# Calcbot 2 — Calculator and Unit Converter

> Intelligent calculator and unit converter with history, expression view, and conversions. (iPhone/iPad app by Tapbots.)

- Source: https://appshunter.io/ios/app/calcbot-2/id376694347 (this page in markdown: same URL + `.md`)
- Developer: [Tapbots](https://appshunter.io/developer/293642940)
- Category: Utilities, Business
- Price: Free with in-app purchases
- Rating: 4.70/5 from 11,114 App Store ratings · 652 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 15 MB
- Languages: American English, Arabic, German (Germany), Japanese, Russian, Chinese (Simplified, China)
- Released: 2010-07-13
- Data updated: 2026-08-20
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calcbot-2/id376694347/reviews.md

## What is Calcbot 2?

Calcbot is an intelligent calculator and unit converter for the rest of us. Featuring an easy-to-read history tape, expression view, intuitive conversion, and much more!

History Tape*.
Every calculation you enter gets saved to the history tape. Refer to calculations later or send them right back to your current calculation.

Expression View.
Calcbot's original expression view allows you to see everything you have typed so you'll never forget what you entered or miss a typo.

Apple Watch Extension.
Perform basic calculations, conversions, calculate tips, and split bills right from your Apple Watch.

Conversion*.
Convert any of your calculations with over 500 units across 22 different categories including auto-updating currency rates.

Favorites.
Fave a calculation and get instant access to its result via the Favorites Key. No more cryptic memory keys.

Scientific Functions. 
Rotate your device into landscape mode to gain access to common scientific functions.

Constants.
Get instant access to scientific constants like Pi, Atomic Mass, or add your own*.

Round for Currency.
Have all of your results rounded to two decimal places.

Sounds & Animations.
Beautiful custom animations and sound effects provide positive feedback and an enjoyable experience while performing calculations.

* In-App purchase required.

## Key features

- History tape for saved calculations
- Expression view for typed input
- Over 500 unit conversions
- Apple Watch extension
- Scientific functions in landscape
- Favorites for instant access

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Calcbot Pro | $1.99 | one-time |


## What do users think of Calcbot 2?

Overall sentiment: neutral

**Pros**

- 💻 Flexible calculator & conversions
- 📝 Comprehensive history tape
- 🎨 Customizable themes and icons
- ⌚️ Apple Watch app
- 🔢 Supports advanced calculations
- 🧮 Excellent unit conversion tool

**Cons**

- ⚠️ Lack of updates and support
- 🚫 Removing free features behind paywall
- 🐞 Bugs and glitches (history tape issues, crashing)
- 🕰️ Slow loading times
- 🤔 Unintuitive interface for conversions

**Commonly reported bugs**

- History tape not recording all calculations
- Conversion settings not syncing to Apple Watch
- App crashing on launch for some users
- Blank app icons after iOS updates

**Most requested features**

- Dark mode option
- Widgets for quick access
- More currency and unit conversions
- Improved Apple Watch integration
- Ability to edit calculations in history tape

## Recent user reviews (10 of 652)

All indexed reviews: https://appshunter.io/ios/app/calcbot-2/id376694347/reviews.md

### 5/5 — The best !

*2026-07-02*

La meilleure des calculettes, et ce, depuis des années

### 4/5 — Love this calculator…but

*2026-05-26, version 2.5.2*

I’ve been using this calculator as my go to for the past 5 years. I loved the fact that there’s a conversion side to this calculator. The only downside is that there isn’t many unit for currency conversion. Hoping they’ll add more in future updates

### 5/5 — GOAT

*2026-03-27*

The best I’ve used for years. It could have minor updates for the latest iOS version

### 5/5 — Better than Apple Store

*2026-03-23, version 2.5.2*

The first time the two sides

### 5/5 — Continues to be the best calculator I’ve ever used!

*2026-01-09, version 2.5.2*

Unfortunately after eating for 4 years for an update, and even sending an e-mail, I was forced to move on. On iOS, iPadOS and on the MacOS. RIP Calcbot!

### 2/5 — Almost perfect

*2025-12-24, version 2.5.2*

The looks the haptics the functionality it’s almost perfect but there needs to a clear all button or a faster way to clear because pressing an holding the sideways X is too slow and sometime doesn’t work.

### 3/5 — Update Needed

*2025-12-23, version 2.5.2*

Multiple times when using, the results don’t be added to the list above only a blank slot appears. When I do multiple calculations for finance I need each and every single calculation listed. It’s been 4 years since the last update and this app is in desperate need of one. This is an app that needs to be bought it’s not free so the developer / developers need to do their job and update this app.

### 5/5 — THE BEST OF ALL TIMES

*2025-12-08*

You wont find a better calculator

### 1/5 — Abandoned?

*2025-11-16, version 2.5.2*

Has my favorite calculator and currency converter app been abandoned? It hasn’t supported any new iOS features for years and it’s officially out of date with the latest iPhones with parts of the interface clashing with the Dynamic Island. Is is time to abandon it for an app like Calzy? It’d be a shame.

### 5/5 — Best calculator app

*2025-11-05, version 2.5.2*

For many years it’s a best calculator app on iOS.

## Frequently asked questions about Calcbot 2

### What does Calcbot 2 do?

Calcbot 2 is an intelligent calculator and unit converter designed for ease of use. It features a history tape to save and recall calculations, an expression view to see your input, and extensive unit conversion capabilities.

### What are the key features of Calcbot 2?

Key features include a history tape, expression view, over 500 unit conversions across 22 categories with auto-updating currency rates, an Apple Watch extension, scientific functions accessible in landscape mode, and a favorites feature for quick access to results.

### Is Calcbot 2 free to use?

The app is free to download and use, but certain advanced features such as the history tape and conversion capabilities require an in-app purchase to unlock.

### What devices is Calcbot 2 compatible with?

The application is designed for mobile devices and also includes an extension for Apple Watch, allowing for calculations and conversions directly from your wrist.

### What are some common use cases for Calcbot 2?

Common use cases include performing everyday calculations, converting units for travel or cooking, accessing scientific functions for academic or professional needs, and quickly splitting bills or calculating tips using the Apple Watch extension.

## Version history (last 5 releases)

### 2.5.2 — 2021-11-15

- Sped up launch
- Cleaned up complication icons
- Various minor bug fixes

### 2.5.1 — 2021-10-28

- Support for iOS 15
- Support for latest iPhones, iPads and Watches
- Support for dark mode
- Various bug fixes

### 2.5 — 2021-10-27

- Support for iOS 15
- Support for latest iPhones, iPads and Watches
- Support for dark mode

### 2.4.4 — 2019-09-23

- Fixed a crasher under iOS 13

### 2.4.3 — 2019-08-23

- Fixed a couple of bugs

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All apps by Tapbots: https://appshunter.io/developer/293642940

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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.*