Hardness Conversion Master vs 猫眼精灵
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
猫眼精灵
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猫眼精灵,专为养猫铲屎官打造的精细化猫咪全周期管理工具,一站式记录猫咪喂养、日常护理、健康档案,轻松科学照料每一位毛孩子。 【喂养台账精细化记录】创建专属猫咪电子档案,精准记录每日喂食克数、饮水数据,干粮、罐头、湿粮分类存档;内置猫咪相册留存萌宠日常,自动生成生日、血统备忘,多猫家庭也能清晰区分每只猫咪饮食数据,把控科学喂食量。 【日常护理一键打卡】洗澡、梳毛、剪指甲、耳道清洁、猫砂更换全流程台账记录,自动统计护理频次与周期,再也不会错过猫咪定期打理,清晰留存每一次养护细节,省心管理居家洗护工作。 【完整健康档案管理】永久留存疫苗、体内外驱虫、病历、体重追踪记录,自动生成下次养护提醒;配套入门养宠指南、居家安全常识、猫咪日常观察要点科普,新手铲屎官快速掌握科学养猫知识。 全部数据本地安全存储,操作轻量化简洁易上手。无论是单猫饲养还是多猫家庭,都能借助本工具规范喂养节奏,追踪猫咪长期生长与健康状态,用细致记录守护猫咪健康成长。
Screenshots
Verdict
The clearest difference is in-app purchases: 猫眼精灵 at none against Hardness Conversion Master's 1. 猫眼精灵 also leads on iOS requirement (15.6 vs 17.6). On price, 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
Both are free to download. Hardness Conversion Master sells 1 one-off in-app purchase. 猫眼精灵 asks for nothing beyond the download.
| Parameter | Hardness Conversion Master | 猫眼精灵 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | — |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 259 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | POYU WANG | 梅莲 张 |
In-app purchases
Hardness Conversion Master
- Unlock Pro$1.99
猫眼精灵
No in-app purchases



