# Taco Tools vs Heat Engineer

The clearest difference is review sentiment: Heat Engineer at 79% against Taco Tools's 20%. Heat Engineer also leads on update cadence (every 2 months vs every 5 months). Taco Tools's advantage is in-app purchases (none vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Heat Engineer sells 1 one-off in-app purchase. Taco Tools asks for nothing beyond the download.

Taco Tools ships an update every 5 months, Heat Engineer every 2 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Taco Tools | Heat Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | **78.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 52 MB | 203 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Taco, Inc.](https://appshunter.io/developer/461800454) | [Heat Engineer Software Ltd](https://appshunter.io/developer/1461678894) |

## 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


### Heat Engineer

[App page](https://appshunter.io/ios/app/heat-engineer/id879510552)

This app assists heating engineers and surveyors in collecting property data for heating system installations. It supports heat loss reports for various technologies and includes tools for sound assessments and quick estimations. Data is automatically saved for later review and amendment.

**Highlights:** Heat loss survey for BS EN 12831, CIBSE, and MCS standards, MCS 020 sound assessment for Air Source Heat Pumps, Quick heat loss estimator tool, Automatic data saving and history for amendments, Room-by-room heat loss calculation, Photo capture for rooms and installation locations, Fuel comparisons and running cost calculations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MCS 020 PDF Report Token | $2.99 | one-time |


## Frequently asked questions

### Is Taco Tools free?

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

### Is Heat Engineer free?

Heat Engineer is free to download, with in-app purchases available.

### Do Taco Tools or Heat Engineer have ads?

Neither Taco Tools nor Heat Engineer shows ads.

### Which is updated more often, Taco Tools or Heat Engineer?

Taco Tools ships an update every 5 months, and Heat Engineer every 2 months. Most recently, Taco Tools was updated on October 6, 2026 and Heat Engineer on October 2, 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.*