# Heat Engineer vs The Wealden Group

The clearest difference is in-app purchases: The Wealden Group at none against Heat Engineer's 1. The Wealden Group also leads on update cadence (every 6 days vs every 2 months) and iOS requirement (11.0 vs 16.4). On price, ads and device support there is nothing between them.

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

Heat Engineer ships an update every 2 months, The Wealden Group every 6 days. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Heat Engineer | The Wealden Group |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 78.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 306 MB | 54 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Heat Engineer Software Ltd](https://appshunter.io/developer/1461678894) | [Lance French](https://appshunter.io/developer/1407728135) |

## 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 |


### The Wealden Group

[App page](https://appshunter.io/ios/app/the-wealden-group/id1407728136)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Heat Engineer free?

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

### Is The Wealden Group free?

The Wealden Group is free to download, with no in-app purchases.

### Do Heat Engineer or The Wealden Group have ads?

Neither Heat Engineer nor The Wealden Group shows ads.

### Which is updated more often, Heat Engineer or The Wealden Group?

Heat Engineer ships an update every 2 months, and The Wealden Group every 6 days. Most recently, Heat Engineer was updated on November 1, 2026 and The Wealden Group on October 26, 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.*