Koko: Language Practice
Private, secure conversations
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Koko gives you unlimited conversation practice while keeping your voice, information, and data private on your device. Nothing leaves your iPhone. It can even be run in Airplane mode :)
Learn a new language by speaking and listening more! A lot of people struggle to actually hold a conversation when learning a language because they don't practice speaking and immersing themselves in the language.
Features We Love:
- Fully private. Your voice and conversations never leave your device.
- Conversations are scaled to your level. For beginners, Koko uses small, beginner-friendly words and speaks slowly. For advanced speakers, Koko speaks quickly and uses advanced vocabulary.
- Quick translations
- Feedback on your responses to help you learn how to speak better
- Cloud mode: Get started quickly by using our private cloud LLM instead of downloading the models locally
Current languages:
- English
- Spanish
- French
- Italian
- German
- Japanese
- Polish
- Vietnamese
Koko requires iOS26+ in order to run the conversation models on your own device.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
Support for Chinese (Mandarin + Cantonese) and Korean native languages.
The developer, Prism App Labs, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Prism App Lab
- Size
- Up to 80.8 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Koko Yearly Plan $39.99
- Koko Monthly Plan $7.99
- Copyright
- © 2026 Prism Labs LLC