# Velocity Triangles Analysis vs Hydraulic ToolKit

The clearest difference is update cadence: Velocity Triangles Analysis at every 2 days against Hydraulic ToolKit's monthly. Velocity Triangles Analysis also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Velocity Triangles Analysis ships an update every 2 days, Hydraulic ToolKit monthly. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Velocity Triangles Analysis | Hydraulic ToolKit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydraulic-toolkit/id6468667309/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Monthly |
| Monetization | — | Free |
| Size | 52 MB | 23 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aristotle University of Thessaloniki](https://appshunter.io/developer/542325073) | [Wade Trim Group, Inc.](https://appshunter.io/developer/1664648819) |

## What reviewers say

### Velocity Triangles Analysis

[App page](https://appshunter.io/ios/app/velocity-triangles-analysis/id1543899511)

**Features:** macOS Compatibility

**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 Velocity Triangles Analysis free?

Velocity Triangles Analysis is free to download, with no in-app purchases.

### Is Hydraulic ToolKit free?

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

### Do Velocity Triangles Analysis or Hydraulic ToolKit have ads?

Neither Velocity Triangles Analysis nor Hydraulic ToolKit shows ads.

### Which is updated more often, Velocity Triangles Analysis or Hydraulic ToolKit?

Velocity Triangles Analysis ships an update every 2 days, and Hydraulic ToolKit monthly. Most recently, Velocity Triangles Analysis was updated on October 15, 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.*