Comparison

Simeji vs IsTalk

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

Head to head
About

Simeji

This keyboard app offers a customizable Japanese input experience with a vast library of emoticons, emoji, and stickers. It features a cloud-based dictionary for up-to-date slang and phrases, along with options to personalize your keyboard's appearance. Advanced users can enjoy VIP features like OCR and unlimited theme customization.

Highlights
  • Skinnable keyboard with custom wallpapers and themes
  • Extensive emoticon and emoji library with rankings
  • Cloud-based dictionary with 2M entries
  • Preset and user-shared phrases
  • Popular Simeji stickers
  • VIP exclusive themes and custom parts
  • OCR function for text conversion
Features
Read full description

Simeji is a free Japanese input keyboard that has reached over 39M downloads! It comes with a skinnable keyboard, cute emoticons, emoji, and more! This is the most popular keyboard app in Japan! Try it today! Simeji is a keyboard with these features! Skinnable keyboard - Add a wallpaper to your keyboard using a photo,image and video. - Chock-full of keyboard themes! - Also lots of features to change your text color and decorate your flick keyboard. Use cute emoticons and emoji - See the emoticon and emoji rankings to find the most popular ones! - Popular emoticons can be inserted immediately and let you add some spice to your chats on LINE, Twitter, and Facebook! Robust Japanese input and conversion features - The cloud-based dictionary contains 2M entries, covering everything from anime slang to the latest buzzwords - Lots of preset phrases you can use for Nico Nico, in-game chat, telling someone you're late, and more - As requested by users, the "Fun conversion" feature has now been added! There's also the "Everyone's Dictionary" feature, which lets you share cute emoticons with others. Easy keyboard input - Rapidly switch from the top of the keyboard to select emoticons, emoji, numerals, and special characters Popular Simeji stickers - Comes with the popular set of Simeji stickers New fun stickers are being uploaded by users every day! These cool stickers are free to use! [Simeij VIP] Plan 1) Simeji VIP monthly 400 yen / month 2) Simeji VIP 12 month 200 yen / month (2,400 yen per year) 50% OFF every year [About automatic renewal and cancellation] Free trial is only available when you register for VIP for the first time in the App Store. After the free trial, you will be automatically charged 400 yen per month. A monthly fee will be charged within 24 hours before the end of the subscription period. Unless canceled at least 24 hours before the end of the subscription period, your subscription will automatically continue. Payment will be charged to Apple ID account. Deleting an app does not cancel your subscription. Cancellation procedure cannot be performed on the Simeji App side. Please manage or cancel your subscription in your App Store account settings. Benefits VIP exclusive theme Unlimited use VIP special theme -Unlimited use of luxury keyboard custom parts theme and deco parts are upgraded for VIP only -Unlimited photo theme settings No need to organize when you create a new photo theme VIP fixed phrase & reverse lookup dictionary -You can select frequently used sentences incrementaly. VIP backup -Easy backup of user user dictionary OCR function -You can convert and save text and text when you take a picture of the screen or paper. Remove ads -Smooth input operations! * VIP exclusive theme function is not available on iPad. Please note. The information desk - Customer Support (simeji_support@baidu.com) Business hours: Monday to Friday 10: 00-18: 00 (excluding Saturdays, Sundays and holidays, and our designated holidays) * The contract for this service is automatically renewed. You will be automatically charged for renewal on a service-provided basis until the customer is suspended on the AppStore. * If the service is in the free trial period, the free period ends when you apply for the service. - Terms of use https://simeji.me/termofuse/ - Privacy Policy https://simeji.me/privacy/ - Display based on the Specified Commercial Transaction Law https://stat.ime.baidu.jp/page/terms/ios/premium/index.html

About

IsTalk

Analyze LINE chat content to understand your connection and compatibility with others. Discover communication habits, frequently used phrases, and more, all processed securely offline. Unlock deeper insights with AI-driven relationship mapping and detailed compatibility assessments.

Highlights
  • Offline LINE chat analysis
  • Compatibility diagnosis
  • AI Relationship Mapping
  • Habit and behavior screens
  • Time-series communication trends
  • Customizable analysis icons
  • Group chat analysis (aggregation only)
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

Simeji4 screens
IsTalk4 screens

Verdict

The call

The clearest difference is rating: IsTalk at 5.0 against Simeji's 4.6. IsTalk also leads on update cadence (every 3 days vs every 2 weeks). Simeji's advantage is ratings volume (1.2K vs 2) and review sentiment (64% vs 49%). On price, ads, in-app purchases and monetization model 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. Simeji sells 18 in-app purchases, starting at $1.99 per month and IsTalk sells 9 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

IsTalk holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Simeji has 1.2K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 64% of Simeji's written reviews are positive against 49% of IsTalk's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Simeji ships an update every 2 weeks, IsTalk every 3 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Simeji versus IsTalk: the parameters behind the verdict, then further details
ParameterSimejiIsTalk
PriceFreeFree
Rating4.6 (1.2K ratings)5.0 (2 ratings) — better
Positive reviews64.2% of reviews — better49.0% of reviews
Number of ratings1.2K — better2
Update frequencyEvery 2 weeksEvery 3 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size199 MB133 MB
Age rating4+4+
DeveloperBaidu Japan Inc.REALBIND .inc

Customer experience

Simeji

All ratings1,200 ratings
Positive89.2%
Neutral5.5%
Negative5.3%
Written reviews159 reviews
Positive64.2%
Neutral11.3%
Negative24.5%

IsTalk

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

User reviews

Simeji

From 1.2K App Store ratings

What we love

  • 🚀 No ads for keyboard
  • 👍 More keyboards than Facemoji
  • 👍 Easy to switch between English and Japanese
  • 👍 Includes kaomojis and GIFs
  • 👍 Cute/better-looking keyboards

Room to improve

  • 🌐 Only available in Japanese
  • 🤖 Uses AI that is destroying artists' careers

IsTalk

From 2 App Store ratings

What we love

  • ✨ Detailed analysis
  • 🤩 Fun and interesting
  • 🚀 Quick results
  • 👍 Easy LINE integration
  • 💖 Free premium features (ads)

Room to improve

  • 📉 Inaccurate data counts
  • 🐌 App performance issues
  • 🔋 Phone gets hot/slow
  • ❌ Limited analysis period
  • 🪲 Crashes frequently

Bugs and requests

Simeji

Reported bugs

3 issues
  • Keyboard keeps asking for full access
  • Saved emojis/emoticons disappear
  • Intrusive popup ads

Requested features

4 requests
  • Add English language support
  • Improve QWERTY keyboard layout
  • Add auto-capitalization feature
  • Introduce simplified and traditional Chinese keyboards

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

18 purchases

Simeji

Subscriptions10
  • 月間会員7 Days trial$1.991 Month
  • Simeji月間 VIP$2.991 Month
  • Simeji 月間VIP1 Month trial$2.991 Month
Show 7 more
  • Simeji VIP Lv1 1ヶ月コース(初月半額)1 Month trial$2.991 Month
  • 月額会員7 Days trial$3.491 Month
  • プレミアムサービス$9.996 Months
  • Simeji VIP7 Days trial$15.991 Year
  • 年間会員7 Days trial$21.991 Year
  • Simeji VIP年間会員$30.991 Year
  • Simeji VIP Lv2 年間コース$199.991 Year
One-time8
  • ガーリーうさぎ$1.99
  • クールブルー$1.99
  • ゆめかわユニコーン$1.99
Show 5 more
  • ユリ$1.99
  • クラシックピアノ$1.99
  • きらきらジュエリー シルバー$1.99
  • 白薔薇切り絵$1.99
  • [有料]まふまふきせかえ$2.99
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 Simeji free?
Simeji is free to download, with in-app purchases available.
Is IsTalk free?
IsTalk is free to download, with in-app purchases available.
Which has better reviews, Simeji or IsTalk?
IsTalk is rated higher. Simeji averages 4.6 out of 5 from 1.2K ratings, while IsTalk averages 5.0 from 2 ratings.
Do Simeji or IsTalk have ads?
Both Simeji and IsTalk show ads.
Which is updated more often, Simeji or IsTalk?
Simeji ships an update every 2 weeks, and IsTalk every 3 days. Most recently, Simeji was updated on November 1, 2026 and IsTalk on October 30, 2026.

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