Devalluator Calculation Tool vs Fast Percent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Devalluator Calculation Tool
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.
- Percentage off a value
- Percentage of a value
- Percentage on a value
- Calculate original price
- Large input buttons
- Hotkeys for quick selection
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Devalluator is a neat little app designed to make calculating percentages fast and simple. It uses large buttons to input values and hot keys to let you select the percentage you want to apply to a figure. Ideal for shopping environments when you just want to quickly find out the discount on that special pair of shoes and not wast time fiddling about with small buttons and complicated functions. The app can perform 5 percentage functions: -Percentage off a value -Percentage of a value -Percentage on a value -Original price before percentage was increased -Original price before percentage was reduced
Fast Percent
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.
- 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
Read full descriptionHide full description
Fast Percent is a neat little app designed to make calculating percentages fast and simple. It features large buttons to input values and hot keys to let you select the percentage you want to apply to a figure. Ideal for shopping environments when you just want to quickly find out the discount on that special pair of shoes and not wast time fiddling about with small buttons and complicated functions. Features: -Percentage off a value -Percentage of a value -Percentage on a value -Original price before percentage was increased -Original price before percentage was reduced
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Devalluator Calculation Tool | Fast Percent |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.5 (414 ratings) |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | 1 | 414 — better |
| Update frequency | Every 10 months | Every 6 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 8 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | John Benson | John Benson |
Customer experience
Devalluator Calculation Tool
Fast Percent
In-app purchases
Devalluator Calculation Tool
No in-app purchases
Fast Percent
- Remove Ad's$0.99
Questions
Is Devalluator Calculation Tool free?
Is Fast Percent free?
Which has better reviews, Devalluator Calculation Tool or Fast Percent?
Do Devalluator Calculation Tool or Fast Percent have ads?
Which is updated more often, Devalluator Calculation Tool or Fast Percent?
Other comparisons
