What's the code
Send fun hidden code messages
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Share secret messages with friends!
Turn your memo into a fun cipher using a 4-digit passcode.
“What’s the Code?” is a fun and clever app that turns your memo into a cipher with just a 4-digit passcode.
Simply enter your message, set a passcode, and tap the “Run” button to transform it into a secret code!
Key Features
• Easy to use: Type your memo → Enter a 4-digit passcode → Tap “Run” — done!
• Your secret message appears with a unique paper animation
• Instantly copy or share the result with friends
• Ads are included, but never interrupt your flow — they appear gently only once every 8 runs
Use it when you want to share secret messages with friends,
have fun with inside jokes,
or simply add a mysterious twist to your chats.
Start with “What’s the Code?” today!
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Bug fixes and performance improvements
• Enhanced stability
The developer, Boyle Sim, 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:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Boyle Sim
- Size
- 14.6 MB
- Category
- Entertainment
- Compatibility
Requires iOS 18.4 or later.
- iPhone
Requires iOS 18.4 or later. - Mac
Requires macOS 15.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.4 or later.
- iPhone
- Languages
- English and Korean
- Age Rating
16+
- 16+
- This app is rated 16+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Age Assurance
Parental Controls
Contains
Unrestricted Web Access
Messaging and Chat
User-Generated Content
- Copyright
- © 2025 BNC Studio