# Bunker One vs Integr8 Fuels

The clearest difference is update cadence: Integr8 Fuels at every 10 days against Bunker One's every 3 months. Integr8 Fuels also leads on iOS requirement (13.4 vs 15.6). 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.

Bunker One ships an update every 3 months, Integr8 Fuels every 10 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Bunker One | Integr8 Fuels |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/bunker-one/id439589227/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 16 MB | 45 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Askapps](https://appshunter.io/developer/434706041) | [Navig8 Asia Pte. Ltd.](https://appshunter.io/developer/1509002589) |

## What reviewers say

### Bunker One

[App page](https://appshunter.io/ios/app/bunker-one/id439589227)

This app provides a suite of calculators for marine fuel standards, including CCAI, Cetan Index, and blending calculations. It supports ISO 8217 and ASTM standards, with all inputs and outputs in SI units. Users can also access news and updates from the developer.

**Highlights:** ISO 8217 fuel standard lookup, CCAI Number calculation, Cetan Index calculation (old & new methods), Fuel blending calculators (viscosity, sulphur), Injection temperature calculation, Energy and price relation calculations, News updates from developer

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

**In-app purchases:** none


### Integr8 Fuels

[App page](https://appshunter.io/ios/app/integr8-fuels/id1519724470)

**In-app purchases:** none


## Frequently asked questions

### Is Bunker One free?

Bunker One is free to download, with no in-app purchases.

### Is Integr8 Fuels free?

Integr8 Fuels is free to download, with no in-app purchases.

### Do Bunker One or Integr8 Fuels have ads?

Neither Bunker One nor Integr8 Fuels shows ads.

### Which is updated more often, Bunker One or Integr8 Fuels?

Bunker One ships an update every 3 months, and Integr8 Fuels every 10 days. Most recently, Bunker One was updated on October 23, 2026 and Integr8 Fuels on October 25, 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.*