Comparison

Lトーーク vs IsTalk

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lトーーク

Analyze and summarize your LINE chat history. Discover your first conversation date, total character count, longest call duration, and more. Supports group chats and open chats. Works even without LINE installed if you have a chat history text file.

Highlights
  • Analyze LINE chat history
  • Summarize conversations
  • Calculate total characters
  • Track longest call duration
  • Supports group chats
  • Supports open chats
  • Works with chat history text files
Read full description

LトーークはLINEのトーク履歴の分析・集計・まとめアプリです。 ・最初にやりとりした日は? ・今までの総文字数は? ・今までの最長通話時間は? などなど、簡単操作で分析できます! グループLINEやオープンチャットにも対応してます(^^) ■使い方 1. LINEアプリを起動し、分析したい相手orグループを選択 2. 「メニュー」>「設定」>「トーク履歴を送信」>を選択 3. 「Lトーーク」を選択 > 読み込みスタート! トーク履歴のテキストファイルがあれば、LINEがインストールされてなくても使えます! ■注意事項 本アプリは非公式アプリです。しがない日本の個人アプリ開発者が一人で作っています。 LINEのトーク履歴を解析しておりますが、トーク履歴・解析結果を外部などに送信は行っておらず、すべて端末内で処理・保存されますので、ご安心してご利用ください。 LINEのテキストバックアップの仕様により、スタンプ・画像などの表示には非対応となります。 トーク履歴が多い場合、読み込みに時間がかかる場合がございます。 ※「LINE」はLINE株式会社の商標または登録商標です。

About

IsTalk

Analyze your LINE chat history to understand your communication patterns and compatibility with others. Discover insights into your conversations, including frequently used phrases, chat times, and relationship dynamics, all processed securely offline.

Highlights
  • LINE chat analysis
  • Compatibility diagnosis
  • Offline processing
  • AI relationship mapping
  • Habit and behavior insights
  • Time-series trend analysis
  • Group chat analysis
Read full description

*:。・*。*:。・*。・*:。・*。*・*。*。*。* 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.

Screenshots

Lトーーク4 screens
IsTalk4 screens

Verdict

The call

The clearest difference is in-app purchases: Lトーーク at none against IsTalk's 9. Lトーーク also leads on review sentiment (79% vs 49%). IsTalk's advantage is update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. IsTalk sells 9 in-app purchases, starting at $1.99 per 7 days. Lトーーク asks for nothing beyond the download.

UpkeepUpdate frequency

Lトーーク ships an update every 3 weeks, IsTalk every 2 days. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Lトーーク versus IsTalk: the parameters behind the verdict, then further details
ParameterLトーークIsTalk
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews79.2% of reviews — better49.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 weeksEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size42 MB147 MB
Age rating4+4+
DeveloperHironori TsumurayaREALBIND .inc

Customer experience

Lトーーク

Written reviews48 reviews
Positive79.2%
Neutral10.4%
Negative10.4%

IsTalk

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews51 reviews
Positive49.0%
Neutral19.6%
Negative31.4%

Bugs and requests

Lトーーク

Not enough reviews yet to summarise bugs or requests.

IsTalk

Reported bugs

15 issues
  • AI accuracy issues (message sender identification)
  • Incorrect call counts
  • Incorrect message counts (e.g., 'w' count)
  • Incorrect 'love word' classification
  • App crashes when analyzing large files
Show 10 more
  • App crashes after ad display
  • Analysis fails with 'unexpected error'
  • LINE integration not responding
  • Data loss after app updates
  • Analysis function not working (returns to results screen)
  • Inability to analyze due to 'insufficient data' despite large chat history
  • Total call time calculation errors
  • Analysis results not updating after calls
  • App crashes when sending files from LINE
  • App crashes when opening LINE from the app

Requested features

10 requests
  • Enable Instagram DM analysis
  • Allow viewing all past LINE messages
  • Improve accuracy of message/call counts
  • Expand analysis period
  • Add dark mode
Show 5 more
  • Improve free point accumulation methods
  • Restore previous analysis data
  • Enable analysis for larger chat volumes
  • Make 'love words' visible for free
  • Add support for more platforms like Instagram

In-app purchases

None

Lトーーク

No in-app purchases

9 purchases

IsTalk

Subscriptions3
  • Premium Plan Weekly$1.997 Days
  • Premium Plan Monthly$2.991 Month
  • Premium Plan Annual3 Days trial$22.991 Year
One-time6
  • 広告の非表示+追加コンテンツ開放Free
  • S- Ticket(10 set)$1.99
  • S- Ticket(20 set)$2.99
Show 3 more
  • S- Ticket(30 set)$3.99
  • S- Ticket(50 set)$6.99
  • S- Ticket(100 set)$11.99

Questions

Is Lトーーク free?
Lトーーク is free to download, with no in-app purchases.
Is IsTalk free?
IsTalk is free to download, with in-app purchases available.
Do Lトーーク or IsTalk have ads?
Both Lトーーク and IsTalk show ads.
Which is updated more often, Lトーーク or IsTalk?
Lトーーク ships an update every 3 weeks, and IsTalk every 2 days. Most recently, Lトーーク was updated on September 19, 2026 and IsTalk on September 23, 2026.

Other comparisons