# Fluid Mechanics Calculator vs Silverson Conversion Tools

The clearest difference is price: Silverson Conversion Tools at Free against Fluid Mechanics Calculator's $2.99. Silverson Conversion Tools also leads on iOS requirement (8.0 vs 16.1). Fluid Mechanics Calculator's advantage is ratings volume (21 vs 3). On rating, update cadence, ads and in-app purchases there is nothing between them.

Silverson Conversion Tools is free to download; Fluid Mechanics Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Silverson Conversion Tools holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Fluid Mechanics Calculator has 21 ratings behind it against 3, so its average is the more settled of the two.

Fluid Mechanics Calculator ships an update every 7 months, Silverson Conversion Tools every 6 months. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fluid Mechanics Calculator | Silverson Conversion Tools |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.5 (21 ratings)](https://appshunter.io/ios/app/fluid-mechanics-calculator/id526974981/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811/reviews)** |
| Number of ratings | **21** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Paid | **Free** |
| Size | 11 MB | 9 MB |
| Requires iOS | 16.1 | **8.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Silverson Machines Limited](https://appshunter.io/developer/626189814) |

## What reviewers say

### Fluid Mechanics Calculator

[App page](https://appshunter.io/ios/app/fluid-mechanics-calculator/id526974981)

This app provides 97 calculators for fluid mechanics and civil engineering parameters. It supports both Imperial (USCS) and Metric (SI) units, offering automatic and accurate calculations with unit changes.

**Highlights:** 97 fluid mechanics and civil engineering calculators, Supports SI and USCS (Imperial) units, Automatic calculations with unit changes, Wide range of parameters covered, Civil engineering applications

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

**In-app purchases:** none


### Silverson Conversion Tools

[App page](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811)

This app provides engineers and operations personnel with tools to calculate the volume of vertical tanks of various shapes and top/bottom styles. It also includes multiple conversion tools for common measurements and a browser for product information.

**Highlights:** Vertical tank volume calculation, Multiple tank shapes and top/bottom styles, Unit conversion tools, Email/Share calculation results, Integrated product browser

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fluid Mechanics Calculator free?

Fluid Mechanics Calculator costs $2.99, with no in-app purchases.

### Is Silverson Conversion Tools free?

Silverson Conversion Tools is free to download, with no in-app purchases.

### Which has better reviews, Fluid Mechanics Calculator or Silverson Conversion Tools?

Silverson Conversion Tools is rated higher. Fluid Mechanics Calculator averages 4.5 out of 5 from 21 ratings, while Silverson Conversion Tools averages 4.7 from 3 ratings.

### Do Fluid Mechanics Calculator or Silverson Conversion Tools have ads?

Neither Fluid Mechanics Calculator nor Silverson Conversion Tools shows ads.

### Which is updated more often, Fluid Mechanics Calculator or Silverson Conversion Tools?

Fluid Mechanics Calculator ships an update every 7 months, and Silverson Conversion Tools every 6 months. Most recently, Fluid Mechanics Calculator was updated on October 14, 2026 and Silverson Conversion Tools on October 4, 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.*