Comparison

Keigo Pro vs Onomanabi

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

Head to head
About

Keigo Pro

Features
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Master keigo with confidence. Keigo Pro is a practical Japanese learning app designed for learners, professionals, and anyone who wants to use polite Japanese naturally in real situations. Instead of memorizing isolated expressions, youโ€™ll learn how keigo works, when to use it, and how to apply it in business, service, and everyday communication. Whether youโ€™re preparing for work in Japan, writing formal emails, or trying to understand respectful and humble speech more clearly, Keigo Pro helps you build real confidence. What you can do in Keigo Pro: โ€ข Conjugate verbs into ไธๅฏง่ชž, ๅฐŠๆ•ฌ่ชž, and ่ฌ™่ญฒ่ชž See polite, respectful, and humble forms instantly, with clear explanations of who uses each form and when. โ€ข Study with structured courses Learn step by step from beginner to advanced, including keigo foundations, workplace usage, business emails, seasonal greetings, and baito keigo. โ€ข Learn through examples and quizzes Practice with guided lessons, comparisons, interactive quizzes, and real-use scenarios. โ€ข Write better Japanese emails Browse ready-to-use templates with seasonal openings, formal phrasing, and business-friendly expressions. โ€ข Build your phrase library Study essential fixed expressions such as ใŠไธ–่ฉฑใซใชใฃใฆใŠใ‚Šใพใ™, ๆ‰ฟ็Ÿฅใ„ใŸใ—ใพใ—ใŸ, and ใ‹ใ—ใ“ใพใ‚Šใพใ—ใŸ, with usage notes and common mistakes. โ€ข Understand what to avoid Learn common overused or unnatural expressions, including examples of ใƒใ‚คใƒˆๆ•ฌ่ชž and more standard alternatives. โ€ข Study in English or Japanese Use the app in Japanese or in bilingual English-Japanese mode. Keigo Pro is built for people who want more than textbook knowledge. Itโ€™s for learners who want to actually use keigo well. If keigo has ever felt intimidating, this app was made for you. Created by Carlos Ramos, a Japanese teacher who wanted a clearer, more practical way to learn keigo.

About

Onomanabi

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Stop translating. Start feeling. Onomanabi teaches Japanese onomatopoeia โ€” the sound and mimetic words (giongo and gitaigo) that carry nuance no dictionary translation captures. The kana themselves move, so you feel the difference before you read the explanation. Built for intermediate-to-advanced learners (JLPT N3โ€“N1) and Japanese teachers alike. WHY ONOMATOPOEIA "Doki-doki." "Zaa-zaa." "Kira-kira." Japanese is full of words whose real meaning lives in a feeling, not a translation. Onomanabi makes that feeling visible. FEEL IT THROUGH MOTION Every word moves in its own way โ€” spinning, bouncing, stretching, trembling โ€” so you feel the difference between "zaa-zaa" and "para-para" instead of just reading about it. USAGE MAPS Each word sits on a map of nearby words, with axes chosen for the subject: soft to hard for textures, negative to positive for feelings. COMPARISON MODE (PREMIUM) Tap a nearby word on the usage map and the comparison opens right below, with a native note on the decisive difference โ€” the nuance dictionaries flatten out. QUIZZES THAT STICK Multiple quiz types (4-choice, typing, comparison) with mistake-prioritized, spaced-repetition review. LEVELS & COLLECTION A guided six-level path and word-collection progress, plus a daily word to keep you coming back. FOR TEACHERS A category- and level-organized reference for a subject most textbooks barely cover. FREE TO START Levels 1โ€“2, part of the dictionary, and usage maps are free โ€” no account needed. Your progress and reviews are saved on your device. The dictionary, quizzes, and reviews work offline. PREMIUM (ONE-TIME, NOT A SUBSCRIPTION) - 1,500+ words - Levels 3โ€“6 - Comparison mode and comparison quizzes - No further payments, ever Japanese nuance isn't something you translate. It's something you feel. Start with today's word.

Screenshots

Keigo Pro4 screens
Onomanabi4 screens

Verdict

The call

The clearest difference is price: Onomanabi at Free against Keigo Pro's $4.99. Keigo Pro's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement 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

Onomanabi is free to download; Keigo Pro costs $4.99 up front. Onomanabi sells 2 one-off in-app purchases. Keigo Pro asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Keigo Pro versus Onomanabi: the parameters behind the verdict, then further details
ParameterKeigo ProOnomanabi
Price$4.99Free โ€” better
Update frequencyโ€”Every 6 days
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 โ€” better
Further details โ€” not scored
Size2 MB93 MB
Age rating4+4+
DeveloperCarlos Ramos FuentesTakeshi Nogi

In-app purchases

None

Keigo Pro

No in-app purchases

2 purchases

Onomanabi

One-time2
  • Onomanabi Premium (Welcome)$11.99
  • Onomanabi Premium$14.99

Questions

Is Keigo Pro free?
Keigo Pro costs $4.99, with no in-app purchases.
Is Onomanabi free?
Onomanabi is free to download, with in-app purchases available.
Do Keigo Pro or Onomanabi have ads?
Neither Keigo Pro nor Onomanabi shows ads.

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