# Fluid Mechanics Pack vs OilField Engineer

The clearest difference is rating: Fluid Mechanics Pack at 5.0 against OilField Engineer's 1.0. Fluid Mechanics Pack also leads on update cadence (every 9 months vs every 54 months) and ratings volume (12 vs 1). OilField Engineer's advantage is chart position (#200 vs unranked) and iOS requirement (13.0 vs 16.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Fluid Mechanics Pack costs $3.99 and OilField Engineer $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fluid Mechanics Pack holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Fluid Mechanics Pack has 12 ratings behind it against 1, so its average is the more settled of the two.

Fluid Mechanics Pack ships an update every 9 months, OilField Engineer every 54 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Fluid Mechanics Pack | OilField Engineer |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/fluid-mechanics-pack/id533817127/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/oilfield-engineer/id1042382933/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 54 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#200** |
| Size | 5 MB | 32 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [zhandos uakanov](https://appshunter.io/developer/625286817) |

## What reviewers say

### Fluid Mechanics Pack

[App page](https://appshunter.io/ios/app/fluid-mechanics-pack/id533817127)

This engineering toolkit provides 97 calculators and 28 converters for fluid mechanics, civil, and structural engineering. It supports both imperial and metric units, offering essential calculations for students, engineers, and researchers.

**Highlights:** 97 engineering calculators, 28 unit converters, Supports Imperial and Metric units, Fluid mechanics calculations, Civil and structural engineering tools, Key fluid dynamics numbers

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

**In-app purchases:** none


### OilField Engineer

[App page](https://appshunter.io/ios/app/oilfield-engineer/id1042382933)

**Currently charting:** #200 Top Paid · Reference (US App Store)

This app supports oilfield engineers and specialists with daily operations. It offers a news generator, over 300 calculators for drilling and production, reference tables, market prices, and a unit converter.

**Highlights:** Oil and Gas News Generator, 300+ Oilfield Calculators, Drilling and Production Reference Tables, Crude Oil and Gas Market Prices, Oil and Gas Unit Converter

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

**In-app purchases:** none


## Frequently asked questions

### Is Fluid Mechanics Pack free?

Fluid Mechanics Pack costs $3.99, with no in-app purchases.

### Is OilField Engineer free?

OilField Engineer costs $3.99, with no in-app purchases.

### Which has better reviews, Fluid Mechanics Pack or OilField Engineer?

Fluid Mechanics Pack is rated higher. Fluid Mechanics Pack averages 5.0 out of 5 from 12 ratings, while OilField Engineer averages 1.0 from 1 ratings.

### Do Fluid Mechanics Pack or OilField Engineer have ads?

Neither Fluid Mechanics Pack nor OilField Engineer shows ads.

### Which is updated more often, Fluid Mechanics Pack or OilField Engineer?

Fluid Mechanics Pack ships an update every 9 months, and OilField Engineer every 54 months. Most recently, Fluid Mechanics Pack was updated on November 10, 2026 and OilField Engineer on November 6, 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.*