# Touch Fluids vs Hydraulic ToolKit

The clearest difference is price: Hydraulic ToolKit at Free against Touch Fluids's $0.99. Hydraulic ToolKit also leads on update cadence (monthly vs every 13 months) and iOS requirement (15.1 vs 17.2). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Hydraulic ToolKit is free to download; Touch Fluids costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Touch Fluids against 5.0 for Hydraulic ToolKit. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Touch Fluids ships an update every 13 months, Hydraulic ToolKit monthly. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Touch Fluids | Hydraulic ToolKit |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/touch-fluids/id427420343/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydraulic-toolkit/id6468667309/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 15 MB | 23 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [Wade Trim Group, Inc.](https://appshunter.io/developer/1664648819) |

## What reviewers say

### Touch Fluids

[App page](https://appshunter.io/ios/app/touch-fluids/id427420343)

An educational tool for fluid mechanics courses, featuring basic equations and animations. It covers topics from fluid statics to flow in pipes, suitable for high school and university students. Teachers can use it to present concepts in class.

**Highlights:** Basic fluid mechanics equations, Illustrative animations, Fluid statics, Fluid in motion, Continuity and energy equations, Flow in pipes, Vector operations

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

**In-app purchases:** none


### Hydraulic ToolKit

[App page](https://appshunter.io/ios/app/hydraulic-toolkit/id6468667309)

Perform essential hydraulic calculations for water infrastructure design on the go. This portable tool offers quick checks for engineers and students, covering common formulas for pipes, channels, and more.

**Highlights:** Perform 7 hydraulic formulas, Supports imperial and metric systems, Quick calculation checks, Portable tool for field use, Reference hydraulic coefficients

**In-app purchases:** none


## Frequently asked questions

### Is Touch Fluids free?

Touch Fluids costs $0.99, with no in-app purchases.

### Is Hydraulic ToolKit free?

Hydraulic ToolKit is free to download, with no in-app purchases.

### Which has better reviews, Touch Fluids or Hydraulic ToolKit?

Touch Fluids and Hydraulic ToolKit are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Touch Fluids or Hydraulic ToolKit have ads?

Neither Touch Fluids nor Hydraulic ToolKit shows ads.

### Which is updated more often, Touch Fluids or Hydraulic ToolKit?

Touch Fluids ships an update every 13 months, and Hydraulic ToolKit monthly. Most recently, Touch Fluids was updated on October 13, 2026 and Hydraulic ToolKit on October 11, 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.*