# EngineCalc vs FuelAdvisor for iPhone

The clearest difference is price: FuelAdvisor for iPhone at Free against EngineCalc's $0.99. FuelAdvisor for iPhone also leads on rating (5.0 vs 2.3) and update cadence (every 5 days vs every 2 months). EngineCalc's advantage is review sentiment (60% vs 40%) and chart position (#184 vs unranked). On ratings volume, ads, in-app purchases and device support there is nothing between them.

FuelAdvisor for iPhone is free to download; EngineCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FuelAdvisor for iPhone holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 60% of EngineCalc's written reviews are positive against 40% of FuelAdvisor for iPhone's, so the app with the better star average is not the one people write more warmly about.

EngineCalc ships an update every 2 months, FuelAdvisor for iPhone every 5 days. The most recent releases landed on August 14, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | EngineCalc | FuelAdvisor for iPhone |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/enginecalc/id378824382/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fueladvisor-for-iphone/id387567378/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | **60.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Best chart rank | **#184** | — |
| Size | 8 MB | 10 MB |
| Requires iOS | **6.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iTrinity, Inc.](https://appshunter.io/developer/547108075) | [Charles Tatum II](https://appshunter.io/developer/386093342) |

## What reviewers say

### EngineCalc

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

**Currently charting:** #184 Top Paid · Utilities (US App Store)

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


### FuelAdvisor for iPhone

[App page](https://appshunter.io/ios/app/fueladvisor-for-iphone/id387567378)

Easily estimate your fuel expenses before you visit the pump. Input basic details to get a clear understanding of your likely spending on gasoline.

**Highlights:** Fuel cost estimation, Expense tracking, Simple data entry, Cost projection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EngineCalc free?

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

### Is FuelAdvisor for iPhone free?

FuelAdvisor for iPhone is free to download, with no in-app purchases.

### Which has better reviews, EngineCalc or FuelAdvisor for iPhone?

FuelAdvisor for iPhone is rated higher. EngineCalc averages 2.3 out of 5 from 3 ratings, while FuelAdvisor for iPhone averages 5.0 from 3 ratings.

### Do EngineCalc or FuelAdvisor for iPhone have ads?

Neither EngineCalc nor FuelAdvisor for iPhone shows ads.

### Which is updated more often, EngineCalc or FuelAdvisor for iPhone?

EngineCalc ships an update every 2 months, and FuelAdvisor for iPhone every 5 days. Most recently, EngineCalc was updated on August 14, 2026 and FuelAdvisor for iPhone on September 27, 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.*