Red Sheet Camera: Study Notes
Hide answers and memorize fast
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Turn your everyday notes into flashcards — just by taking a photo.
Red Sheet Camera hides the answers you wrote in red or orange pen (and green highlighter), so you can quiz yourself just like a physical red memorization sheet.
HOW IT WORKS — 3 EASY STEPS
1. Scan your notes or textbook (auto-straightened)
2. Red-pen answers get hidden by the sheet
3. Tap or slide the sheet to reveal the answers
FEATURES
- A real red sheet, digitized
The same idea as a physical red sheet: red and orange pen disappear, while black and blue text stays readable.
- Auto-Hide
Tap "Auto-Hide" to detect red/orange pen and green highlighter and cover them automatically. Fine-tune the hidden areas by tap or drag.
- Organize by subject
Keep a separate notebook for each subject — biology, history, English, math and more.
- Fully on-device
Everything works offline, and your photos stay on your device.
Perfect for exam prep, vocabulary, dates, formulas and anything you need to memorize.
PRO (ONE-TIME PURCHASE)
Scanning, hiding and studying with the red sheet stay free, always.
With Pro:
- The parts you could not recall are remembered
- Next time, review only those parts
- See how many rounds you have done and how much you recalled
- No ads
One payment. Restore it for free after changing or reinstalling your device.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
After a round, you can now tap the parts you could not recall.
With Pro they are remembered, so next time you can review just those parts, and see how much you recalled over time.
If you already bought Remove Ads, you get all of Pro at no extra cost.
The developer, RAINBOW TREE LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 16.6 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- 赤シートカメラ Pro 14,99 zł
- 広告を削除 14,99 zł
- Provider
RAINBOW TREE LLC
- RAINBOW TREE LLC has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
718196627 - Address
〒631-0846
Nara NARA 1-12-9, HIRAMATSU
Japan - Phone Number
+81 9038450579 - Email
rainbowtreedev@gmail.com
- Copyright
- © 2026 RAINBOW TREE LLC