III vs IELTS Practice | Test
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.
IELTS Practice | Test
Prepare for the IELTS exam with a comprehensive learning app. It offers practice for listening, speaking, reading, and writing, along with reading materials and essay correction services. Advanced speech recognition provides real-time feedback on pronunciation and fluency.
- IELTS listening, speaking, reading, writing practice
- Detailed explanations and tips
- Extensive English reading materials
- Speaking practice with real-time scoring
- Professional essay correction services
- Speech recognition for pronunciation feedback
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Preparing for the IELTS? No need to search for resources everywhere! Our IELTS Learning App provides a one-stop solution that offers effective training and improvement in listening, speaking, reading, and writing. Whether you are a beginner or a high-score aspirant, this app meets your needs. Key Features: Comprehensive Practice: Includes practice questions for IELTS listening, speaking, reading, and writing, complete with detailed explanations and practical tips. Rich Reading Materials: Offers a wide range of English reading books suitable for learners at all levels, enhancing language perception and comprehension skills. Speaking Practice with Follow-Along and Real-Time Scoring: Utilizes advanced speech recognition technology to simulate the exam environment for speaking practice, providing immediate feedback on pronunciation and fluency to help you improve accurately. Professional Essay Correction: Our team of experienced teachers provides essay correction services, offering specific suggestions for improvement and scores to help elevate your writing. We are committed to helping every IELTS candidate save time and improve learning efficiency. Download now and let us step together towards your ideal IELTS score! IELTS Practice Membership Agreement https://docs.qq.com/doc/DVXZveWdSTWpxVnRX IELTS Practice Privacy Policy https://docs.qq.com/doc/DVVN5T25TcVBZcGRz IELTS Practice User Agreement https://docs.qq.com/doc/DVU1rUEVWQWRmdmdF
Screenshots
Verdict
The clearest difference is review sentiment: III at 100% against IELTS Practice | Test's 50%. III also leads on in-app purchases (none vs 5) and iOS requirement (11.0 vs 15.0). IELTS Practice | Test's advantage is price (Free vs $2.99) and rating (5.0 vs 4.0). 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
IELTS Practice | Test is free to download; III costs $2.99 up front. IELTS Practice | Test sells 5 in-app purchases, starting at $29.99 per month. III asks for nothing beyond the download.
IELTS Practice | Test holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 100% of III's written reviews are positive against 50% of IELTS Practice | Test's, so the app with the better star average is not the one people write more warmly about.
III ships an update every 17 months, IELTS Practice | Test every 2 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.
| Parameter | III | IELTS Practice | Test |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 17 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Takuya Ishikawa | 志桂 李 |
Customer experience
III
IELTS Practice | Test
In-app purchases
III
No in-app purchases
IELTS Practice | Test
- VIP$29.991 Month
- VIP$49.993 Months
- VIP$99.991 Year
- Lecture IELTS 6 points$99.99
- Écriture IELTS 6 points$99.99
Questions
Is III free?
Is IELTS Practice | Test free?
Which has better reviews, III or IELTS Practice | Test?
Do III or IELTS Practice | Test have ads?
Which is updated more often, III or IELTS Practice | Test?
Other comparisons
