# The Calculator Pro· vs Calculator ⁺⁻

The clearest difference is in-app purchases: Calculator ⁺⁻ at none against The Calculator Pro·'s 1. The Calculator Pro·'s advantage is ads (none vs shown) and review sentiment (81% vs 50%). On price, rating and device support there is nothing between them.

Both are free to download. The Calculator Pro· sells 1 one-off in-app purchase. Calculator ⁺⁻ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for The Calculator Pro· against 4.7 for Calculator ⁺⁻. Both are backed by a comparable volume of ratings — 153 and 42 respectively. Written reviews are what separate them: 81% of The Calculator Pro·'s written reviews are positive against 50% of Calculator ⁺⁻'s.

The Calculator Pro· ships an update every 3 months, Calculator ⁺⁻ every 15 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | The Calculator Pro· | Calculator ⁺⁻ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (153 ratings)](https://appshunter.io/ios/app/the-calculator-pro/id1443579398/reviews) | **[4.7 (42 ratings)](https://appshunter.io/ios/app/calculator/id6443813573/reviews)** |
| Number of ratings | **153** | 42 |
| Positive reviews | **80.8% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 46 MB | 4 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KISSAPP, S.L.](https://appshunter.io/developer/552812711) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## What reviewers say

### The Calculator Pro·

[App page](https://appshunter.io/ios/app/the-calculator-pro/id1443579398)

This app offers a versatile calculator with basic and scientific functions, along with unit and currency conversion. It features an intuitive design with customizable themes and the ability to edit equations. Enjoy historical records and multitasking support on compatible devices.

**Highlights:** Calculator 7 in 1, Scientific and basic modes, Unit and currency converters, Equation editing, Historical records, Customizable themes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No ads | $3.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Efficient calculations
- 👍 Easy to use
- 👍 Convenient functionality
- 👍 Good for daily use

**What reviewers complain about**

- 😠 Too many ads
- 😠 Constant video ads
- 😠 Frequent interruptions
- 😠 Ads make it unusable
- 😠 Percentage calculation incorrect

**Reported bugs**

- Percentage calculation is wrong
- App does not show on watch

**Requested features**

- Add square multiplication key
- Larger font size
- Improve percentage calculation
- Dark mode option
- Fix watch app compatibility


### Calculator ⁺⁻

[App page](https://appshunter.io/ios/app/calculator/id6443813573)

This app offers both basic and scientific calculation functions for iPhone and iPad. Users can customize its appearance, view calculation history, and perform complex equations with high accuracy. It also provides real-time calculation display and adjustable touch feedback.

**Highlights:** Basic and scientific calculator modes, Over 30 scientific operations, Calculation history view, Real-time calculation display, Customizable color themes, Adjustable button touch sound/vibration, High accuracy calculations (75+ significant digits)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Calculator Pro· free?

The Calculator Pro· is free to download, with in-app purchases available.

### Is Calculator ⁺⁻ free?

Calculator ⁺⁻ is free to download, with no in-app purchases.

### Which has better reviews, The Calculator Pro· or Calculator ⁺⁻?

Calculator ⁺⁻ is rated higher. The Calculator Pro· averages 4.5 out of 5 from 153 ratings, while Calculator ⁺⁻ averages 4.7 from 42 ratings.

### Do The Calculator Pro· or Calculator ⁺⁻ have ads?

Calculator ⁺⁻ shows ads; The Calculator Pro· does not.

### Which is updated more often, The Calculator Pro· or Calculator ⁺⁻?

The Calculator Pro· ships an update every 3 months, and Calculator ⁺⁻ every 15 months. Most recently, The Calculator Pro· was updated on October 24, 2026 and Calculator ⁺⁻ on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*