III vs 高中化学
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.
高中化学
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考神君【高中化学】实验课堂辅导，百万题库冲刺闯关 总结全科同步知识辅导，汇编各类常考题型。筛选各类专题化学常考集锦，分分钟带领孩子从化学小白开始入门揭开化学的神秘面纱；更全面的板块学习，居家课后辅导不是难题！ 家长放心的【孩子同步复习课堂】 1.从实验学化学 2.化学物质及其变化 3.物质结构、化学元素周期表 ...... 课堂讲的没明白，课后打开手机立刻复习 ~ 吃定化学不会是难题！ 【百万题库智能分配】 1.针对性复习，闯关模式，包含各地考试题型，复习方方面面； 2.专题同步，深入学习，搞定一个知识点，轻松复习全科知识； 3.碎片化时间复习，一部手机，时时刻刻就能学，把握住孩子的每个冲刺时刻； 考神君用心陪伴孩子整个高中时刻，助孩子一臂之力！！
Screenshots
Verdict
The clearest difference is price: 高中化学 at Free against III's $2.99. 高中化学 also leads on update cadence (every 5 months vs every 17 months). III's advantage is in-app purchases (none vs 5) and iOS requirement (11.0 vs 13.0). On 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
高中化学 is free to download; III costs $2.99 up front. 高中化学 sells 5 one-off in-app purchases. III asks for nothing beyond the download.
III ships an update every 17 months, 高中化学 every 5 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | III | 高中化学 |
|---|---|---|
| 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 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 10 MB | 168 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | GUANGZHOU XIANGQI CO.,LTD. |
In-app purchases
III
No in-app purchases
高中化学
- 100能量球$0.99
- 300能量球$1.99
- 化学单科会员$1.99
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- 500能量球$2.99
- 全科会员$4.99
