# Calculator + vs Quadratic Formula Calculator

The clearest difference is update cadence: Calculator + at every 5 days against Quadratic Formula Calculator's every 9 months. Calculator + also leads on ratings volume (10K vs 71) and review sentiment (85% vs 75%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month and Quadratic Formula Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Calculator + against 4.7 for Quadratic Formula Calculator. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 71, so its average is the more settled of the two. Written reviews are what separate them: 85% of Calculator +'s written reviews are positive against 75% of Quadratic Formula Calculator's.

Calculator + ships an update every 5 days, Quadratic Formula Calculator every 9 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator + | Quadratic Formula Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews) | **[4.7 (71 ratings)](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468/reviews)** |
| Number of ratings | **10K** | 71 |
| Positive reviews | **84.9% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 9 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 3 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Edward Prokopik](https://appshunter.io/developer/1077587110) |

## What reviewers say

### Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus/id351815470)

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

**Highlights:** Free basic and scientific calculator, Intuitive interface with equation and result display, Fraction and percent support, Advanced editing capabilities, Polynomial and linear equation solver, Graphing calculator, Unit conversion and geometric calculators

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Calculator | $4.99 | per month |
| Calculator | $39.99 | per year |
| Linear Calculator | $2.99 | one-time |
| Factoring Calculator | $2.99 | one-time |
| Handwriting Calculator | $2.99 | one-time |
| Currency Converter | $2.99 | one-time |
| Themes Pack | $2.99 | one-time |
| Graphing Calculator | $3.99 | one-time |
| Fraction Calculator | $3.99 | one-time |
| Scientific Calculator | $4.99 | one-time |
| Calculator Plus | $4.99 | one-time |
| Calculator | $16.99 | one-time |

**What reviewers like**

- 👍 Great features and easy to use
- 👍 Efficient and quick
- 👍 Versatile, functional calculator
- 👍 Fantastic, easy to use app
- 👍 Awesome calculator app

**What reviewers complain about**

- 🐛 New updated layout is awful
- 🐛 App is now terrible
- 🔒 Paying customer screwed over by update
- 🔒 Now timed trial, no free w/ads version
- 🔒 Not honest

**Reported bugs**

- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes

**Requested features**

- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines


### Quadratic Formula Calculator

[App page](https://appshunter.io/ios/app/quadratic-formula-calculator/id1425311468)

This app simplifies solving quadratic equations by allowing users to input coefficients a, b, and c. It quickly displays the solutions for x, including support for imaginary numbers. Users can also switch between light and dark themes for a personalized experience.

**Highlights:** Input coefficients a, b, and c, Displays solutions for x, Supports imaginary number solutions, Light and Dark modes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Mode | $1.99 | one-time |


## Frequently asked questions

### Is Calculator + free?

Calculator + is free to download, with in-app purchases available.

### Is Quadratic Formula Calculator free?

Quadratic Formula Calculator is free to download, with in-app purchases available.

### Which has better reviews, Calculator + or Quadratic Formula Calculator?

Quadratic Formula Calculator is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while Quadratic Formula Calculator averages 4.7 from 71 ratings.

### Do Calculator + or Quadratic Formula Calculator have ads?

Both Calculator + and Quadratic Formula Calculator show ads.

### Which is updated more often, Calculator + or Quadratic Formula Calculator?

Calculator + ships an update every 5 days, and Quadratic Formula Calculator every 9 months. Most recently, Calculator + was updated on October 28, 2026 and Quadratic Formula Calculator on October 24, 2026.

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