III vs 研才教育
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.
研才教育
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-高效对接，各类考试资讯先人一步； -消息提醒，精彩内容一秒不会落下； -真人课堂，随时随地，资深老师高效互动； -相关资料，海量题库，真题密料谁不要？ -研才教育，考研成才，就在研才
Screenshots
Verdict
The clearest difference is price: 研才教育 at Free against III's $2.99. 研才教育 also leads on update cadence (every 2 weeks vs every 17 months). III's advantage is in-app purchases (none vs 4). On ads, 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
研才教育 is free to download; III costs $2.99 up front. 研才教育 sells 4 one-off in-app purchases. III asks for nothing beyond the download.
III ships an update every 17 months, 研才教育 every 2 weeks. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.
| Parameter | III | 研才教育 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 17 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 10 MB | 177 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | Guangzhou Yancai Culture Communication Co., Ltd |
In-app purchases
III
No in-app purchases
研才教育
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- 【JY】面试直通班$349.99
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- 【JY】笔面尊享班$399.99
