# HyTools vs Hydraulic schemes

The clearest difference is price: HyTools at Free against Hydraulic schemes's $0.99. HyTools also leads on in-app purchases (none vs 1) and ratings volume (5 vs 1). Hydraulic schemes's advantage is rating (5.0 vs 4.0) and review sentiment (77% vs 50%). On ads and device support there is nothing between them.

HyTools is free to download; Hydraulic schemes costs $0.99 up front. Hydraulic schemes sells 1 one-off in-app purchase. HyTools asks for nothing beyond the download.

Hydraulic schemes holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: HyTools has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of HyTools's written reviews are positive against 77% of Hydraulic schemes's.

HyTools ships an update every 6 weeks, Hydraulic schemes every 2 weeks. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | HyTools | Hydraulic schemes |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/hytools/id537674477/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydraulic-schemes/id1602894931/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 50.0% of reviews | **76.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 114 MB | 10 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IMI Hydronic Engineering International SA](https://appshunter.io/developer/508015425) | [Angel Martinez](https://appshunter.io/developer/1446956865) |

## What reviewers say

### HyTools

[App page](https://appshunter.io/ios/app/hytools/id537674477)

This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.

**Highlights:** Hydronic calculator, Valve sizing and presetting, Radiator power estimation, Pipe sizing, Unit conversion, Pressure maintenance calculation

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

**In-app purchases:** none


### Hydraulic schemes

[App page](https://appshunter.io/ios/app/hydraulic-schemes/id1602894931)

Easily design hydraulic, heating, cooling, and air conditioning schematics. Drag and drop symbols to quickly build your diagrams. Save and edit your work with the PRO version.

**Highlights:** Create hydraulic schemes, Drag and drop symbol placement, Extensive symbol library, Save and edit schemes (PRO), Export as image or PDF, Multiple HVAC system support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads, save/edit diagram | $3.99 | one-time |


## Frequently asked questions

### Is HyTools free?

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

### Is Hydraulic schemes free?

Hydraulic schemes costs $0.99, and also offers in-app purchases.

### Which has better reviews, HyTools or Hydraulic schemes?

Hydraulic schemes is rated higher. HyTools averages 4.0 out of 5 from 5 ratings, while Hydraulic schemes averages 5.0 from 1 ratings.

### Do HyTools or Hydraulic schemes have ads?

Neither HyTools nor Hydraulic schemes shows ads.

### Which is updated more often, HyTools or Hydraulic schemes?

HyTools ships an update every 6 weeks, and Hydraulic schemes every 2 weeks. Most recently, HyTools was updated on October 23, 2026 and Hydraulic schemes on October 27, 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.*