# Calculator Fast Business — Scientific and Easy Calculator

> Free, customizable basic and scientific calculator with advanced math functions. (iPhone/iPad app by Mary srl.)

- Source: https://appshunter.io/ios/app/calculator-fast-business/id1232695375 (this page in markdown: same URL + `.md`)
- Developer: [Mary srl](https://appshunter.io/developer/727067925)
- Category: Utilities, Finance
- Price: Free
- Rating: 4.30/5 from 3 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 26 MB
- Languages: American English, Japanese
- Released: 2017-05-07
- Data updated: 2026-08-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/calculator-fast-business/id1232695375/reviews.md

## What is Calculator Fast Business?

Calculator All in One, fast and easy to use.

Free calculator! Merge the functions of a basic calculator and a scientific calculator. Color your days by customizing the calculator with the colors that you like the most. You can customize the colors without paying any extra charge.
Active scientific calculator to perform more complex calculations, or use the memory buttons like those of the original calculator.
You can do many mathematical operations with the calculator. It comprises: addition, subtraction, division, multiplication, percentage, to the cube elevation, elevation nth power, power of 2, cube root, power to the base 10 and multiple of 3 exponent, n-th root, power of E , the power of 10, square, square root, natural logarithm, common logarithm, binary logarithm, sine, cosine, tangent, arc sine, cosine, hyperbolic sine, hyperbolic cosine, hyperbolic tangent, arc tangent, inverse hyperbolic sine, hyperbolic arc tangent, mutual, random number and factorial.
For example, Calculator is perfect in situations such as calculating taxes, homework study for school or university, calculations at work, add up the receipts, calculate the tip in restaurants and calculate the discount while you shop.
Features:
- Simple and elegant design
- Easy to use with large buttons
- Customize your calculator with the colors that you like the most
- Option to activate / deactivate the vibrator
- Option to enable / disable memory buttons
- View your calculations with commas
- Basic calculation buttons
- Buttons of advanced mathematical and scientific functions

## Key features

- Basic and scientific calculator functions
- Extensive mathematical operations
- Color customization
- Memory buttons
- Simple and elegant design
- Large buttons

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/calculator-fast-business/id1232695375/reviews.md

### 1/5 — なし

*2025-06-27*

広告がうるさい

### 2/5 — 惜しい

*2020-08-04*

シンプルでよいが、タップ音が無いね

### 1/5 — なぜ音の出る広告を付けた

*2020-03-14*

アプリの立ち上がり時広告が出るのはフリーアプリとしては仕方ないと思いますが、音声が流れるCMはありえない。使うときに毎回消音設定にしてから立ち上げるなんて手間でしかなく最低だと思います。

### 5/5 — Woooooow

*2020-02-10*

Je le trouve fantastique et GÉNIAL il enregistre tes calculs et ses bien car imagine si tu oublie de quelque chose alors cette application va vraiment aider !!!!!! 📲1️⃣2️⃣3️⃣4️⃣5️⃣6️⃣7️⃣8️⃣9️⃣🔟 et je viens du Canada alors je parle français 🥰😘😍👍🏻👏🏻👌

### 1/5 — 広告の事　急いで、計算するのに、まず広告が出てくるので、煩わしいなんとかできなきのか？

*2019-10-22*

すぐ計算したいのに、広告が入ってくる
これは、邪魔、すぐ計算できない
この広告外すのはどうすればいいか？

### 2/5 — 5 second ad = slow

*2019-07-14, version 1.4*

What’s the point of calling it fast with a mandatory 5 second ad every time I open it without an option to buy ad removal?

### 5/5 — すごい!!!

*2019-05-17*

本当のように

### 3/5 — 広告がウザイ

*2019-05-11*

計算機を使おうと思って起動すると、googleの動画広告が表示され、なかなか使えない。

## Frequently asked questions about Calculator Fast Business

### What is Calculator Fast Business?

Calculator Fast Business is a free utility app that combines basic and scientific calculator functions. It offers a wide range of mathematical operations and allows users to customize its appearance with different colors.

### Is Calculator Fast Business free to use?

Yes, Calculator Fast Business is completely free to use. The description states it is a 'Free calculator!' and customization options are available 'without paying any extra charge'.

### What kind of calculations can Calculator Fast Business perform?

It can perform basic arithmetic (addition, subtraction, multiplication, division, percentage) as well as advanced scientific functions like logarithms, trigonometric functions, roots, and powers.

### Can I customize the look of Calculator Fast Business?

Yes, you can customize the calculator's colors to your preference without any additional cost. This feature allows you to personalize the app's appearance.

### Does Calculator Fast Business have ads?

No, the application data indicates that Calculator Fast Business does not have ads. It is a free application without advertisements.

### What devices is Calculator Fast Business compatible with?

Calculator Fast Business is supported on iPhone, iPad, and iPod devices. It is designed for iOS platforms.

### How often is Calculator Fast Business updated?

The latest version of Calculator Fast Business is 1.5, which was last updated on June 12, 2020. This indicates it has not received updates in over three years.

### What is the age rating for Calculator Fast Business?

Calculator Fast Business has an age rating of 4+. This suggests it is suitable for children and general audiences.

## Version history (last 5 releases)

### 1.5 — 2020-06-12

- Bug fixes and performance improvements
- Calculator updated SDK

### 1.4 — 2019-07-05

- Bug fixes and performance improvements

### 1.3 — 2019-03-07

- bug fixes
- new themes

### 1.2 — 2017-10-13

- More attractive UI
- Calculation history

### 1.0 — 2017-05-06

No release notes.

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All apps by Mary srl: https://appshunter.io/developer/727067925

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*