Privacy Policy

Last updated: November 7, 2026.

This policy describes the iOS app named Bueller, Bueller (bundle identifier hichew.app.Hi-Chew). The same explanation is available in the app under Settings → Privacy.

What the app stores

On the iPhone, in the app's private storage and the Keychain:

• Student names, grades, class periods, and optional photos you add
• A class roster, if one was included in a development build, copied into the app's storage on first launch
• Classroom photos and seating charts
• Name-quiz progress, seating-game progress, and saved practice sessions
• Display preferences, such as name format and the last class or chart you used
• Up to five previous versions of your students, photos, seating charts, and progress, kept so a recent class can be restored
• The date and student and chart counts of the last backup file the app saved and checked
• A passcode, stored only as a salted hash in the iPhone Keychain

The app can use the camera to photograph a classroom. Choosing a student photo uses the system photo picker. The app does not receive access to the whole photo library, and it does not request location, contacts, microphone, or tracking permission.

What leaves the device

The developer does not operate an account system, analytics service, advertising SDK, or cloud sync. The app does not send student records to a server run by the developer.

If you tap Share PDF or Print, the app builds a PDF from the export settings on screen and hands that file to iOS. Sharing can send the PDF to another app you choose, such as Files or Mail. Printing sends it to the printer you choose. Those services are outside this app. Temporary seating PDFs created for sharing are removed from the app's temporary folder when you share again.

Backups and previous versions

Save Encrypted Backup puts your students' names, grades, periods, and photos, plus seating charts, classroom photos, and progress, into one file. The file is encrypted on the iPhone with AES-256, using a key made from a password you choose, before iOS asks where to save it. It goes only where you pick, such as Files or iCloud Drive, and the app never uploads it. The app does not store the password, so a forgotten password can't be recovered by anyone. If you save to iCloud Drive, Apple's iCloud service stores the encrypted file under your Apple Account.

Backups saved by earlier versions of the app are not encrypted. Anyone with one of those files can see the student records in it. The app can still restore them, and it warns you first. Delete those files after saving a new encrypted backup.

A few seconds after you change students, photos, or seating charts, the app keeps a previous version in its private storage. Up to five are kept. They are protected by the iPhone passcode, left out of iCloud and computer backups of the iPhone, and deleted when the app is deleted. They are not a substitute for a backup saved somewhere else.

Deletion

• Edit a student and choose Delete Student to remove that record, the photo the app saved for them, and their name-quiz progress. Their seat is left empty.
• Delete a seating chart from the chart screen to remove its classroom photo and seating-game progress for that chart.
• Delete the app to remove its remaining local files, including previous versions. The passcode hash is stored in iPhone Keychain. Keychain items may remain after an app is deleted, so deleting the app may not remove the passcode hash. Backup files you saved in Files or iCloud Drive are not deleted with the app. Delete them in Files.

Children

The app is a tool for teachers. It is not a student-facing social app. You are responsible for complying with school policy and any law that applies to the student records you enter.

Contact

Email: avansardar@outlook.com

Changes

If this policy changes, this page will show a new date, and the in-app Privacy screen should be updated to match.