# Heat Engineer vs apGwynedd

The clearest difference is review sentiment: Heat Engineer at 79% against apGwynedd's 33%. Heat Engineer also leads on ads (none vs shown) and update cadence (every 2 months vs every 8 months). apGwynedd's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.4). On price and device support there is nothing between them.

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

Heat Engineer ships an update every 2 months, apGwynedd every 8 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Heat Engineer | apGwynedd |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **78.9% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | **Free** | Ad-supported |
| Size | 306 MB | 20 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) | [Cyngor Gwynedd Council](https://appshunter.io/developer/1401384376) |

## 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 |


### apGwynedd

[App page](https://appshunter.io/ios/app/apgwynedd/id1401384377)

Easily report local issues like potholes or dog fouling with photos and location data. Access council services such as bus timetables, waste collection, and pay for school dinners. Track your inquiries and manage your council account.

**Highlights:** Report local issues (potholes, dog fouling), Attach photos to reports, Use location data for precise reporting, Access bus timetables, Order garden waste collection, Pay for school dinners, Track inquiries and receive updates

**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 apGwynedd free?

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

### Do Heat Engineer or apGwynedd have ads?

apGwynedd shows ads; Heat Engineer does not.

### Which is updated more often, Heat Engineer or apGwynedd?

Heat Engineer ships an update every 2 months, and apGwynedd every 8 months. Most recently, Heat Engineer was updated on October 18, 2026 and apGwynedd on October 10, 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.*