# Percentage vs EngineCalc

The clearest difference is device support: Percentage at 3 against EngineCalc's 1. Percentage also leads on iOS requirement (15.6 vs 26.0). On price, rating, ratings volume and update cadence there is nothing between them.

Percentage costs $0.99 and EngineCalc $0.99 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 — 3.0 for Percentage against 3.0 for EngineCalc. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

Percentage ships an update every 14 months, EngineCalc every 22 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Percentage | EngineCalc |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/percentage/id336918440/reviews) | [3.0 (4 ratings)](https://appshunter.io/ios/app/enginecalc/id378824382/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 14 months** | Every 22 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 13 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [iTrinity, Inc.](https://appshunter.io/developer/547108075) |

## What reviewers say

### Percentage

[App page](https://appshunter.io/ios/app/percentage/id336918440)

This utility calculates proportions between two values expressed as percentages. It allows you to find any unknown value in a percentage equation, including percent increases or decreases.

**Highlights:** Calculate any percentage value, Find percent increase, Find percent decrease, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### EngineCalc

[App page](https://appshunter.io/ios/app/enginecalc/id378824382)

This utility app provides a collection of essential formulas and calculators for powersports and engine tuning. It allows users to perform complex calculations directly on their iPhone, eliminating the need for a laptop or desktop computer.

**Highlights:** Powersports formulas, Engine tuning calculators, Actual Volume Flow, Air Density, Compression Ratio, Cylinder Displacement, Volumetric Efficiency

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

**In-app purchases:** none


## Frequently asked questions

### Is Percentage free?

Percentage costs $0.99, with no in-app purchases.

### Is EngineCalc free?

EngineCalc costs $0.99, with no in-app purchases.

### Which has better reviews, Percentage or EngineCalc?

Percentage and EngineCalc are both rated 3.0 out of 5 on the App Store, from 2 and 4 ratings respectively.

### Do Percentage or EngineCalc have ads?

Neither Percentage nor EngineCalc shows ads.

### Which is updated more often, Percentage or EngineCalc?

Percentage ships an update every 14 months, and EngineCalc every 22 months. Most recently, Percentage was updated on October 7, 2026 and EngineCalc on October 11, 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.*