Syllo Privacy Policy
Syllo

Privacy Policy

Effective October 20, 2026

The short version

Who we are

Syllo is a student planner for iPhone and iPad, made by Dandre Sterling in Canada ("we"). This policy explains what Syllo does with your information. Questions go to support@syllo-ai.ca.

What stays on your phone

These are saved only on your device. We can't see them.

Your calendar

If you turn on Calendar sync, Syllo asks for access to your calendars and adds your deadlines, exams and classes to the calendar you pick (such as iCloud, or Google if that account is on your phone). Syllo only changes events it added, and removes them if you turn sync off. Your calendar events are not sent to us.

Camera

Syllo uses the camera only when you choose to scan a printed syllabus. It uses the microphone only while you record a lecture, and speech recognition only to write that recording's transcript on your device.

What leaves your phone, and why

Reading a syllabus and the assistant

To read a syllabus, Syllo sends its text to our server, which passes it to OpenAI (the GPT-4o mini model) and sends the dates and grade breakdown back to your phone. When you ask the assistant a question, your question and a short summary of your courses and dates go the same way.

Summarize these notes

When you tap "Summarize these notes", the words in that note (for handwriting, the words your phone read from it) go the same way to OpenAI, and the summary comes back as a new note. We don't keep the note or the summary on our server.

Uploading several syllabuses at once

When you upload two or more syllabuses together, your phone sends their text to our server so they can be read while you do something else. The text is deleted as soon as each one is read, and the results are deleted once your phone collects them, or after 3 days at most. If you allow notifications, we keep your device's notification address with the upload, only to send "Your courses are ready", and delete it with the upload.

Notion

If you connect Notion, you choose which pages Syllo may see. Notion gives your phone a key that is kept in your device's Keychain; our server only passes it to your phone during sign-in and keeps it for at most 15 minutes. Syllo reads the pages you pick directly from Notion on your phone. We don't keep your Notion pages. You can disconnect in Syllo at any time.

Usage counts

To keep the free plan fair and our costs in check, our server counts how many syllabuses you read and messages you send each day. Before you have an account, these counts are tied to a random ID made for your copy of the app, not to you. With an account, they're tied to your account. We keep only the counts and dates, never the text, and delete them within 12 months.

Syllo also sends anonymous counts of how often its parts are used each day (for example, how many times the calendar or notes were opened), with the kind of device, the language and the app version. They carry no ID, no account and no content, so they can't be linked to you. They help us see what to improve. You can turn them off in Settings, Privacy. We delete them after 400 days.

Our website (syllo-ai.ca) and web app (app.syllo-ai.ca) count visits the same anonymous way: how many pages were viewed each day, how many people visited (your browser remembers, only on your own device, that it was already counted today), where visits came from (for example Instagram or a search engine), and which main buttons were used. No cookies, no ID and no IP address are kept. If your browser asks sites not to track you (Do Not Track), nothing is counted.

Your account

An account is optional; you can use Syllo's planner without one. The assistant and the free 14 days of Syllo Pro need one. When you make an account, we keep:

Syllo Pro purchases

Apple handles payment; we never see your card. We use RevenueCat to know whether your account has Syllo Pro. RevenueCat receives your purchase record from Apple and an ID for your account, not your name.

Who handles your information

ServiceWhat forWhat they getWhere
SupabaseOur server and accountsEmail, account ID, usage counts, anonymous usage counts; syllabus text, notes and questions pass through without being kept (bulk uploads for up to 3 days)United States
OpenAIReading syllabuses, summarizing notes, answering questionsSyllabus text, the note you summarize, your question and a summary of your coursesUnited States
NotionBringing your pages into Syllo, only if you connect itYour Notion sign-in; Syllo reads only the pages you pickUnited States
RevenueCatSyllo Pro subscriptionsPurchase record and account IDUnited States
BrevoSending your sign-in code by emailEmail addressEuropean Union
AppleApp Store payments, Sign in with Apple, calendar, widgets and notificationsAs set out in Apple's own privacy policyVaries

These services may store and process information outside Canada, where different privacy laws apply.

What we don't do

Your choices

Children

Syllo is made for high school, college and university students and is not meant for children under 13. If you believe a child under 13 has made an account, contact us and we'll delete it.

Security

Information sent between Syllo and our server is encrypted in transit. Your sign-in is kept in your device's Keychain. No system is perfectly secure, but we keep what we hold to the minimum Syllo needs.

Changes to this policy

If we change how Syllo handles your information, we'll update this page and the date at the top. For important changes, we'll tell you in the app.