Comparison

On vs Yomibuddy

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

Head to head
About

On

Features
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- Generate subtitle from sound of the videos with targeted language. - Translate into your desired language in Real-time.

About

Yomibuddy

Features
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Yomibuddy turns any printed page in front of you into a tappable, translatable, AI-assisted reading experience. Photograph a page from a book, a comic, a magazine, or a sign. Yomibuddy uses Google Cloud Vision to detect every sentence on the page โ€” including vertical Japanese (tategaki), handwritten fonts, and dense textbook layouts with furigana. Each sentence becomes a tappable region on the photo. Tap a sentence to instantly see its translation in your target language. Need more help? Open a chat thread tied to that exact sentence and ask anything โ€” grammar breakdowns, alternate translations, cultural context, vocabulary, kanji readings. Each sentence keeps its own chat history. Highlights: โ€ข On-photo translation overlay โ€” tap any sentence on the original page. โ€ข Powered by Google Cloud Vision OCR + your choice of frontier LLM (Gemini, Claude, or GPT) for translation and chat. โ€ข Built-in trial keys so you can start immediately, no setup required. โ€ข 20-page rolling library โ€” captured pages and chat threads persist locally on your device. โ€ข Vertical Japanese, handwritten typography, picture books, and densely typeset textbook pages all work. โ€ข Pre-translates the whole page on capture so tapping a sentence is instant. Designed for language learners reading native-language content who want help without losing the joy of reading the original.

Screenshots

On2 screens
Yomibuddy4 screens

Verdict

The call

The clearest difference is update cadence: Yomibuddy at every 3 days against On's every 2 months. On's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

On ships an update every 2 months, Yomibuddy every 3 days. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.

Scorecard2 real differences ยท 4 level
On versus Yomibuddy: the parameters behind the verdict, then further details
ParameterOnYomibuddy
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 โ€” better17.0
Further details โ€” not scored
Size68 MB84 MB
Age rating4+4+
DeveloperRatthamontree BurimasENSHIN K.K.

In-app purchases

None

On

No in-app purchases

None

Yomibuddy

No in-app purchases

Questions

Is On free?
On is free to download, with no in-app purchases.
Is Yomibuddy free?
Yomibuddy is free to download, with no in-app purchases.
Do On or Yomibuddy have ads?
Neither On nor Yomibuddy shows ads.
Which is updated more often, On or Yomibuddy?
On ships an update every 2 months, and Yomibuddy every 3 days. Most recently, On was updated on September 30, 2026 and Yomibuddy on October 11, 2026.

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