Comparison

CatEar vs Onsei

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

Head to head
About

CatEar

Enhance your auditory perception with scientifically designed modules. Improve speech recognition, practice with various sound simulations, and track your progress with detailed records. Includes tools for hearing tests and noise detection.

Highlights
  • Speech recognition training
  • Noise interference practice
  • Telephone voice simulation
  • Musical instrument timbre practice
  • Progress tracking
  • Noise detection
  • Hearing tests
Features
Read full description

CatEar is a professional listening training application designed for individuals with hearing impairments, language learners, and anyone looking to improve their listening skills. With scientifically effective training modules, the app helps users steadily enhance their speech recognition ability, offering a better auditory experience. Core Features: The app includes existing speech training content, such as single-syllable word training, noise interference training, telephone voice simulation, musical instrument timbre practice, and more. Detailed historical records to track your training progress! Additional tools related to hearing, such as noise detection, hearing tests, and hearing chart records. Legal Terms: This app complies with Apple's standard software licensing agreement (EULA). Please visit https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ for more details.

About

Onsei

Features
Read full description

Onsei is a Japanese learning app designed for focused daily study. Build vocabulary and grammar with spaced repetition, clear review flows, native audio, and scenario-based practice that helps you turn study into real usage. Features: • Vocabulary and grammar review • Spaced repetition scheduling • Daily study sessions and progress tracking • Japanese audio playback • Optional account sync across devices • Scenario-based practice for everyday situations

Screenshots

CatEar4 screens
Onsei3 screens

Verdict

The call

The clearest difference is in-app purchases: Onsei at none against CatEar's 4. Onsei also leads on iOS requirement (15.1 vs 17.0). CatEar's advantage is update cadence (every 2 days vs every 10 days). On price, ads 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. CatEar sells 4 in-app purchases, starting at $4.99 per year. Onsei asks for nothing beyond the download.

UpkeepUpdate frequency

CatEar ships an update every 2 days, Onsei every 10 days. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 6 level
CatEar versus Onsei: the parameters behind the verdict, then further details
ParameterCatEarOnsei
PriceFreeFree
Rating3.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size273 MB33 MB
Age rating4+12+
Developer雄杰 杨鑫 陈

In-app purchases

4 purchases

CatEar

Subscriptions2
  • 包年$4.991 Year
  • 包月$6.991 Month
One-time2
  • 红心补充包(10颗)$0.99
  • Lifetime$19.99
None

Onsei

No in-app purchases

Questions

Is CatEar free?
CatEar is free to download, with in-app purchases available.
Is Onsei free?
Onsei is free to download, with no in-app purchases.
Do CatEar or Onsei have ads?
Neither CatEar nor Onsei shows ads.
Which is updated more often, CatEar or Onsei?
CatEar ships an update every 2 days, and Onsei every 10 days. Most recently, CatEar was updated on October 4, 2026 and Onsei on October 6, 2026.

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