# ASTM 54 B vs VesBuddy

The clearest difference is price: VesBuddy at Free against ASTM 54 B's $9.99. VesBuddy also leads on update cadence (weekly vs every 6 months) and device support (3 vs 1). ASTM 54 B's advantage is in-app purchases (none vs 1). On ads there is nothing between them.

VesBuddy is free to download; ASTM 54 B costs $9.99 up front. VesBuddy sells 1 one-off in-app purchase. ASTM 54 B asks for nothing beyond the download.

ASTM 54 B ships an update every 6 months, VesBuddy weekly. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ASTM 54 B | VesBuddy |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 130 MB |
| Requires iOS | 17.6 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Oleksii Nezhalskyi](https://appshunter.io/developer/1687730603) | [Alan Rosario Gautham H](https://appshunter.io/developer/1706460877) |

## What reviewers say

### ASTM 54 B

[App page](https://appshunter.io/ios/app/astm-54-b/id6449903055)

This application calculates fuel weight for ships based on ASTM 54 B standards. Users input volume and observed temperature to receive precise calculations.

**Highlights:** ASTM 54 B fuel weight calculation, Input volume and temperature, Automatic calculation, User-friendly interface

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

**In-app purchases:** none


### VesBuddy

[App page](https://appshunter.io/ios/app/vesbuddy/id6468884039)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SeaBuddy PRO | $6.99 | one-time |


## Frequently asked questions

### Is ASTM 54 B free?

ASTM 54 B costs $9.99, with no in-app purchases.

### Is VesBuddy free?

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

### Do ASTM 54 B or VesBuddy have ads?

Neither ASTM 54 B nor VesBuddy shows ads.

### Which is updated more often, ASTM 54 B or VesBuddy?

ASTM 54 B ships an update every 6 months, and VesBuddy weekly. Most recently, ASTM 54 B was updated on October 8, 2026 and VesBuddy on October 17, 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.*