# Adding Machine 10Key iPhone vs Rapid & Quick Calculator

The clearest difference is price: Rapid & Quick Calculator at Free against Adding Machine 10Key iPhone's $2.99. Rapid & Quick Calculator also leads on rating (4.8 vs 4.6) and ratings volume (1.5K vs 131). Adding Machine 10Key iPhone's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 5 months). On review sentiment, in-app purchases and device support there is nothing between them.

Rapid & Quick Calculator is free to download; Adding Machine 10Key iPhone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rapid & Quick Calculator holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Rapid & Quick Calculator has 1.5K ratings behind it against 131, so its average is the more settled of the two. Written reviews complicate that: 95% of Adding Machine 10Key iPhone's written reviews are positive against 91% of Rapid & Quick Calculator's, so the app with the better star average is not the one people write more warmly about.

Adding Machine 10Key iPhone ships an update every 5 weeks, Rapid & Quick Calculator every 5 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | Adding Machine 10Key iPhone | Rapid & Quick Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.6 (131 ratings)](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834/reviews) | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/rapid-and-quick-calculator/id1046214532/reviews)** |
| Number of ratings | 131 | **1.5K** |
| Positive reviews | **95.2% of reviews** | 90.5% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Ad-supported |
| Best chart rank | **#132** | — |
| Size | 10 MB | 7 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Richard Silverman](https://appshunter.io/developer/297096643) | [KinkumaDesign](https://appshunter.io/developer/385697725) |

## What reviewers say

### Adding Machine 10Key iPhone

[App page](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834)

**Currently charting:** #132 Top Paid · Finance (US App Store)

This app emulates a traditional 10-key adding machine, offering reversed operator entry and percentage calculation. Users can edit and save paper tapes, export them to various services, and customize keypad sounds. It's designed for accurate and efficient numerical input.

**Highlights:** True 10-key adding machine emulation, Reversed operator entry, Percentage calculation, Editable paper tape history, Save and retrieve paper tape files, Export paper tape to iBooks, Dropbox, or printing utilities

**In-app purchases:** none

**What reviewers like**

- 👍 Works like a real adding machine
- 👍 Tape feature is excellent
- 👍 Easy to use and user-friendly
- 👍 Good for complex calculations
- 👍 Allows editing of numbers

**What reviewers complain about**

- 🐛 Watermarks premium exports
- 🐛 Haphazardly laid out controls
- 🐛 Touchy sound toggle in free version
- 🐛 Keypad glitch on re-opening
- 🐛 Nagging review requests

**Reported bugs**

- Watermarks premium PDF exports
- Haphazardly laid out controls
- Touchy sound toggle in free version
- Keypad glitch on re-opening
- Nagging review requests (Don't ask again button not working)

**Requested features**

- Eliminate tape for bigger total screen
- Add square root feature
- Bring back custom keypad feature on iPhone version
- Allow more than 350 lines
- Allow more notations on tape


### Rapid & Quick Calculator

[App page](https://appshunter.io/ios/app/rapid-and-quick-calculator/id1046214532)

A user-friendly calculator with essential functions and advanced features like tax and discount calculations. Easily reuse past calculations or edit expressions with intuitive controls. Offers customization options for themes and fonts.

**Highlights:** History Tape for reusing answers, Sales tax calculations, Discount calculations, Precise rounding settings, Customizable themes and fonts, Editable expressions with cursor keys, Share expressions and answers

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Adding Machine 10Key iPhone free?

Adding Machine 10Key iPhone costs $2.99, with no in-app purchases.

### Is Rapid & Quick Calculator free?

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

### Which has better reviews, Adding Machine 10Key iPhone or Rapid & Quick Calculator?

Rapid & Quick Calculator is rated higher. Adding Machine 10Key iPhone averages 4.6 out of 5 from 131 ratings, while Rapid & Quick Calculator averages 4.8 from 1.5K ratings.

### Do Adding Machine 10Key iPhone or Rapid & Quick Calculator have ads?

Rapid & Quick Calculator shows ads; Adding Machine 10Key iPhone does not.

### Which is updated more often, Adding Machine 10Key iPhone or Rapid & Quick Calculator?

Adding Machine 10Key iPhone ships an update every 5 weeks, and Rapid & Quick Calculator every 5 months. Most recently, Adding Machine 10Key iPhone was updated on October 14, 2026 and Rapid & Quick Calculator on October 14, 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.*