# ASTM PRO vs Aegis ChemCalc

The clearest difference is price: Aegis ChemCalc at Free against ASTM PRO's $14.99. Aegis ChemCalc also leads on rating (5.0 vs 1.0) and ratings volume (4 vs 1). On ads, in-app purchases and device support there is nothing between them.

Aegis ChemCalc is free to download; ASTM PRO costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aegis ChemCalc holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

## The numbers

| Metric | ASTM PRO | Aegis ChemCalc |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/astm-pro/id6502639446/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/aegis-chemcalc/id6740779077/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 49 MB |
| Requires iOS | 15.2 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oleksii Nezhalskyi](https://appshunter.io/developer/1687730603) | [Aegis Chemical Solutions, LLC](https://appshunter.io/developer/1815306858) |

## What reviewers say

### ASTM PRO

[App page](https://appshunter.io/ios/app/astm-pro/id6502639446)

This application provides standardized tables for calculating petroleum quantities. It's designed for marine engineers and officers to ensure consistent measurements regardless of origin or units used.

**Highlights:** Standardized petroleum quantity calculation, Reference condition calculations, Supports multiple measurement systems, Applicable to crude oil and petroleum products, Designed for marine engineers

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

**In-app purchases:** none


### Aegis ChemCalc

[App page](https://appshunter.io/ios/app/aegis-chemcalc/id6740779077)

This tool provides essential calculations for oil well chemical applications. It features the most frequently used formulas for field operations, designed for efficiency and accuracy.

**Highlights:** Oil well chemical calculations, Common field calculations, Designed for field use, Accurate results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ASTM PRO free?

ASTM PRO costs $14.99, with no in-app purchases.

### Is Aegis ChemCalc free?

Aegis ChemCalc is free to download, with no in-app purchases.

### Which has better reviews, ASTM PRO or Aegis ChemCalc?

Aegis ChemCalc is rated higher. ASTM PRO averages 1.0 out of 5 from 1 ratings, while Aegis ChemCalc averages 5.0 from 4 ratings.

### Do ASTM PRO or Aegis ChemCalc have ads?

Neither ASTM PRO nor Aegis ChemCalc shows ads.

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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.*