# HyTools vs Plug&Fire

The clearest difference is update cadence: Plug&Fire at daily against HyTools's every 6 weeks. HyTools's advantage is iOS requirement (15.0 vs 17). 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.

HyTools ships an update every 6 weeks, Plug&Fire daily. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | HyTools | Plug&Fire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/hytools/id537674477/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free | — |
| Size | 114 MB | 54 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IMI Hydronic Engineering International SA](https://appshunter.io/developer/508015425) | [Alexandre VORON](https://appshunter.io/developer/1451696900) |

## 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


### Plug&Fire

[App page](https://appshunter.io/ios/app/plug-and-fire/id6753214312)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HyTools free?

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

### Is Plug&Fire free?

Plug&Fire is free to download, with no in-app purchases.

### Do HyTools or Plug&Fire have ads?

Neither HyTools nor Plug&Fire shows ads.

### Which is updated more often, HyTools or Plug&Fire?

HyTools ships an update every 6 weeks, and Plug&Fire daily. Most recently, HyTools was updated on September 28, 2026 and Plug&Fire on October 9, 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.*