# E85 Calculator vs APR PCU

The clearest difference is update cadence: APR PCU at every 5 months against E85 Calculator's every 29 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

E85 Calculator ships an update every 29 months, APR PCU every 5 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | E85 Calculator | APR PCU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/e85-calculator/id1029273167/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 3 MB | 141 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sheharyar Irfan](https://appshunter.io/developer/974971911) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### E85 Calculator

[App page](https://appshunter.io/ios/app/e85-calculator/id1029273167)

This application helps performance enthusiasts and flex-fuel vehicle owners precisely calculate the amounts of E85 and gasoline needed for specific ethanol percentages or octane ratings. It offers both simple and advanced modes for fuel mixing calculations, supporting metric and imperial units.

**Highlights:** Calculate E85 and gasoline amounts, Target specific ethanol percentages, Calculate by desired octane rating, Metric and imperial unit support, Real-time calculations, Easy and advanced modes

**Features:** macOS Compatibility

**In-app purchases:** none


### APR PCU

[App page](https://appshunter.io/ios/app/apr-pcu/id6462687757)

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

**In-app purchases:** none


## Frequently asked questions

### Is E85 Calculator free?

E85 Calculator is free to download, with no in-app purchases.

### Is APR PCU free?

APR PCU is free to download, with no in-app purchases.

### Do E85 Calculator or APR PCU have ads?

Neither E85 Calculator nor APR PCU shows ads.

### Which is updated more often, E85 Calculator or APR PCU?

E85 Calculator ships an update every 29 months, and APR PCU every 5 months. Most recently, E85 Calculator was updated on November 1, 2026 and APR PCU on November 7, 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.*