III vs 夏恩英语
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
III
Calculate material properties for III-V compound semiconductors like AlGaInAsP. It determines compositions, lattice constant, strain, bandgap, and effective masses for InP or GaAs substrates.
- III-V compound semiconductor calculations
- Material property determination
- Composition calculation (x, y, z)
- Lattice constant and strain analysis
- Bandgap and effective mass calculation
- Supports InP and GaAs substrates
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Application to calculate the compositions and material properties of a III-V compound semiconductor. Either InP or GaAs is assumed for the substrate. Some of the compositions and material parameters of the AlGaInAsP compound semiconductor are specified to determine the remain unknown parameters. The following properties are shown as a result: compositions (x, y, z), lattice constant, strain, bandgap, relative energy positions of the conduction and valence bands, and effective masses of the electron and holes.
夏恩英语
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[夏恩英语]采用先进的教育理念为青少年打造英语教育： *快乐听*：良好的用户体验来提高学员的语感，让学员随时随地沉浸在英语环境中。 *班级*：强大的班级体系，将课后作业布置、复习、提交、批改以及成长体系记录其中，全方位提高孩子的英文水平。 *作品秀*：让学员分享自己学习的喜悦，促进孩子们的交流和学习。
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Verdict
The clearest difference is price: 夏恩英语 at Free against III's $2.99. 夏恩英语 also leads on rating (5.0 vs 4.0) and update cadence (every 2 months vs every 17 months). III's advantage is iOS requirement (11.0 vs 13.0). On ratings volume, ads, in-app purchases 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
夏恩英语 is free to download; III costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
夏恩英语 holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
III ships an update every 17 months, 夏恩英语 every 2 months. The most recent releases landed on August 24, 2026 and August 27, 2026 respectively.
| Parameter | III | 夏恩英语 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 17 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 10 MB | 494 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | 皊 董 |
Customer experience
III
夏恩英语
In-app purchases
III
No in-app purchases
夏恩英语
No in-app purchases
