# Devalluator Calculation Tool vs Fast Percent

The clearest difference is price: Fast Percent at Free against Devalluator Calculation Tool's $0.99. Fast Percent also leads on ratings volume (414 vs 1). Devalluator Calculation Tool's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 1). On update cadence, device support and iOS requirement there is nothing between them.

Fast Percent is free to download; Devalluator Calculation Tool costs $0.99 up front. Fast Percent sells 1 one-off in-app purchase. Devalluator Calculation Tool asks for nothing beyond the download.

Devalluator Calculation Tool holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Fast Percent has 414 ratings behind it against 1, so its average is the more settled of the two.

Devalluator Calculation Tool ships an update every 10 months, Fast Percent every 6 months. The most recent releases landed on June 25, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Devalluator Calculation Tool | Fast Percent |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/devalluator-calculation-tool/id376644552/reviews)** | [4.5 (414 ratings)](https://appshunter.io/ios/app/fast-percent-calculator-tool/id812021371/reviews) |
| Number of ratings | 1 | **414** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 8 MB | 10 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Benson](https://appshunter.io/developer/376644555) | [John Benson](https://appshunter.io/developer/376644555) |

## 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


### Fast Percent

[App page](https://appshunter.io/ios/app/fast-percent-calculator-tool/id812021371)

Easily calculate various percentage-based values with a user-friendly interface. Quickly find discounts, original prices, and more with large buttons and intuitive hot keys.

**Highlights:** Calculate percentage off a value, Calculate percentage of a value, Calculate percentage on a value, Find original price before increase, Find original price before reduction

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad's | $0.99 | one-time |


## Frequently asked questions

### Is Devalluator Calculation Tool free?

Devalluator Calculation Tool costs $0.99, with no in-app purchases.

### Is Fast Percent free?

Fast Percent is free to download, with in-app purchases available.

### Which has better reviews, Devalluator Calculation Tool or Fast Percent?

Devalluator Calculation Tool is rated higher. Devalluator Calculation Tool averages 5.0 out of 5 from 1 ratings, while Fast Percent averages 4.5 from 414 ratings.

### Do Devalluator Calculation Tool or Fast Percent have ads?

Fast Percent shows ads; Devalluator Calculation Tool does not.

### Which is updated more often, Devalluator Calculation Tool or Fast Percent?

Devalluator Calculation Tool ships an update every 10 months, and Fast Percent every 6 months. Most recently, Devalluator Calculation Tool was updated on June 25, 2026 and Fast Percent on September 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.*