# Installer App vs herz TS

The clearest difference is review sentiment: herz TS at 100% against Installer App's 53%. herz TS also leads on rating (5.0 vs 3.0) and iOS requirement (9.0 vs 15.0). Installer App's advantage is update cadence (every 5 weeks vs every 4 months) and ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

herz TS holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Installer App has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 53% of Installer App's written reviews are positive against 100% of herz TS's.

Installer App ships an update every 5 weeks, herz TS every 4 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Installer App | herz TS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (7 ratings)](https://appshunter.io/ios/app/installer-app/id423984641/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/herz-ts/id598691471/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 53.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Free | Free |
| Size | 90 MB | 4 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Danfoss A/S](https://appshunter.io/developer/423984644) | [Aleksandar Jovanovic](https://appshunter.io/developer/598691474) |

## What reviewers say

### Installer App

[App page](https://appshunter.io/ios/app/installer-app/id423984641)

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

**Highlights:** Radiator Presetting, Product Finder, My Projects (Cloud-based), Hydronic Balancing, Flow/Pressure Calculator, Floor Heating Tools, Burner Converter, Magnetic Tool

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

**In-app purchases:** none


### herz TS

[App page](https://appshunter.io/ios/app/herz-ts/id598691471)

This tool assists with heating system calculations and radiator valve selection. It offers a preset calculator and a dedicated radiator valve selection tool, sharing a common database and calculation engine.

**Highlights:** Preset calculator, Radiator valve selection tool, Shared calculation engine, Shared database

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Installer App free?

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

### Is herz TS free?

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

### Which has better reviews, Installer App or herz TS?

herz TS is rated higher. Installer App averages 3.0 out of 5 from 7 ratings, while herz TS averages 5.0 from 1 ratings.

### Do Installer App or herz TS have ads?

Neither Installer App nor herz TS shows ads.

### Which is updated more often, Installer App or herz TS?

Installer App ships an update every 5 weeks, and herz TS every 4 months. Most recently, Installer App was updated on October 14, 2026 and herz TS 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.*