Sakura 万能单位换算 vs Simple Convert

万能单位换算是一款离线单位换算工具，支持长度、质量、面积、温度、体积、速度、数据和手动汇率。首版不需要登录，不接入后端，所有数据只保存在本机。

Simple Convert is a clear and privacy-minded converter for everyday life, study, travel, work, and international shopping. Enter a value, choose a unit or currency, and see the result immediately. Use Multi-Unit Comparison when you need to compare the same value across every unit in a category. **Key features** **Unit conversion | Common categories** Convert length, area, volume, mass, temperature, speed, time, data, pressure, and energy. Unit calculations run on your device and work offline. **Multi-Unit Comparison | See every result** Enter one value and view all units in the selected category at once. Change the input unit and copy any individual result. **Exchange rates | Reference conversion and trends** Convert common currencies including CNY, USD, EUR, JPY, GBP, and HKD. View reference rates, quick amounts, and a 31-day calendar history trend. **Saved pairs | Convert faster next time** Save frequently used unit pairs and currency pairs. The app remembers your recent unit and currency selections on this device. **Recent conversions | Return to your last result** Recent unit conversions are stored locally. Tap a record to restore its category, units, and input value. **Copy and share | Take the result with you** Copy a complete conversion result or share unit and exchange-rate information using the system share sheet. **Private by design | Stored on your device** No account or sign-in is required. Simple Convert does not include advertising, behavioral analytics, or cross-app tracking SDKs. Unit conversions, history, saved pairs, and settings stay on this device. Exchange rates are public reference data from Frankfurter / ECB. They are for general information only and do not represent bank, cash, or transaction rates. Spreads, fees, taxes, and investment advice are not included. Weekends and holidays may not have a new quote; the app shows the latest available quote date.