# CarbonData vs The Heating App

The clearest difference is iOS requirement: CarbonData at 12.0 against The Heating App's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CarbonData sells 1 in-app purchase, starting at $9.99 per month and The Heating App sells 2 in-app purchases, starting at $39.99 per month. Whichever you choose, the download price is not the number that matters.

CarbonData ships an update monthly, The Heating App every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | CarbonData | The Heating App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/carbondata/id1482376289/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 71 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vandyke Consulting LTD](https://appshunter.io/developer/1482376288) | [Equitotal Limited](https://appshunter.io/developer/1124880866) |

## What reviewers say

### CarbonData

[App page](https://appshunter.io/ios/app/carbondata/id1482376289)

This app streamlines the process of generating and issuing chimney-sweeping certificates. Personalize certificates with company details, customer information, and fault reports. Easily export completed certificates as PDFs via email, with options to attach photos and store copies locally.

**Highlights:** Personalized certificate generation, Customer contact integration, Fault reporting with traffic light system, Customer consent and signature capture, PDF certificate export via email, Local data storage, CSV data export

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock the app | $9.99 | per month |


### The Heating App

[App page](https://appshunter.io/ios/app/the-heating-app/id6446893882)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $39.99 | per month |
| Yearly Subscription | $399.99 | per year |


## Frequently asked questions

### Is CarbonData free?

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

### Is The Heating App free?

The Heating App is free to download, with in-app purchases available.

### Do CarbonData or The Heating App have ads?

Neither CarbonData nor The Heating App shows ads.

### Which is updated more often, CarbonData or The Heating App?

CarbonData ships an update monthly, and The Heating App every 2 months. Most recently, CarbonData was updated on November 3, 2026 and The Heating App on November 3, 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.*