Comparison

VSimulator vs ZenFuri_Ruby on All Japanese

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

Head to head
About

VSimulator

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ロービジョンの見え方のシミュレーションや逆転視等の体験が出来るアプリ

About

ZenFuri_Ruby on All Japanese

Features
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For supporting individuals with dyslexia (reading and writing disabilities, learning disabilities, dyslexia, dysgraphia) who have difficulty reading kanji and katakana. For those studying Japanese. An app that adds furigana to all kanji and katakana. Features: ■Adds furigana not only to kanji but also to katakana ■Adds furigana and romaji to text in photos from your album (gallery) or taken with your camera ■Adds hiragana to pasted text ■Supports both vertical and horizontal writing Use Cases: •When difficult kanji appear in school textbooks •When legal terms are challenging •When you need to memorize the Japanese Constitution •When you become interested in copying the Heart Sutra •When the consequences of skipping kanji studies in compulsory education catch up with you •When you decide not to study kanji and rely on the app instead •But remember, you can't use the app during tests, so make sure you can read properly •Oops, you came to Tokyo before studying Japanese! Good grief •OH! MY! GOD! Kanji, hiragana, and katakana? Japanese is too crazy! *Internet connection required Web Services by Yahoo! JAPAN (https://developer.yahoo.co.jp/sitemap/)

Screenshots

VSimulator3 screens
ZenFuri_Ruby on All Japanese3 screens

Verdict

The call

The clearest difference is in-app purchases: VSimulator at none against ZenFuri_Ruby on All Japanese's 3. VSimulator also leads on ads (none vs shown). ZenFuri_Ruby on All Japanese's advantage is update cadence (fortnightly vs every 6 weeks). On price, 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. ZenFuri_Ruby on All Japanese sells 3 in-app purchases, starting at $1.99 per month. VSimulator asks for nothing beyond the download.

UpkeepUpdate frequency

VSimulator ships an update every 6 weeks, ZenFuri_Ruby on All Japanese fortnightly. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
VSimulator versus ZenFuri_Ruby on All Japanese: the parameters behind the verdict, then further details
ParameterVSimulatorZenFuri_Ruby on All Japanese
PriceFreeFree
Update frequencyEvery 6 weeksFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size108 MB49 MB
Age rating4+4+
DeveloperYasushi NakanoKoji Watanabe

In-app purchases

None

VSimulator

No in-app purchases

3 purchases

ZenFuri_Ruby on All Japanese

Subscriptions2
  • Ad-Free Subscription$1.991 Month
  • Ad-Free Subscription$12.991 Year
One-time1
  • Donate$4.99

Questions

Is VSimulator free?
VSimulator is free to download, with no in-app purchases.
Is ZenFuri_Ruby on All Japanese free?
ZenFuri_Ruby on All Japanese is free to download, with in-app purchases available.
Do VSimulator or ZenFuri_Ruby on All Japanese have ads?
ZenFuri_Ruby on All Japanese shows ads; VSimulator does not.
Which is updated more often, VSimulator or ZenFuri_Ruby on All Japanese?
VSimulator ships an update every 6 weeks, and ZenFuri_Ruby on All Japanese fortnightly. Most recently, VSimulator was updated on October 25, 2026 and ZenFuri_Ruby on All Japanese on October 25, 2026.

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