Comparison

中学生 英単語帳 vs Optical Path

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

Head to head
About

中学生 英単語帳

This app offers a straightforward way to learn English vocabulary for junior high students. It features flashcards with audio pronunciation, a "learned" function for efficient memorization, and an auto-play mode for passive learning.

Highlights
  • Simple and intuitive design
  • 1,200 pre-loaded vocabulary cards
  • Mark words as 'learned'
  • Audio pronunciation playback
  • Automatic audio and card flipping for passive learning
Features
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・シンプルな設計で、直感的に操作できます。カードの設定も簡単! ・収録された1,200枚の単語カードから、学習したいものを選ぶだけですぐに使えます。 ・「覚えた」ボタンを押せば、めくった側のカードを非表示にでき、効率的に暗記が可能。 ・カード上のスピーカーボタンを押せば、発音をいつでも再確認できます。 ・設定で**「自動音声ON」**にし、自動めくりを使えば、聞き流し学習もOK!

About

Optical Path

Features
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This program is designed to illustrate the laws of reflection and refraction of light. As the laser pointer moves, the laser beam enters from the upper medium into the lower medium. When the two media differ, both reflection and refraction phenomena occur. When the refractive index of the upper medium is greater than that of the lower medium, and the angle of incidence exceeds the critical angle, a fascinating total internal reflection can be observed. This program is suitable for primary and secondary school students to learn and understand the laws of reflection and refraction of light, allowing them to review and reinforce physics concepts through engaging interactive activities. It can also be utilized by teachers for classroom demonstrations, enhancing lessons with a more lively and dynamic approach. The program's key features include: 1. Demonstration of reflection and refraction laws when the upper and lower media differ: The angle of reflection equals the angle of incidence, and the ratio of the sines of the angles of incidence and refraction equals the ratio of the refractive indices of the lower and upper media. 2. Demonstration of total internal reflection when the refractive index of the upper medium is greater than that of the lower medium: When the angle of incidence exceeds the critical angle, all incident light is reflected back, with no refracted light. 3. Selection of five laser colors - red, blue, green, orange, and purple - each corresponding to a unique refractive index. Lasers with higher frequencies exhibit greater refractive indices.

Screenshots

中学生 英単語帳4 screens
Optical Path4 screens

Verdict

The call

The clearest difference is price: 中学生 英単語帳 at Free against Optical Path's $1.99. 中学生 英単語帳 also leads on update cadence (every 2 months vs every 12 months). Optical Path's advantage is ads (none vs shown). On in-app purchases, 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

中学生 英単語帳 is free to download; Optical Path costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

中学生 英単語帳 ships an update every 2 months, Optical Path every 12 months. The most recent releases landed on September 25, 2026 and September 16, 2026 respectively.

Scorecard3 real differences · 7 level
中学生 英単語帳 versus Optical Path: the parameters behind the verdict, then further details
Parameter中学生 英単語帳Optical Path
PriceFree — better$1.99
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 12 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.4 — better15.6
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperSHINA NAKAMURA坤 冉

In-app purchases

None

中学生 英単語帳

No in-app purchases

None

Optical Path

No in-app purchases

Questions

Is 中学生 英単語帳 free?
中学生 英単語帳 is free to download, with no in-app purchases.
Is Optical Path free?
Optical Path costs $1.99, with no in-app purchases.
Do 中学生 英単語帳 or Optical Path have ads?
中学生 英単語帳 shows ads; Optical Path does not.
Which is updated more often, 中学生 英単語帳 or Optical Path?
中学生 英単語帳 ships an update every 2 months, and Optical Path every 12 months. Most recently, 中学生 英単語帳 was updated on September 25, 2026 and Optical Path on September 16, 2026.

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