# Bunker One vs Shipmate Office

The clearest difference is update cadence: Shipmate Office at every 6 days against Bunker One's every 3 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.

Bunker One ships an update every 3 months, Shipmate Office every 6 days. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Bunker One | Shipmate Office |
| --- | --- | --- |
| 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 6 days** |
| Monetization | Free | — |
| Size | 16 MB | 31 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Askapps](https://appshunter.io/developer/434706041) | [SBN TECHNOLOGICS PRIVATE LIMITED](https://appshunter.io/developer/1618464238) |

## 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


### Shipmate Office

[App page](https://appshunter.io/ios/app/shipmate-office/id6760293300)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bunker One free?

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

### Is Shipmate Office free?

Shipmate Office is free to download, with no in-app purchases.

### Do Bunker One or Shipmate Office have ads?

Neither Bunker One nor Shipmate Office shows ads.

### Which is updated more often, Bunker One or Shipmate Office?

Bunker One ships an update every 3 months, and Shipmate Office every 6 days. Most recently, Bunker One was updated on October 23, 2026 and Shipmate Office on October 12, 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.*