Only One Calculator vs Suanyi

This calculator has instant currency exchange and unit conversion. With the "Undo" and "Redo" functions, you can go back to the previous steps and edit it. Select a specified currency exchange to be fixed to the calculator. When you input a number or expression, you can instantly know the conversion result, which is convenient for traveling and shopping. Features： • Can select a specified currency exchange and pin it to the calculator. During the input process, you can instantly know the exchange result, which is convenient for travel and shopping. • With the "Undo" and "Redo" functions, the calculator allows you to go back to the previous steps. It keeps up to 300 input steps for your review. So you don't have to worry about re-entering because of any mistakes during input. • Can choose between more than 160 currencies, and the exchange rate is updated manually or automatically per hour, day, or week. • The calculation expression and calculation result are recorded when pressing the equal button or clear button. You can insert the calculation expression or calculation result from a history record into the current calculation expression. • Can edit a very long calculation, and cursor control is very convenient and smooth. • During the input process, the calculation result will be shown instantly without pressing the equal button. • In addition to currency exchange, there are other conversion functions for length, weight, area, volume, and temperature. • If you need the Memory Buttons on traditional calculators, you can add them into the keyboard layout. ** Note: No Scientific Calculation Function. Not suitable for users who need Scientific Calulation. **

【Suanyi】The input text is already in English. It appears no translation is needed — the source text is written entirely in English (US), not Simplified Chinese. Here is the text as-is: Suanyi (算易) is a powerful, all-in-one professional calculator and utility toolbox designed to handle everyday calculations and specialized tasks with ease. Built with a clean, iOS-inspired interface, it brings together essential tools in one place. **Advanced Calculator** Perform standard and scientific calculations with a responsive, intuitive layout. Supports common arithmetic as well as more complex mathematical operations. **Unit Conversions** Convert between a wide range of units across multiple categories, including length, weight, temperature, volume, and more. Results update instantly as you type. **Financial Tools** Access built-in financial utilities for loan calculations, currency references, and other money-related tasks. Helpful for quick estimations on the go. **Utility Toolbox** Go beyond basic math with a collection of practical tools bundled into one app. Each utility is organized for quick access and straightforward use. **Clean, Intuitive Interface** Navigate effortlessly through a visually polished design inspired by modern iOS aesthetics. Every screen is crafted for clarity and ease of use. Whether you need a quick conversion, a detailed financial calculation, or a reliable everyday calculator, Suanyi provides the tools you need in a single, well-organized app. Premium Account Pricing and Terms $ 4.99/week* $ 39.99/year* *Prices shown are in U.S. dollars; actual charges may be converted to your local currency. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be provided. Subscriptions can be managed by the user. Turning off auto-renewal may be done by going to your account settings after purchase. Cancellation of the current subscription is not allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yinweiwei.xyz/suanyi/privacy.html