# IsTalk - Talk Analysis — Understand Your Connection

> LINE chat analysis app for compatibility and communication insights. (iPhone/iPad app by REALBIND .inc.)

- Source: https://appshunter.io/ios/app/istalk-talk-analysis/id1555905116 (this page in markdown: same URL + `.md`)
- Developer: [REALBIND .inc](https://appshunter.io/developer/1555905118)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 51 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 140 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Thai, Chinese (Traditional, Taiwan)
- Released: 2021-03-18
- Data updated: 2026-09-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/istalk-talk-analysis/id1555905116/reviews.md

## What is IsTalk?

*：。・*。*：。・*。・*：。・*。*・*。*。*。*
Thanks to you, over 1,000,000 downloads!
*：。・*。*：。・*。・*：。・*。*・*。*。*。*

This is the No. 1 LINE compatibility diagnosis/talk analysis app that everyone is using!
This app lets you thoroughly analyze LINE chat content without the other person knowing!
You can even find out your compatibility from your LINE exchanges!
You might discover facts you never knew!
*To ensure safe and secure use of the app, chat content is analyzed within the app terminal without going through the internet.

For example...
　Number of chats (number of times you chatted with each other)
　Number of stamps (number of stamps sent and received)
　Number of calls (number of calls made to each other)
　Number of times you said "sorry" (number of times you apologized to each other)
　Phrases that you frequently use with each other
　The time of day you most often communicate
　The day of the week you most often communicate
　Whether the number of chats in the last month is higher or lower than the overall average
...and much more! You can accurately find out various information about your exchanges!

[Features of IsTalk]
・Thoroughly analyze your and your partner's LINE chats, learn about your compatibility, and aggregate and display information about your LINE exchanges in an easy-to-understand manner.

・All analysis processing is done offline (without communication with a server), so you can use it safely and securely.

・The analysis results diagnose your compatibility with the person you analyzed. Check out your LINE compatibility with that special someone.

・On the analysis results screen, AI can perform even more detailed compatibility analysis (*Network connection is required to use this function. Please do not use if there are exchanges that contain confidential information, secret information, or personal information.)

・AI "Relationship Mapping" visualizes your relationship on a graph for a smart overview of compatibility.

・Habit screen: see frequently used phrases, peak chat times, and reply speed trends.

・Behavior screen: view chat counts, stamp counts, greetings, apologies, and more.

・Record screen: time-series chat trends, reply time changes, daily averages, and monthly summaries.

・Overall compatibility assessment tracks changes over time with graphed compatibility scores. *Premium only

・Premium service unlocks ad removal and additional features. See "About Premium Services" in FAQ.

・Customize analysis icons from settings. *Some icons are premium only.

・Rankings show TOP 3 compatibility matches and most-chatted partners.

・Group LINE analysis supports aggregation only (no compatibility). Swipe HOME screen to switch views.

*If you cannot analyze, check "What if you cannot analyze?" in settings.
*This app does not use LINE's API. All analysis uses our own unique algorithm.
*We welcome your opinions and requests.

## Key features

- LINE chat analysis
- Compatibility diagnosis
- Offline processing
- AI relationship mapping
- Habit and behavior insights
- Time-series trend analysis
- Group chat analysis

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Plan Monthly | $2.99 | per month |
| Premium Plan Annual | $22.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| S- Ticket（50 set） | $6.99 | one-time |
| S- Ticket（100 set） | $11.99 | one-time |
| S- Ticket（30 set） | $3.99 | one-time |
| S- Ticket（10 set） | $1.99 | one-time |
| S- Ticket（20 set） | $2.99 | one-time |
| 広告の非表示+追加コンテンツ開放 | Free | one-time |


## Recent user reviews (10 of 51)

All indexed reviews: https://appshunter.io/ios/app/istalk-talk-analysis/id1555905116/reviews.md

### 3/5 — AIの精度がイマイチ

*2026-06-20*

AIに悩みを相談できますが、そのAIもあまり精度が良くないと感じました。AIと人間ではまた違うのは当たり前なのですがそれ以前に、相手と自分のどっちがメッセージを送ったのかという判断が甘いです。相手が喋ったことを自分が言ってる判定になってしまっている、みたいなこと、逆も然りです。そこが改善されるともう少しアドバイスが変わったりするかな？と少し気になります。ほかはあまり気になることありません！いつもお世話になってます。ありがとうございます。

**Developer response:** 開発者の福田です。貴重なご意見ありがとうございます。

相手と自分のメッセージの混同につきまして、対応が甘く申し訳ございません。
現在の実装を確認した上で、次回バージョンで改善していきたいと思います。
引き続きIsTalkをよろしくお願いいたします。

### 5/5 — ありがとうございます

*2025-10-11, version 2.10.0*

検索できるようになったのはほんまうれしいです！！！！！！！ですが再分析ということはもう一回同じように分析しないといけないのでしょうか？でしたらトークがなくなっているのでできません😭😭あと！一ヶ月ごとにらいんみれるじゃないですか！それ全部見れるようにしてほしいです😭😭😭カレンダーみたいにその日付おしたらその日のらいんがみれるみたいな！

### 3/5 — 通話出れなかった回数が全然違うのが残念！

*2025-10-02, version 2.9.5*

知りたい項目が大体揃ってて凄く良いんですけど、通話出れなかった回数がゼロじゃないのにゼロになってたりしてそこだけ残念です。課金してるので直るの待ってます！

### 3/5 — 反響されてなさすぎ🙃

*2025-09-04, version 2.9.4*

トーク回数とか送信取り消しの回数、電話の回数、よく使ってる言葉の回数とかが全然合ってないです。もっと正確なものを出してくれるとこのアプリをダウンロードして使ってる意味があると思います。

### 1/5 — 、

*2025-05-29*

知人との相性診断をしたくて入れさせて頂きました。細かく書かれていて非常に便利でした✨️ですが、このアプリを入れてから非常にスマホが重くなってしまいました…。

**Developer response:** 開発者の福田です。 この度はご迷惑をおかけし、大変申し訳ございません。
本アプリはセキュリティの都合から、LINEのデータ容量を端末内部に保存する形にしております。
そのため、あまりに大きなデータを分析してしまうと、アプリの機種によっては動作が重くなってしまうことがあります。
この問題につきましては、社内でも今後検討していきたいと考えておりますので、改めてアナウンスさせていただきます。

### 5/5 — 一瞬で結果が出た！

*2025-05-15, version 2.7.4*

ダウンロードから相性結果が出るまでに5分くらいしかかかりませんでした。
LINEの履歴を送るのもアプリから連動してできるので簡単です！プレミアムに登録しなくても動画視聴でラブ度を見ることができました！

### 5/5 — 使ってみて面白い

*2025-05-15, version 2.7.4*

色んな人との相性が確認できて面白い。
友人から面白いと薦められやって見たらたしかに面白い✨

色んな分析があり、作った人がすごいなと思いました☺️

### 3/5 — ところどころ違う

*2025-05-11*

たとえば「w」を一回も使ったことがないのに17回使ったと表示されたり、逆に愛の言葉系は全然カウントされていなかったりする。

**Developer response:** いつもご利用ありがとうございます！
wのカウントについては、何か問題が起きている可能性がありますので、調査させていただきます。
愛の言葉系については、フレーズの種類の条件が様々ありますが、こちらも合わせて調査させていただきます。

### 5/5 — めっちゃいい

*2025-05-09, version 2.7.4*

いつも使わせていただいてます！！だけどこの間やったとき通話総合時間が91時間だったのにさらに今日10時間電話したのに変わりませんでした、、なんででしょうか！

### 2/5 — ？？

*2025-04-08, version 2.7.0*

半年ほど前まではよく使っていて久しぶりに利用したらアップデートしてあるのにLINEを開く、を押してもなんの反応もなく診断できなくなった。

## Frequently asked questions about IsTalk

### What does IsTalk do?

IsTalk analyzes your LINE chat history to provide insights into your communication patterns and compatibility with others. It can identify frequently used phrases, peak chat times, reply speed trends, and even offer an AI-driven compatibility assessment.

### How does the compatibility analysis work?

The app analyzes your LINE exchanges to diagnose your compatibility with the person you've been chatting with. It aggregates and displays information about your LINE exchanges in an easy-to-understand manner, with advanced AI analysis available for a deeper understanding.

### Is my chat data safe with this app?

Yes, all analysis processing is done offline within the app terminal without going through the internet, ensuring safe and secure use. However, AI analysis requires a network connection, and you should avoid using it for exchanges containing confidential or personal information.

### What are the premium features?

The premium service unlocks ad removal and additional features, including an overall compatibility assessment that tracks changes over time with graphed compatibility scores. Some customizable analysis icons are also premium only.

### Can I analyze group chats?

Yes, the app supports group LINE analysis for aggregation purposes. You can switch views on the HOME screen to access this feature. However, compatibility diagnosis is not available for group chats.

## Version history (last 5 releases)

### 4.0.3 — 2026-08-31

・We rebuilt the login bonus claim flow. It now responds the moment you tap, and the wait before your reward appears is shorter.
・Fixed an issue where the claim animation was missed when you doubled your bonus by watching a video.
・Other minor bug fixes and stability improvements.

### 4.0.2 — 2026-08-30

・Fixed fun AI readings sometimes returning a relationship analysis even when you picked something like the Animal Encyclopedia.
・Ask AI now answers based on the numbers shown on screen, including emoji and communication style.

### 4.0.1 — 2026-08-28

・Added frequently used emoji and kaomoji to the Phrase tab.
・Now records frequently used emoji and kaomoji.
・Added emoji and kaomoji counts to the Record tab.
・Added speaking style types to the Trend tab.
・Added four categories of communication styles.

### 4.0.0 — 2026-08-27

IsTalk 4.0.0 is an update featuring a major redesign of both its aesthetics and functionality.

・The overall app design has been refreshed. On the Home screen, you can choose your preferred style from "Classic," "Editorial," and "Soft."
・"Ask AI" has been added, allowing you to inquire about things that pique your interest on the spot. It will respond after reviewing the day's interactions and your search terms.
・A new tab, "Signs," has appeared. It summarizes the turns in your conversations and your partner's daily rhythms using dates and numbers.
・"Drama Adaptation," "Your Animal Types," and "The Wedding Speech" have been added to the fun AI diagnostics.
・AI diagnostics can now be used in group talks (Field guide, Dramatization, Awards Ceremony, If We Traveled, Group zoo).
・Minor bugs, such as display glitches and choppy scrolling, have been fixed.

### 3.3.3 — 2026-08-14

・Improved AI accuracy.
・Addressed other minor bugs.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*