# Calculator vs P.M.M.D Calculator

The clearest difference is price: Calculator at Free against P.M.M.D Calculator's $3.99. Calculator also leads on rating (4.7 vs 1.0) and ratings volume (916 vs 1). P.M.M.D Calculator's advantage is ads (none vs shown) and iOS requirement (13 vs 15.0). On update cadence, in-app purchases and device support there is nothing between them.

Calculator is free to download; P.M.M.D Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Calculator has 916 ratings behind it against 1, so its average is the more settled of the two.

Calculator ships an update every 13 months, P.M.M.D Calculator every 22 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Calculator | P.M.M.D Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.7 (916 ratings)](https://appshunter.io/ios/app/calculator/id549782479/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pmmd-calculator/id1631470538/reviews) |
| Number of ratings | **916** | 1 |
| Positive reviews | 79.8% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 13 months** | Every 22 months |
| Monetization | Ad-supported | — |
| Size | 11 MB | 1 MB |
| Requires iOS | 15.0 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator/id549782479)

This is a straightforward calculator application designed for ease of use and clear readability. Users can personalize the app's appearance by choosing their preferred background and display themes.

**Highlights:** Easy to use interface, Clear display, Customizable background, Customizable display themes

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💻 Easy to use
- 🎨 Colorful and visually appealing
- 👀 Large, easy-to-read numbers
- 🎯 Accurate calculations
- 🆓 Free app

**What reviewers complain about**

- 🔊 Loud button clicking sound that can't be turned off
- 📏 Lacks landscape mode
- 🔢 No percentage or advanced math functions

**Reported bugs**

- Sound toggle switch doesn't work to turn off sounds
- App crashes or freezes on some devices

**Requested features**

- Add percentage and other advanced math functions
- Allow landscape mode
- Add option to turn off button sounds


### P.M.M.D Calculator

[App page](https://appshunter.io/ios/app/pmmd-calculator/id1631470538)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is P.M.M.D Calculator free?

P.M.M.D Calculator costs $3.99, with no in-app purchases.

### Which has better reviews, Calculator or P.M.M.D Calculator?

Calculator is rated higher. Calculator averages 4.7 out of 5 from 916 ratings, while P.M.M.D Calculator averages 1.0 from 1 ratings.

### Do Calculator or P.M.M.D Calculator have ads?

Calculator shows ads; P.M.M.D Calculator does not.

### Which is updated more often, Calculator or P.M.M.D Calculator?

Calculator ships an update every 13 months, and P.M.M.D Calculator every 22 months. Most recently, Calculator was updated on October 23, 2026 and P.M.M.D Calculator on October 30, 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.*