X4
Sungyong Moon Business iPhoneiPadiPod touch
X4 is a free Business app for iPhone and iPad by Sungyong Moon. Requires iOS 15.0. Updated October 8, 2026.
- Price
- Free
- on the App Store
- Size
- 44 MB
- Age 4+
- Updated
- Oct 8
- 2026 · v1.0.1
Screenshots
About X4
X4 turns paper business cards into organized digital contacts. Take a photo of a business card, and X4's AI reads it for you. Name, company, job title, phone number, email, website, and address are extracted and saved automatically, so you never have to type them in by hand. KEY FEATURES - AI card recognition Snap a photo and X4 extracts the details on the card in seconds, including cards in many languages. - Company insights X4 looks up the company's public website to help you understand who you just met. - All your cards in one place Browse, search, and edit your saved cards anytime. Each card keeps its original image alongside the extracted details. - Built for global networking Sign up with your phone number from anywhere in the world, with secure verification. PRIVACY AND SECURITY Your data is transmitted over encrypted connections. You can delete your account and all related data at any time from Settings > Account > Delete Account. Questions or feedback? Contact us at [email protected]
What’s new
Version 1.0.1 · Updated October 8, 2026
Added app version check
App privacy
The developer, Sungyong Moon, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Phone Number
- Contacts: Contacts
- User Content: Photos or Videos, Other User Content
- Identifiers: Device ID
Used for: App Functionality
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