# 计算器Pro > No ads, open the calculator in seconds! It has small memory and accurate calculations, and can solve various complex calculations and conversions. Switch between dark and light modes at any time~You can get the calculation results in real time without entering =~You can make notes on the historical records~ Canonical page: [https://chrome-stats.com/d/com.doudoubird.calculation](https://chrome-stats.com/d/com.doudoubird.calculation) ## Overview - **ID:** `com.doudoubird.calculation` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Beijing Doudouniao Technology Co., Ltd. - **Category:** TOOLS - **Downloads:** 81 - **Version:** 2.2.4 - **Last updated:** 2025-02-21 - **First published:** 2025-02-16 - **Publisher country:** CN - **Size:** 3.40 MB - **Data as of:** 2026-09-09 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.doudoubird.calculation) - **Privacy policy:** [https://www.doudoubird.com/appchanneldata/ddn\_privacy](https://www.doudoubird.com/appchanneldata/ddn_privacy) ## Description Function introduction:
The minimalist standard type and the powerful scientific computing type can be quickly switched to meet different needs~
【Standard Calculator】
1) It supports basic operations such as addition, subtraction, multiplication and division that are used in daily life. It is easier to use than the built-in calculator and is easy to operate.
2) Supports copying and pasting functions of calculation formulas and results,
3) Supports viewing history function for easy viewing at any time. No matter how complicated the process is, you will never be mistaken. The historical process is completely saved and the historical records can be re-edited.
4) Supports the function of converting numbers to uppercase. One-click copy will convert calculation results into uppercase, which facilitates communication and financial reimbursement, and is more convenient to use. 5) Supports voice reporting and key vibration, which highly restores the experience of a physical calculator. Financial and accounting calculations are accurate without worrying about entering wrong numbers.
6) Edit the input box again, drag the cursor arbitrarily, and modify the formula at will
The results are easy to check and re-read without making mistakes. 7) Supports one-click horizontal screen, all algorithms are clear at a glance, the computing field of view is broader, and the computing experience is more enjoyable.
8) Built-in feedback function can provide feedback on what you find during use
problems and comments, the staff will fix them in a timely manner
【Scientific Calculator】
1) Supports scientific calculations of formula operations, logarithmic functions, power functions, trigonometric functions, and inverse trigonometric functions
2) Supports factorial, angle and radian operations, square operations, etc.
3)Support online remainder retrieval
4) Also supports history recording, uppercase conversion, voice counting, and re-editing functions ## Rankings - #2,053,695 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.ACCESS_WIFI_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.GET_TASKS` - `android.permission.INTERNET` - `android.permission.READ_CLIPBOARD_IN_BACKGROUND` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.READ_PHONE_STATE` - `android.permission.READ_PRIVILEGED_PHONE_STATE` - `android.permission.VIBRATE` - `android.permission.WRITE_EXTERNAL_STORAGE` - `com.android.vending.CHECK_LICENSE` ## Similar extensions and apps - [Calculator Pro](https://chrome-stats.com/d/com.calculator_pro) — 124 users - [Calc Pro - Smart Calculator](https://chrome-stats.com/d/com.mxgk.calc_pro) — 870 users - [Calculator Pro - Ad Free](https://chrome-stats.com/d/in.claymaster.calculator) — 156 users - [Calculator Pro](https://chrome-stats.com/d/dev.fiaz.calculator) — 61 users - [My Calculator: Calculator Pro](https://chrome-stats.com/d/com.fivestars.calculator.conversioncalculator) — 203,290 users, 4.22 / 5 - [Calculator Pro](https://chrome-stats.com/d/com.calctime.film) — 543 users - [ProCalc: Scientific Calculator](https://chrome-stats.com/d/com.calculator.procalc) — 4,818 users - [ProCalculator](https://chrome-stats.com/d/com.procalc.calculator) — 49 users - [CalcPro: Scientific&Basic Math](https://chrome-stats.com/d/com.calcpro.scientific.calculator.basic.math.smart.theme) — 21 users - [ProCalc Supreme](https://chrome-stats.com/d/com.sberke.procalcsupreme) — 21 users - [Calculator Pro](https://chrome-stats.com/d/com.orix.calculatorpro.app) — 15,693 users - [CalcPro– Scientific Calculator](https://chrome-stats.com/d/com.calcpro.scientific) — 257 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.doudoubird.calculation)