# Radiator Calculator vs Firehawk Data Scan

The clearest difference is review sentiment: Radiator Calculator at 55% against Firehawk Data Scan's 3%. Firehawk Data Scan's advantage is price (Free vs $1.99) and update cadence (every 5 weeks vs every 16 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Firehawk Data Scan is free to download; Radiator Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Radiator Calculator ships an update every 16 months, Firehawk Data Scan every 5 weeks. The most recent releases landed on September 24, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Radiator Calculator | Firehawk Data Scan |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/radiator-calculator/id1445426217/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **54.5% of reviews** | 3.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 41 MB | 6 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Physmo](https://appshunter.io/developer/333188621) | [Graeme Brennan](https://appshunter.io/developer/1518735429) |

## What reviewers say

### Radiator Calculator

[App page](https://appshunter.io/ios/app/radiator-calculator/id1445426217)

Calculate the ideal radiator size and quantity for any room. Input room details like dimensions, glazing, and wall types to get precise recommendations. Save and email room specifications for later reference or client sharing.

**Highlights:** Calculate ideal radiator size and quantity, Input room details (dimensions, glazing, walls), Supports Feet and Metres, Save room specifications, Email results to clients or self, Adjust room type and adjacent room conditions

**Features:** Vision Pro support

**In-app purchases:** none


### Firehawk Data Scan

[App page](https://appshunter.io/ios/app/firehawk-data-scan/id1587368417)

Extracts data from specific Firehawk Carbon Monoxide alarms. Supports models CO7B10Y, CO7BD, CO7B10W, and CO10-RF for data retrieval.

**Highlights:** Data extraction, CO alarm monitoring, Firehawk CO7B10Y support, Firehawk CO7BD support, Firehawk CO7B10W support, Firehawk CO10-RF support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radiator Calculator free?

Radiator Calculator costs $1.99, with no in-app purchases.

### Is Firehawk Data Scan free?

Firehawk Data Scan is free to download, with no in-app purchases.

### Do Radiator Calculator or Firehawk Data Scan have ads?

Neither Radiator Calculator nor Firehawk Data Scan shows ads.

### Which is updated more often, Radiator Calculator or Firehawk Data Scan?

Radiator Calculator ships an update every 16 months, and Firehawk Data Scan every 5 weeks. Most recently, Radiator Calculator was updated on September 24, 2026 and Firehawk Data Scan on June 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.*