# Adding Machine 10Key Universal vs Rapid & Quick Calculator

The clearest difference is price: Rapid & Quick Calculator at Free against Adding Machine 10Key Universal's $3.99. Rapid & Quick Calculator also leads on ratings volume (1.5K vs 134). Adding Machine 10Key Universal's advantage is ads (none vs shown) and update cadence (every 2 months vs every 5 months). On rating, review sentiment, in-app purchases and device support there is nothing between them.

Rapid & Quick Calculator is free to download; Adding Machine 10Key Universal costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Adding Machine 10Key Universal against 4.8 for Rapid & Quick Calculator. That said, the two scores are not equally well evidenced: Rapid & Quick Calculator has 1.5K ratings behind it against 134, so its average is the more settled of the two. Written reviews are what separate them: 94% of Adding Machine 10Key Universal's written reviews are positive against 91% of Rapid & Quick Calculator's.

Adding Machine 10Key Universal ships an update every 2 months, Rapid & Quick Calculator every 5 months. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Adding Machine 10Key Universal | Rapid & Quick Calculator |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.7 (134 ratings)](https://appshunter.io/ios/app/adding-machine-10key-universal/id579385939/reviews) | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/rapid-and-quick-calculator/id1046214532/reviews)** |
| Number of ratings | 134 | **1.5K** |
| Positive reviews | **94.0% of reviews** | 90.5% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#188** | — |
| Size | 23 MB | 7 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPad, 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 Universal

[App page](https://appshunter.io/ios/app/adding-machine-10key-universal/id579385939)

**Currently charting:** #188 Top Paid · Finance (US App Store)

This app emulates a traditional 10-key adding machine for precise calculations. It offers features like reversed operator entry, percentage calculation, and the ability to review and edit entries on a digital paper tape. Users can save, export, and print their calculation tapes.

**Highlights:** 10-key adding machine emulation, Reversed operator entry, Percentage calculation, Digital paper tape with editing, Save and export tapes (PDF), TypeTone audio feedback (iPad)

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🧮 Acts like an adding machine
- 🧾 Digital tape for review
- 🖨️ Can print tape
- 💾 Can save/export results

**What reviewers complain about**

- 🐛 Outdated and no support
- 🐛 Doesn't work for new iPad
- 🐛 Total only shows non-zero decimals
- 🐛 Ridiculous method to clear tape
- 🐛 % key not functional

**Reported bugs**

- Cannot save taped
- Cannot export results
- Does not work for new iPad
- Total only shows digits after the decimal that aren't zero
- Method to clear the tape is ridiculous

**Requested features**

- Add widget
- Add realistic sounds
- Add iCloud sync
- Improve tape clearing method
- Clarify functionality of % and +/- keys


### 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 Universal free?

Adding Machine 10Key Universal costs $3.99, 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 Universal or Rapid & Quick Calculator?

Rapid & Quick Calculator is rated higher. Adding Machine 10Key Universal averages 4.7 out of 5 from 134 ratings, while Rapid & Quick Calculator averages 4.8 from 1.5K ratings.

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

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

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

Adding Machine 10Key Universal ships an update every 2 months, and Rapid & Quick Calculator every 5 months. Most recently, Adding Machine 10Key Universal was updated on September 26, 2026 and Rapid & Quick Calculator on September 25, 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.*