dia: AI Language Tutor

dia: AI Language Tutor

Speaking practice & feedback

4 ratings
3 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • September 26, 2025
  • October 7, 2026

Features

dia: AI Language Tutor screenshot #1 for iPhone
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dia: AI Language Tutor screenshot #9 for iPhone
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About

Practice speaking a new language with an AI tutor that offers personalized feedback on pronunciation and grammar. Choose from over 40 languages and specific dialects, and customize your AI teacher's personality and voice for a realistic conversation experience.

✓40+ languages and dialects
✓Customizable AI teacher personality
✓Real-time grammar and pronunciation feedback
✓Voice-first conversational practice
✓Adaptive difficulty levels
✓Fluency tracking and analytics
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What's New in dia

2.3.1

October 7, 2026

Make your tutor your own. • Customize your tutor’s look, name and voice, then start a conversation. • Keep learning goals and preferences separately for each language. • Explore free language guidebooks, with account-saved progress and practice. • Return to chats with smoother transitions. • Clearer navigation, language switching and mobile layouts.

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Subscriptions & In-App Purchases

1 Month Unlimited Chats and Calls

A month of unlimited personal practice towards fluency.

$6.991 Month
How to cancel dia subscription ⁉️

User reviews

A joy

This app is well worth the subscription! I’m a shy perfectionist, often freezing when required to speak, so speaking in a new language is extremely challenging for me. This app has been very good practice to build my confidence. I’ve tried to practice speaking with other LLM’s (GPT, Claude, Gemini) but struggled with their ability to keep a structure that allowed for sustainable practice. Dia has been a joy to use, solving for those issues. It has helpful features, giving me feedback on improving my sentence structures. I’m also enjoying the surprise images that appear! Thank you to the researchers (I learned about this app while doing a literature review and reading your paper 🙂)
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Great language app!

Dai is an AI language app that offers many languages and customizable settings. It uses scenario based AI conversations, after using for multiple days the AI learned where I needed help and then helped to make conversations more natural. Being to turn off hints can add more challenges once you get more experience.
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Response from developer

Thank you for the feedback. Happy to hear that talking to Dai is helpful.

Great app. Fun to use

Great app. The AI responds quickly and feels natural to chat with. The interface is clean and easy to use. Adding more customization options and different AI personalities could make it even better. Overall, really solid experience

Response from developer

Thank you for your feedback! I'm working to add new customization options and recently added the option to have AI personas interact with one another (like one can serve as a flight attendant on your plane). I'm glad that it felt natural to chat with, that was the intention :)

Developer apps

FAQ

What languages does TalkToDia support?

TalkToDia supports over 40 languages, allowing users to learn not just the language but also specific dialects and accents from regions like Mexico, Iberia, and Argentina.

Can I customize my AI language teacher in TalkToDia?

Yes, you can personalize your AI teacher by selecting their voice, personality, and teaching style. This allows for a tailored learning experience, whether you prefer a strict or casual approach.

How does TalkToDia help with pronunciation?

TalkToDia provides real-time, gentle feedback on your pronunciation and grammar during voice calls. This judgment-free environment encourages you to make mistakes and learn from them to improve your speaking accuracy.

What are the subscription options for TalkToDia?

TalkToDia offers a Premium Access subscription for $7.99 per month, providing enhanced features and access to all learning materials.

What is the age rating for TalkToDia?

TalkToDia is rated for users aged 9 and older, making it suitable for a wide range of learners looking to improve their language skills.

How often is TalkToDia updated?

The latest version of TalkToDia is 2.2.0, and it was last updated on March 16, 2026. Updates typically include new features and improvements to the learning experience.

What devices are compatible with TalkToDia?

TalkToDia is available on iPhone, iPad, and iPod devices, offering a flexible learning experience across Apple's mobile ecosystem.

Does TalkToDia have ads?

No, TalkToDia does not display advertisements. The app is free to download and use, with optional in-app purchases for premium features.