IsTalk - chat analysis

Reveal the truth in your chats

The No.1 LINE Compatibility & Chat Analytics App Loved by Everyone!

This app allows you to analyze your LINE conversations in-depth — all without your chat partner ever knowing! Discover your compatibility through your actual LINE interactions. You might uncover unexpected truths about your relationship!

All analysis is done locally on your device, without connecting to the internet, ensuring your data stays safe and secure.

Example Analytics:
・Number of messages exchanged
・Number of stickers sent/received
・Number of calls made
・How often you say “sorry” to each other
・Frequently used phrases
・Most active time of day
・Most active days of the week
・Comparison of message frequency over the past month vs. average

… and so much more! You can find out detailed insights from your chat history.

【Key Features of IsTalk】
・Analyze your LINE chats and get visual insights into your communication style and compatibility with the other person.

・All processing is done offline, with no server communication, so you can use it safely and with peace of mind.

・Find out your compatibility score based on the messages you and the other person have exchanged. Try analyzing your chats with someone you’re curious about!

・For more detailed compatibility analysis, you can use AI features from the analysis screen.
※Requires internet connection. Do not use if your chats contain sensitive, personal, or confidential information.

・The Habits View shows commonly used phrases, active times of day, and response speed trends.

・The Interaction View shows message counts, sticker usage, greetings, apologies, and more.

・The Records View lets you see trends over time such as daily message counts, response time averages, and activity summaries.

・The Compatibility Overview allows you to track how your relationship changes over time, displaying your love level and compatibility score changes in graph form.
※Premium feature only

・With a Premium Subscription, you'll unlock extra features like ad removal and additional analysis tools. Check the "Premium Service" section in our FAQ for full details.

・If you need help using the app or are having trouble analyzing chats, check out our FAQs or watch the tutorial on YouTube.

・You can also customize your analysis icon from the settings.
※Some icons are only available with a premium subscription.

・The Ranking feature lets you see your TOP 3 most compatible people and your TOP 3 most chatted-with users.

・For group chats, only aggregate data is available — compatibility analysis is not supported. You can switch between individual and group chat analysis history by swiping left/right or tapping the arrow at the top of the HOME screen.

Notes:
・If you're unable to analyze chats, go to "Having Trouble?" in the settings.
・This app does not use LINE’s official API. All analysis is done with our original in-app algorithm.
・We always welcome your feedback and suggestions!