CalcMemo929 vs Hardness Conversion Master
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
CalcMemo929
This app combines a simple calculator with note-taking capabilities, allowing users to solve math problems and save calculation processes as memos for easy reference. Its user-friendly interface and clear display enhance the learning and work experience.
- Intuitive user interface
- Clear display of calculations
- Save calculations as memos
- Full-screen number display in landscape
- Supports learning and work tasks
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CalcMemo: Integrating Simple Calculations and Memos Innovatively CalcMemo is designed to make your calculations intuitive and efficient. By seamlessly integrating calculations with note-taking, CalcMemo aids users in solving mathematical problems and enriching their learning experience. With CalcMemo, take your calculating experience to the next level. [Key Features] A user-friendly interface that enables intuitive operation. Clear display that allows you to understand complex calculation processes at a glance. The ability to save calculation processes as memos for easy reference later. In landscape mode, the selected numbers can be displayed across the entire screen for easy detailed viewing. CalcMemo is here to support your learning and work. Give it a try, and you'll experience how it smoothens your calculation process.
Hardness Conversion Master
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A professional hardness conversion tool designed for mechanical engineering, metal heat treatment, and quality management, providing quick, stable, and traceable engineering reference data. **Key Features** 1. **Industrial-Grade Precision** The conversion logic is based on ASTM E140 / ASTM A370 standards, utilizing high-density reference points and linear interpolation to deliver stable and reproducible conversion results. 2. **Flexible Input and Real-Time Synchronization** Allows direct input in any hardness field (e.g., HRC / HV / HBW), with real-time conversion across other units, enhancing on-site operational efficiency. 3. **Physical Range Protection Mechanism** Built-in effective range checks for each scale, displaying "No Reference Value" when out of range, reducing the risk of misinterpretation. 4. **Customizable Interface** Enables toggling unit displays and drag-and-drop sorting to create a workspace tailored to individual or production line processes. 5. **Image Conversion (Beta)** Supports photo/album import, area selection recognition, result comparison, and manual correction, suitable for quick conversion of reports and on-site records. 6. **Batch Conversion** Allows multiple data entries for rapid conversion, retaining the last used unit preference to minimize repetitive actions. **Supported Units** - Rockwell: HRC, HRA, HRB, HRD, HRF - Superficial Rockwell: HR15N, HR30N, HR45N, HR15T, HR30T, HR45T - Brinell: HB, HBW - Vickers: HV - Tensile Strength: MPa
Screenshots
Verdict
The clearest difference is ads: CalcMemo929 at none against Hardness Conversion Master's shown. Hardness Conversion Master's advantage is update cadence (every 3 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. CalcMemo929 sells 1 one-off in-app purchase and Hardness Conversion Master sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CalcMemo929 ships an update every 2 weeks, Hardness Conversion Master every 3 days. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.
| Parameter | CalcMemo929 | Hardness Conversion Master |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | โ |
| Update frequency | Every 2 weeks | Every 3 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | โ |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 โ better | 17.6 |
| Further details โ not scored | ||
| Size | 1 MB | 259 MB |
| Age rating | 4+ | 4+ |
| Developer | YOSHIHIRO TAKAHASHI | POYU WANG |
In-app purchases
CalcMemo929
- Premium Plan$0.49
Hardness Conversion Master
- Unlock Pro$1.99
Questions
Is CalcMemo929 free?
Is Hardness Conversion Master free?
Do CalcMemo929 or Hardness Conversion Master have ads?
Which is updated more often, CalcMemo929 or Hardness Conversion Master?
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