setting.
What we do and do not do with it
We send only what the request or the index needs, we do not sell your material, and we do not use it to train our own models. What each provider may do with data it receives is governed by its own terms.
We check the quality of AI answers using conversations from our own test accounts. We do not copy real users’ conversations for this. Those test samples are scored by an AI model and deleted after 30 days.
AI output can be wrong. See the accuracy section of our Terms.
Photos you capture
Capture turns photos of your notes or questions into digital notes, summaries, or worked answers. Acuide sends them to Google’s Gemini models through OpenRouter, which read the images and return the result. Photos are captured through the system camera or chosen from your library. When you open the in-app recent-photos grid, Acuide asks for Photos access and shows up to 20 recent images; you can grant limited access or full access through Apple’s permission controls. The separate Apple photo picker lets you choose photos without granting Acuide broader library access. Acuide sends photos you capture or select. If live question-finding is enabled, Solve also sends occasional camera frames to Gemini through OpenRouter while you aim, before you take a photo. This happens only after you allow Capture AI and can be turned off in Settings, under Acuide AI.
Photos and live frames are used only to produce the result you asked for. They are not used for advertising, use-based data mining, or to train our own models. The original pages are kept with the note the capture produced, so you can check the transcription against what you photographed.
Before Capture AI sends a photo or live frame, Acuide shows you this disclosure in the app and asks you to allow it. You can withdraw that permission at any time: Settings, then Acuide AI, then turn off “Capture uses AI”. With it off, Capture stops sending photos and live frames. You can still send a photo to the assistant, which carries its own disclosure. Content Capture produces is marked “Generated by AI” in the app.
Why we process it
- To give you an account and keep you signed in.
- To store and sync your material across your devices.
- To generate lessons, quizzes, explanations, and review schedules from that material — the core function you asked for.
- To fix crashes and make the app faster.
- To understand which features are used, so we build the right ones.
- To take payment, where you subscribe.
Where the GDPR applies, our legal bases are performance of a contract (running the app you signed up for), legitimate interests (diagnostics, security, product analytics), consent where we ask for it, and legal obligation where one applies.
Who else processes your data
We use the following providers. Each acts on our instructions, and each publishes its own privacy terms.
- Clerk — accounts, sign-in, and email verification codes.
- Resend — sends account emails (sign-in and verification codes, security notices, and password resets). It receives your email address and the message.
- Convex — the database and file storage holding your account and study content, and the background jobs that run on it.
- OpenRouter and the model providers it routes to (including Google, whose Gemini models process the photos you capture and transcribe voice dictation) — AI generation.
- Anthropic — Claude models for automatic quality checks of AI output.
- Inworld — receives the text you ask Acuide to read aloud, to synthesise the speech.
- Google — Gemini, called directly, for search indexing of your material and image descriptions when you turn them on. If you connect your school’s Google Classroom, we read your courses, coursework, and your own submissions from it. We never write to Google Classroom and we ask for read-only access to your own work only.
- PostHog — product analytics in the iPhone and iPad app, under a scrambled account identifier. Nothing is sent for users below the age limit.
- Sentry — crash and error reporting in the iPhone and iPad app.
- Apple and Google — sign-in, where you choose it. Apple also distributes the iPhone app and delivers its notifications, and handles payment if you buy a subscription in the app.
- Your browser’s push service (for example Google, Mozilla, or Apple) — delivers notifications from the web app if you turn them on. It carries the notification’s title and text.
- Hetzner — hosting for the Acuide servers that run AI requests and school connections.
- Vercel — hosting for the web app and this website.
We do not sell your personal information, and we do not share it for cross-context behavioural advertising.
Google user data
Acuide’s use and transfer of information received from Google APIs, including Google Workspace APIs, adheres to the Google API Services User Data Policy, including the Limited Use requirements.
We use Google Classroom data only to show you your own courses, assignments, and due dates in Acuide, and to let the assistant and your study brief work from them. We do not sell it, do not use it for advertising, and do not use it to create, train, or improve AI models.
Where your data is held
Acuide’s own database and servers are in the United States. Our providers operate in the United States and elsewhere. If you are in the UK, EEA, or another region with transfer rules, your data may be processed outside it under the safeguards those providers maintain, such as Standard Contractual Clauses.
Study groups
When you share something into a study group, the group’s members can see it. If you delete your account, everything you shared is withdrawn from the groups you are in, and your entries in their activity feeds are removed. A group you own is handed to another member (an admin first, otherwise the longest-standing member) so it keeps working for everyone else; a group with nobody else in it is deleted.
How long we keep it
Your account and study content stay until you delete them or close your account.
Deleting your account
Request deletion in Settings on iPhone, iPad, or the web. Deletion is scheduled 30 days later, and you can cancel it at any time before then. Once the 30 days are up, a daily job erases your data from our database and file storage, in batches for large accounts, then deletes your sign-in account with Clerk and revokes any school connection on our servers.
Deletion removes your notes, documents, files, images, flashcards, quizzes, chats, memories, learning history, schedule, grades, school connection data, settings, notification tokens, and the product analytics events held in our database. Analytics events already sent to PostHog and crash reports already sent to Sentry are not removed by this process; they carry a scrambled account identifier, not your name or email. A few records are kept with nothing that identifies you: security audit log entries (for up to three years) and records of AI usage costs. Crash reports are kept with your account identifiers removed until they expire. We also keep the deletion request itself, including the email address on it, so the deletion is honoured.
Time limits
Separately from deletion, some data is removed automatically after a set time. The current defaults are: diagnostic logs from the app 7 days; AI activity details 30 days; quality-evaluation samples from test accounts 30 days; read-aloud audio 30 days; app session records 90 days; product analytics events 90 days; crash reports 180 days. Flashcard review receipts are an exception: we keep the event identity, scheduling record, and minimal numeric information needed to prevent duplicate reviews and correct weekly totals when a review is undone. These receipts remain until you delete your account and are included in your account export. Raw review and confidence-prediction records are removed after 90 days.
Exporting your data
You can download a copy of your data from Settings on iPhone, iPad, or the web. The export is a JSON file with your study content, chats, and learning history.
When you ask a follow-up question about a Capture answer, that conversation is saved to your account like any other chat, so it can sync across your devices. It can include text Acuide read from your photo, such as the question and the worked answer. If you delete a conversation that began from Capture, we permanently delete our copy of it, including those messages and the replies, within 30 days.
Your rights
Depending on where you live, you may have the right to access a copy of your data, correct it, delete it, restrict or object to processing, port it elsewhere, and withdraw consent. Email support@acuide.com and we will answer within the time the applicable law allows. You can also complain to your local data protection authority.
Children
Acuide is not directed at children under 13, and we do not knowingly collect their personal information. If you believe a child under 13 has given us data, email us and we will delete it. Users between 13 and the age of digital consent in their country should have a parent or guardian agree on their behalf.
Security
Traffic is encrypted in transit. Session credentials are held in the iOS Keychain on iPhone and iPad, and in cookies set by Clerk on the web. Access to production data is limited to those who need it. No system is perfectly secure, and we do not claim otherwise.
Changes
We will update this page when our practices change and move the date at the top. If a change materially affects you, we will tell you in the app before it takes effect.