# Adding Machine 10Key iPhone vs Rapid & Quick Calculator Pro

The clearest difference is ads: Adding Machine 10Key iPhone at none against Rapid & Quick Calculator Pro's shown. Adding Machine 10Key iPhone also leads on update cadence (every 5 weeks vs every 5 months) and price ($2.99 vs $3.99). Rapid & Quick Calculator Pro's advantage is rating (4.9 vs 4.6). On review sentiment, ratings volume, in-app purchases and chart position there is nothing between them.

Adding Machine 10Key iPhone costs $2.99 and Rapid & Quick Calculator Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rapid & Quick Calculator Pro holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 131 and 206 respectively. Written reviews complicate that: 95% of Adding Machine 10Key iPhone's written reviews are positive against 90% of Rapid & Quick Calculator Pro'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 Pro every 5 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Adding Machine 10Key iPhone | Rapid & Quick Calculator Pro |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | [4.6 (131 ratings)](https://appshunter.io/ios/app/adding-machine-10key-iphone/id392883834/reviews) | **[4.9 (206 ratings)](https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562/reviews)** |
| Number of ratings | 131 | **206** |
| Positive reviews | **95.2% of reviews** | 90.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#94** | #198 |
| 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:** #94 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 Pro

[App page](https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562)

**Currently charting:** #198 Top Paid · Finance (US App Store)

This calculator app offers essential functions plus advanced features like sales tax and discount calculations. Easily reuse past answers, edit expressions with cursor keys, and customize themes and fonts. Share your calculations with others.

**Highlights:** History tape for reusing answers, Sales tax and discount calculations, Precise rounding settings, Editable expressions with cursor keys, Multiple color themes and font options, Share expressions and answers

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 📜 History feature is helpful
- 📋 Copy and paste functionality
- ✨ Customizable appearance
- ✅ Clear display of calculations

**What reviewers complain about**

- 🐛 App crashes on paste
- 🐛 Random calculations appear
- 🐛 Laggy input on startup
- 🐛 iPad bug with screen switching
- 🐛 Swipe responsiveness issues

**Reported bugs**

- App crashes when pasting copied expression and pressing equals
- Random calculations appear in current box after clearing and reopening
- Laggy drawing of input on startup
- App becomes unusable on iPad after screen switching
- Swipe response is poor

**Requested features**

- Dark mode for icon
- Larger calculation display window
- Separate tax buttons (pre/post tax)
- Vibration option for input
- Add memo to history


## 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 Pro free?

Rapid & Quick Calculator Pro costs $3.99, with no in-app purchases.

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

Rapid & Quick Calculator Pro is rated higher. Adding Machine 10Key iPhone averages 4.6 out of 5 from 131 ratings, while Rapid & Quick Calculator Pro averages 4.9 from 206 ratings.

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

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

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

Adding Machine 10Key iPhone ships an update every 5 weeks, and Rapid & Quick Calculator Pro every 5 months. Most recently, Adding Machine 10Key iPhone was updated on October 26, 2026 and Rapid & Quick Calculator Pro on October 26, 2026.

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

Adding Machine 10Key iPhone currently peaks at #94 in the App Store charts, and Rapid & Quick Calculator Pro at #198. Chart position reflects recent download velocity rather than total install base.

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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.*