# C Reference vs Fluid Mechanics Pack

The clearest difference is review sentiment: Fluid Mechanics Pack at 100% against C Reference's 55%. Fluid Mechanics Pack also leads on rating (5.0 vs 2.0) and update cadence (every 9 months vs every 24 months). C Reference's advantage is price ($0.99 vs $3.99) and chart position (#197 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

C Reference costs $0.99 and Fluid Mechanics Pack $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 2.0. 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. Written reviews point the same way: 55% of C Reference's written reviews are positive against 100% of Fluid Mechanics Pack's.

C Reference ships an update every 24 months, Fluid Mechanics Pack every 9 months. The most recent releases landed on August 30, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | C Reference | Fluid Mechanics Pack |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/c-reference/id318595873/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/fluid-mechanics-pack/id533817127/reviews)** |
| Number of ratings | 1 | **12** |
| Positive reviews | 55.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 9 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#197** | — |
| Size | 1 MB | 5 MB |
| Requires iOS | 16.6 | **16.1** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Kenneth Wallace](https://appshunter.io/developer/318595876) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### C Reference

[App page](https://appshunter.io/ios/app/c-reference/id318595873)

**Currently charting:** #197 Top Paid · Reference (US App Store)

A comprehensive offline reference for the C programming language. It serves as a quick guide for experienced programmers and a learning tool for students, covering functions, data types, and control structures with syntax, descriptions, and code examples.

**Highlights:** Offline C programming reference, Categorized C functions, Data types and control structures, Syntax, description, and examples, Sample code for each detail sheet, No internet connection required

**In-app purchases:** none


### 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


## Frequently asked questions

### Is C Reference free?

C Reference costs $0.99, with no in-app purchases.

### Is Fluid Mechanics Pack free?

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

### Which has better reviews, C Reference or Fluid Mechanics Pack?

Fluid Mechanics Pack is rated higher. C Reference averages 2.0 out of 5 from 1 ratings, while Fluid Mechanics Pack averages 5.0 from 12 ratings.

### Do C Reference or Fluid Mechanics Pack have ads?

Neither C Reference nor Fluid Mechanics Pack shows ads.

### Which is updated more often, C Reference or Fluid Mechanics Pack?

C Reference ships an update every 24 months, and Fluid Mechanics Pack every 9 months. Most recently, C Reference was updated on August 30, 2026 and Fluid Mechanics Pack on September 18, 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.*