# CalcFast — Calculate and see the history

> Simple calculator app with calculation history for Apple devices. (iPhone/iPad app by Hannes Sverrisson.)

- Source: https://appshunter.io/ios/app/calcfast/id876781417 (this page in markdown: same URL + `.md`)
- Developer: [Hannes Sverrisson](https://appshunter.io/developer/428851947)
- Category: Utilities, Business
- Price: Free
- Rating: 4.20/5 from 20 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 3 MB
- Languages: American English
- Released: 2014-05-22
- Data updated: 2026-09-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/calcfast/id876781417/reviews.md

## What is CalcFast?

Fast and simple calculator for iPad, iPhone and Apple Watch that shows the calculation history, includes a Today Extension that allows for fast calculation by swiping down and 3D Touch for quick interactions. Numbers are formatted for your country, i.e. period in the US and comma in Europe.

Ever lost your train of thought half way through a calculation and thought how handy it would be to review your calculations. The aim of this Calculator is to be fast, elegant and simple.

Features: 
- The calculator can open side by side or over other apps in iPadOS.
- Select dark or light mode.
- External keyboard support.
- Smart Apple Watch Calculator included.
- Light weight Today Extension included.
- Calculations shown when input and on tape.
- Key click confirms pressing of buttons, which may be turned off.
- Previous calculation is repeated when the equal sign is pressed. 
- Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe. The number of decimal digits may be set in the Settings.
- VoiceOver is supported.
- Calculations Tape may be deleted by Tapping on it.

## Key features

- Calculation history display
- Today Extension for quick calculations
- Apple Watch app
- Dark/light mode selection
- External keyboard support
- VoiceOver support

## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/calcfast/id876781417/reviews.md

### 5/5 — Excellent calculator

*2025-11-15*

Super excellent calculator easy to use simple storage. It’s one of my favorites. Thank you for making this calculator JMB.

### 5/5 — Great app

*2024-01-05*

Great calculator! The iOS one was fine, but this one is much better!!👍

### 4/5 — Clean the widget design please

*2023-09-04*

Hi, this is a super and fast calc app, but I would like that you redesign the bottoms of the widget (+ - % X) without a white bar; this cause me a big confusion! Please I hope you can fix this issue.

### 3/5 — Backspace key is missing

*2023-06-28*

I would like this app, but the backspace key for correction is missing. Also, Delete All or Clear all should be included in the front-keyboard, it should be under user's fingers, easy to click on. 

In general, this app needs improvements and additional easy-to-features.

Initiative is good. I might reinstall it once it's improved. Thanks for this app.

### 5/5 — CalcFast Is Efficient, Good Looking

*2023-06-16*

CalcFast is simple to use and works great. The calculator looks good on both my iPad and iPhone. For me this calculator is much nicer than the stock calculator supplied with the iPhone. My thanks to the developer for an excellent app that is easy to use. Job well done!

### 5/5 — Calc Fast simplicity hits all 5 stars

*2021-12-02*

Exactly what I was looking for in my calc app.  Records are kept or deleted in a simple yet secure fashion.  Historical calculations are simply to find.  Very basic but it seems to calculate my larger commission amounts just fine.

### 5/5 — Great app

*2021-07-31*

Great app, easy to use and navigate

### 2/5 — History Not Kept

*2020-12-14*

This was my “go to” calculator. But after a recent update, the history disappears. Is that now a purchase feature?

Sent email to developer. He/She followed up but after my reply, nothing!

### 5/5 — Nice app

*2020-05-17*

Very easy to use and exactly what I need for daily calculations.

### 5/5 — Easy to use

*2019-09-30*

I find this app easy to use and gets the job done

## Frequently asked questions about CalcFast

### What devices does CalcFast support?

CalcFast is available on iPhone, iPad, and Apple Watch. It was released on May 22, 2014, and its latest version is 6.12, last updated on March 26, 2026.

### Is CalcFast free to use?

Yes, CalcFast is completely free to download and use. It does not have any in-app purchases or advertisements.

### Does CalcFast have ads?

No, CalcFast is ad-free, providing an uninterrupted calculation experience.

### How does CalcFast handle number formatting?

Numbers are automatically formatted for your country, using periods in the US and commas in Europe. You can also set the number of decimal digits in the Settings.

### Can I access CalcFast quickly on my iPhone?

Yes, CalcFast includes a lightweight Today Extension that allows for fast calculations by swiping down on your iPhone's screen.

### Does CalcFast support accessibility features?

Yes, CalcFast fully supports VoiceOver, making it accessible for visually impaired users.

### What is the age rating for CalcFast?

CalcFast has an age rating of 4+, making it suitable for a wide range of users.

### How often is CalcFast updated?

The latest version, 6.12, was last updated on March 26, 2026. While specific update frequency isn't detailed, this indicates ongoing development.

## Version history (last 5 releases)

### 7.2 — 2026-08-22

- Bug fixes and speed improvements.

### 7.1 — 2026-05-19

- Input was not showing the decimal separator before entering another number

### 7.0 — 2026-04-23

- All new calculation engine

### 6.12 — 2026-03-26

- Minor fixes and improvements.

### 6.11 — 2024-12-07

- Double pressing comma or percent buttons by mistake is ignored.

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## More apps by Hannes Sverrisson

- [CalculateRetro](https://appshunter.io/ios/app/calculateretro/id428851944)
- [Calculate Lite](https://appshunter.io/ios/app/calculate-lite/id429275228)
- [Calculator Silver](https://appshunter.io/ios/app/calculator-silver/id432572975)
- [Calculator Silver Lite](https://appshunter.io/ios/app/calculator-silver-lite/id432968949)
- [Scientific Calc](https://appshunter.io/ios/app/scientific-calc/id456710555)
- [ScientificLite](https://appshunter.io/ios/app/scientificlite/id458730784)

All apps by Hannes Sverrisson: https://appshunter.io/developer/428851947

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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 2026-09-04.*