# Engineering Forms vs Pipe Hydraulic Network Viewer

The clearest difference is in-app purchases: Engineering Forms at none against Pipe Hydraulic Network Viewer's 1. Engineering Forms also leads on iOS requirement (12.4 vs 15.0). Pipe Hydraulic Network Viewer's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Pipe Hydraulic Network Viewer sells 1 one-off in-app purchase. Engineering Forms asks for nothing beyond the download.

Engineering Forms ships an update every 3 months, Pipe Hydraulic Network Viewer every 6 weeks. The most recent releases landed on May 24, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Engineering Forms | Pipe Hydraulic Network Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 1 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ITECH PROJECTS LTD](https://appshunter.io/developer/1411332906) | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) |

## What reviewers say

### Engineering Forms

[App page](https://appshunter.io/ios/app/engineering-forms/id6479765443)

Streamline project management, contract handling, and validation processes for engineers. Generate detailed reports directly from your mobile device and sync seamlessly with a web portal for continued work on your laptop. Customize forms or build your own to suit various engineering trades.

**Highlights:** PPM contract management, Project and validation tracking, In-app report generation, Web portal synchronization, Customizable form builder, User and team management, Secure data sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Hydraulic Network Viewer

[App page](https://appshunter.io/ios/app/pipe-hydraulic-network-viewer/id6754879365)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroViewer Pro | $2.99 | one-time |


## Frequently asked questions

### Is Engineering Forms free?

Engineering Forms is free to download, with no in-app purchases.

### Is Pipe Hydraulic Network Viewer free?

Pipe Hydraulic Network Viewer is free to download, with in-app purchases available.

### Do Engineering Forms or Pipe Hydraulic Network Viewer have ads?

Neither Engineering Forms nor Pipe Hydraulic Network Viewer shows ads.

### Which is updated more often, Engineering Forms or Pipe Hydraulic Network Viewer?

Engineering Forms ships an update every 3 months, and Pipe Hydraulic Network Viewer every 6 weeks. Most recently, Engineering Forms was updated on May 24, 2026 and Pipe Hydraulic Network Viewer on September 15, 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.*