# Calculator + vs Modulus Calculator

The clearest difference is in-app purchases: Modulus Calculator at none against Calculator +'s 12. Modulus Calculator also leads on ads (none vs shown) and review sentiment (100% vs 85%). Calculator +'s advantage is ratings volume (10K vs 8). On price and device support there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Modulus Calculator asks for nothing beyond the download.

Modulus Calculator holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 100% of Modulus Calculator's.

## The numbers

| Metric | Calculator + | Modulus Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews) | **[4.8 (8 ratings)](https://appshunter.io/ios/app/modulus-calculator/id1432356578/reviews)** |
| Number of ratings | **10K** | 8 |
| Positive reviews | 84.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 1 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Theodore Dubois](https://appshunter.io/developer/1432356577) |

## 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

**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


### Modulus Calculator

[App page](https://appshunter.io/ios/app/modulus-calculator/id1432356578)

This utility app functions as a standard calculator but performs all operations within a specified modulus. It supports powers and inverses, with division implemented through multiplication by the inverse. Easily switch the modulus using the dedicated indicator.

**Highlights:** Modulus-based calculations, Support for powers and inverses, Division via modular inverse, Easy modulus switching, Calculator interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator + free?

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

### Is Modulus Calculator free?

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

### Which has better reviews, Calculator + or Modulus Calculator?

Modulus Calculator is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while Modulus Calculator averages 4.8 from 8 ratings.

### Do Calculator + or Modulus Calculator have ads?

Calculator + shows ads; Modulus Calculator does not.

---

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