# Devalluator Calculation Tool vs Rapid & Quick Calculator Pro

The clearest difference is ads: Devalluator Calculation Tool at none against Rapid & Quick Calculator Pro's shown. Devalluator Calculation Tool also leads on price ($0.99 vs $3.99) and device support (4 vs 2). Rapid & Quick Calculator Pro's advantage is ratings volume (205 vs 1) and update cadence (every 5 months vs every 10 months). On rating, in-app purchases and monetization model there is nothing between them.

Devalluator Calculation Tool costs $0.99 and Rapid & Quick Calculator Pro $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 — 5.0 for Devalluator Calculation Tool against 4.9 for Rapid & Quick Calculator Pro. That said, the two scores are not equally well evidenced: Rapid & Quick Calculator Pro has 205 ratings behind it against 1, so its average is the more settled of the two.

Devalluator Calculation Tool ships an update every 10 months, Rapid & Quick Calculator Pro every 5 months. The most recent releases landed on June 25, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Devalluator Calculation Tool | Rapid & Quick Calculator Pro |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/devalluator-calculation-tool/id376644552/reviews)** | [4.9 (205 ratings)](https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562/reviews) |
| Number of ratings | 1 | **205** |
| Positive reviews | — | 90.1% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 8 MB | 7 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John Benson](https://appshunter.io/developer/376644555) | [KinkumaDesign](https://appshunter.io/developer/385697725) |

## What reviewers say

### Devalluator Calculation Tool

[App page](https://appshunter.io/ios/app/devalluator-calculation-tool/id376644552)

Easily calculate various percentage-based financial scenarios with large buttons and hotkeys. Quickly determine discounts, original prices, and more, ideal for shopping or financial planning.

**Highlights:** Percentage off a value, Percentage of a value, Percentage on a value, Calculate original price, Large input buttons, Hotkeys for quick selection

**In-app purchases:** none


### Rapid & Quick Calculator Pro

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

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 Devalluator Calculation Tool free?

Devalluator Calculation Tool costs $0.99, 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, Devalluator Calculation Tool or Rapid & Quick Calculator Pro?

Devalluator Calculation Tool is rated higher. Devalluator Calculation Tool averages 5.0 out of 5 from 1 ratings, while Rapid & Quick Calculator Pro averages 4.9 from 205 ratings.

### Do Devalluator Calculation Tool or Rapid & Quick Calculator Pro have ads?

Rapid & Quick Calculator Pro shows ads; Devalluator Calculation Tool does not.

### Which is updated more often, Devalluator Calculation Tool or Rapid & Quick Calculator Pro?

Devalluator Calculation Tool ships an update every 10 months, and Rapid & Quick Calculator Pro every 5 months. Most recently, Devalluator Calculation Tool was updated on June 25, 2026 and Rapid & Quick Calculator Pro on September 26, 2026.

---

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