# Heat Engineer vs Knohow for Members

The clearest difference is in-app purchases: Knohow for Members at none against Heat Engineer's 1. On price, update cadence, ads and monetization model there is nothing between them.

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

Heat Engineer ships an update every 2 months, Knohow for Members monthly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Heat Engineer | Knohow for Members |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/knohow-for-members/id6475733007/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 78.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 306 MB | 252 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Heat Engineer Software Ltd](https://appshunter.io/developer/1461678894) | [KAZZAH INC](https://appshunter.io/developer/1724169109) |

## What reviewers say

### 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 |


### Knohow for Members

[App page](https://appshunter.io/ios/app/knohow-for-members/id6475733007)

Discover local professional services recommended by your trusted network. Organize, book, and pay for services all in one place, saving you time and effort.

**Highlights:** Personal connection network, Discover trusted local resources, Organize professional services, Book services, Pay for services

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

**In-app purchases:** none


## Frequently asked questions

### Is Heat Engineer free?

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

### Is Knohow for Members free?

Knohow for Members is free to download, with no in-app purchases.

### Do Heat Engineer or Knohow for Members have ads?

Neither Heat Engineer nor Knohow for Members shows ads.

### Which is updated more often, Heat Engineer or Knohow for Members?

Heat Engineer ships an update every 2 months, and Knohow for Members monthly. Most recently, Heat Engineer was updated on November 1, 2026 and Knohow for Members on November 4, 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.*