Comparison

Sentence Samurai vs Onoma Step

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

Head to head
About

Sentence Samurai

Practice Japanese sentences tailored to your JLPT level, from N5 to N1. Features include furigana toggling, AI translations, and an offline dictionary. Improve reading comprehension and pronunciation with speech-to-text and manga OCR.

Highlights
  • Customizable JLPT level sentences
  • Furigana toggle
  • AI-powered translations
  • Offline Japanese dictionary
  • Speech-to-text pronunciation practice
  • Manga reader with OCR
Features
Read full description

Master Japanese through immersive sentence practice. Generate custom sentences at your JLPT level (N5-N1), with furigana readings, AI-powered translations, and integrated dictionary lookups. Perfect for building real-world comprehension skills. FEATURES: - Generate practice sentences tailored to your JLPT level (N5 through N1) - Toggle furigana readings on/off to test your kanji knowledge - AI-powered English translations and grammar breakdowns - Built-in offline Japanese dictionary with tap-to-lookup - Bookmark sentences for later review - Speech-to-text for pronunciation practice - Manga reader with OCR-powered Japanese text extraction - Cloud backup to sync your progress across devices - Sign in with Apple or email Whether you're just starting with hiragana or preparing for the JLPT N1, Sentence Samurai adapts to your level and helps you build real reading comprehension through practice.

About

Onoma Step

Features
Read full description

Master Japanese Onomatopoeia with Onoma Step! Learn over 1,200 Japanese onomatopoeia (擬音語) and mimetic words (擬態語) - essential vocabulary that brings your Japanese to life! KEY FEATURES 1,200+ Authentic Words • Curated from JMdict, Japan's most trusted dictionary • Covers sounds, emotions, movements, and states • Real Japanese sentences for context Quiz Mode • Test your knowledge • Multiple choice questions • Track your scores PERFECT FOR • JLPT N3-N1 learners • Manga and anime fans • Anyone wanting natural Japanese • Intermediate to advanced students DATA SOURCE All vocabulary data is sourced from JMdict, the renowned Japanese-English dictionary project, ensuring accuracy and reliability.

Screenshots

Sentence Samurai3 screens
Onoma Step4 screens

Verdict

The call

The clearest difference is in-app purchases: Sentence Samurai at none against Onoma Step's 1. Sentence Samurai also leads on ads (none vs shown). Onoma Step's advantage is iOS requirement (13.0 vs 16.0). On price and device support 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. Onoma Step sells 1 one-off in-app purchase. Sentence Samurai asks for nothing beyond the download.

Scorecard3 real differences · 6 level
Sentence Samurai versus Onoma Step: the parameters behind the verdict, then further details
ParameterSentence SamuraiOnoma Step
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequency—Every 2 days
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size75 MB23 MB
Age rating17+4+
DeveloperFrederick IgeJIHUN JO

In-app purchases

None

Sentence Samurai

No in-app purchases

1 purchases

Onoma Step

One-time1
  • Remove Ads$1.99

Questions

Is Sentence Samurai free?
Sentence Samurai is free to download, with no in-app purchases.
Is Onoma Step free?
Onoma Step is free to download, with in-app purchases available.
Do Sentence Samurai or Onoma Step have ads?
Onoma Step shows ads; Sentence Samurai does not.

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