# Simple MPG Calculator vs NAC

The clearest difference is in-app purchases: Simple MPG Calculator at none against NAC's 1. Simple MPG Calculator also leads on iOS requirement (7.0 vs 13.0). NAC's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. NAC sells 1 in-app purchase, starting at $199.00 per year. Simple MPG Calculator asks for nothing beyond the download.

Simple MPG Calculator ships an update every 2 months, NAC fortnightly. The most recent releases landed on June 5, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Simple MPG Calculator | NAC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/simple-mpg-calculator/id454924511/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 1 MB | 3 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shane Stambaugh](https://appshunter.io/developer/454924514) | [Neubert Aero Corp](https://appshunter.io/developer/1785752651) |

## What reviewers say

### Simple MPG Calculator

[App page](https://appshunter.io/ios/app/simple-mpg-calculator/id454924511)

Easily calculate your vehicle's miles per gallon (MPG) at the gas station. This straightforward utility helps you track fuel efficiency quickly and efficiently.

**Highlights:** Quick MPG calculation, User-friendly interface, Fuel efficiency tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### NAC

[App page](https://appshunter.io/ios/app/nac-dfd-decelerometer/id6478895830)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U.S. Region | $199.00 | per year |


## Frequently asked questions

### Is Simple MPG Calculator free?

Simple MPG Calculator is free to download, with no in-app purchases.

### Is NAC free?

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

### Do Simple MPG Calculator or NAC have ads?

Neither Simple MPG Calculator nor NAC shows ads.

### Which is updated more often, Simple MPG Calculator or NAC?

Simple MPG Calculator ships an update every 2 months, and NAC fortnightly. Most recently, Simple MPG Calculator was updated on June 5, 2026 and NAC 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.*