Privacy Policy
Last updated: 30 May 2026
UniverChat ("the App", "we", "us") is an AI assistant for chat, homework help, images, documents, and scheduling. This policy explains what personal data we collect, how we use it, and — importantly — exactly what data we send to third-party AI services, who they are, and how you control it. UniverChat is published by Duc Hoan Nguyen.
In short: what we share with AI services
To answer you, UniverChat sends the content you submit — the text you type, photos you upload, and text from PDFs or websites you provide, together with the current conversation — to third-party AI services: Google Gemini (operated by Google LLC) for chat, image, document, and website answers, and Wolfram|Alpha (operated by Wolfram Research, Inc.) for step-by-step math and science solutions. UniverChat asks for your consent before you use AI features. We do not sell your personal data, and we do not use your conversations to advertise to you.
1. What data we collect
We collect only what we need to run the App and answer your requests:
| Data | Examples | Why we collect it |
|---|---|---|
| Content you submit | Messages you type; photos you upload; text from PDFs or websites you add; the current conversation | To generate AI answers and keep your chat history |
| Account info | Sign-in identifier, display name, email (via Apple or Google Sign-In) | To create your account, sync history, and restore Premium |
| Subscription status | Whether you have an active Premium entitlement | To unlock paid features and restore purchases |
| Usage & diagnostics | Anonymous feature-usage events, crash reports, device model, OS version | To keep the App stable and improve it |
| Advertising identifiers | Device advertising ID / IDFA (only with your permission) | To show ads to free users (see App Tracking Transparency) |
2. Third-party AI services we share data with
When you use an AI feature, the content required to answer you is transmitted to the relevant AI provider over a secure connection. We send only what is needed for that request. The table below lists each AI service, who operates it, what is sent, and why. These providers process your input under their own privacy policies; we link to them below.
| AI service | Operated by | What is sent | Purpose |
|---|---|---|---|
| Google Gemini API | Google LLC | Text you type; images you upload; text extracted from PDFs and websites you provide; the current conversation history | Generate chat replies, analyze images, and answer questions about your documents and links |
| Wolfram|Alpha API | Wolfram Research, Inc. | The math, physics, or chemistry problem you submit in Homework AI | Produce accurate step-by-step solutions |
3. AI providers' own policies
Your input to these services is also governed by their terms and privacy policies. Google Gemini API: see Google's Privacy Policy (policies.google.com/privacy) and the Gemini API terms (ai.google.dev/gemini-api/terms). Wolfram|Alpha: see Wolfram's Privacy Policy (wolfram.com/legal/privacy). We have confirmed these providers commit to protecting the data they process; per Google's and Wolfram's API terms, data submitted through the paid/generative API is not used to train their general models.
4. Other third parties (not AI)
We also use the following services to run accounts, payments, analytics, and ads:
| Service | Operated by | Data shared | Purpose |
|---|---|---|---|
| Firebase Authentication, Cloud Firestore, Analytics, Crashlytics, App Check | Google LLC | Account info, chat history (if signed in), anonymous usage events, crash logs, device attestation | Sign-in, cloud sync & backup, analytics, stability, abuse prevention |
| RevenueCat | RevenueCat, Inc. | Your account identifier and purchase/subscription status | Manage subscriptions and restore purchases |
| Google AdMob | Google LLC | Advertising identifier and device/usage signals (only with your ATT permission) | Show banner and interstitial ads to free users |
5. Your consent and choices
Before you use an AI feature for the first time, UniverChat shows a notice explaining that your input will be sent to third-party AI services (Google Gemini and Wolfram|Alpha) and asks you to agree. You can decline, and you can stop using AI features at any time. On iPhone, personalized ads also require your separate permission through Apple's App Tracking Transparency prompt — if you decline, you still see non-personalized ads (free tier).
6. Where your data is stored
Your chats are stored on your device and, if you sign in, synced to Google Cloud Firestore so you can access them across devices and restore them. AI providers process your input to generate a response and return it; UniverChat does not operate its own servers that retain your raw prompts beyond what is stored in your account history.
7. How long we keep it
We keep your account and chat history until you delete them. You can delete an individual chat in the App, or delete your whole account and all associated cloud data (see the Delete Account page). Deletion is completed within 24 hours. Anonymous analytics and crash logs that cannot identify you may be retained for a limited period to improve stability.
8. Your rights (GDPR, CCPA, Vietnam PDPD)
You can access, correct, export, or delete your personal data at any time. The fastest way is Setting → Account → Delete Account in the App, or email us (below). We do not sell personal data and do not discriminate against you for exercising your rights. Requests are handled within 24 hours.
9. Security
Data is encrypted in transit using industry-standard TLS. Sign-in is handled by Apple, Google, and Firebase Authentication — we never see your password. We use Firebase App Check to help ensure requests come from the genuine App.
10. Children
UniverChat is rated 4+ (App Store) / Everyone (Google Play) and is intended for general audiences, including students. There is no chat, messaging, or contact between users, so a child cannot communicate with strangers through the App. We do not knowingly collect personal data from children under 13 (or the local equivalent). In-app purchases are governed by Apple's and Google's parental-control tools. See our Child Safety Standards page.
11. Changes to this policy
If we change this policy materially, we will update the date above and notify you in the App. Continued use after a change means you accept the updated policy.
12. Contact
Questions or privacy requests: support@univerai.app. We are based in Vietnam and reply within 48 hours.