KarlLang
Sung Chul Park Education iPhoneiPadiPod touch
KarlLang is a free Education app for iPhone and iPad by Sung Chul Park. Requires iOS 15.0. Updated June 14, 2026.
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 4+
- Updated
- Jun 14
- 2026 · v1.4.0
Screenshots
About KarlLang
KarlLang is a typing-first vocabulary trainer for adult learners. Instead of tapping multiple choice options, you type every answer yourself. This helps build real recall, not just passive recognition. Learn across multiple languages including German, Japanese, Chinese, Spanish, French, and more. Features: • Typing, copy, card, cram, and Word Drop training modes • Spaced repetition (SRS) review system • Typing hints and focused repetition training • Difficult word and bookmark review • Shareable learning summary cards • CEFR-based vocabulary (A1–B2) KarlLang is designed for learners who want to actively train memory and build real output skills through typing and repetition.
What’s new
Version 1.4.0 · Updated June 14, 2026
Version 1.4.0 adds optional cloud sync with Apple and Google sign-in, so you can keep your learning progress across devices. This update also improves study flow stability and sync reliability.
App privacy
The developer, Sung Chul Park, 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
- User Content: Other User Content
- Identifiers: User ID
Used for: App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction, Other Usage Data
Used for: Analytics