# Taco Tools vs testo Combustion App

The clearest difference is iOS requirement: testo Combustion App at 9.3 against Taco Tools's 15.6. On price, review sentiment, update cadence and ads there is nothing between them.

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

Taco Tools ships an update every 5 months, testo Combustion App every 7 months. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Taco Tools | testo Combustion App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.4 (10 ratings)](https://appshunter.io/ios/app/testo-combustion-app/id992414788/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | **20.0% of reviews** | 12.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 52 MB | 62 MB |
| Requires iOS | 15.6 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Taco, Inc.](https://appshunter.io/developer/461800454) | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) |

## What reviewers say

### Taco Tools

[App page](https://appshunter.io/ios/app/taco-tools/id461800450)

Easily select centrifugal pumps for hydronic heating and cooling systems. View pump performance characteristics for specific flow and head conditions. Access Taco product literature and contact technical support directly.

**Highlights:** Centrifugal pump selection, Performance characteristic viewing, Hydronic heating/cooling system application, Access to product literature, Direct technical support contact

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

**In-app purchases:** none


### testo Combustion App

[App page](https://appshunter.io/ios/app/testo-combustion-app/id992414788)

Control your testo 330 flue gas analyzer remotely from your smartphone or tablet. Create and send professional PDF reports with photos and your logo directly from the field, ensuring fast and efficient documentation.

**Highlights:** Remote start/stop of measuring instrument, Intuitive touchscreen menu, Graphical trend view, PDF report creation, Export measurement values to CSV, Customizable reports with logo, Bluetooth connectivity (20m range)

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

**In-app purchases:** none


## Frequently asked questions

### Is Taco Tools free?

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

### Is testo Combustion App free?

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

### Do Taco Tools or testo Combustion App have ads?

Neither Taco Tools nor testo Combustion App shows ads.

### Which is updated more often, Taco Tools or testo Combustion App?

Taco Tools ships an update every 5 months, and testo Combustion App every 7 months. Most recently, Taco Tools was updated on October 6, 2026 and testo Combustion App on October 16, 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.*