# BurnCheck vs CM PM2.5

BurnCheck and CM PM2.5 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BurnCheck ships an update every 2 weeks, CM PM2.5 every 3 weeks. The most recent releases landed on March 6, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | BurnCheck | CM PM2.5 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 58 MB | 33 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Geo-Informatics and Space Technology Development Agency](https://appshunter.io/developer/1046208414) | [Chakrit Chotamonsak](https://appshunter.io/developer/1208089430) |

## What reviewers say

### BurnCheck

[App page](https://appshunter.io/ios/app/burncheck/id1556975247)

**Features:** macOS Compatibility

**In-app purchases:** none


### CM PM2.5

[App page](https://appshunter.io/ios/app/cm-pm25/id1630179097)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BurnCheck free?

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

### Is CM PM2.5 free?

CM PM2.5 is free to download, with no in-app purchases.

### Do BurnCheck or CM PM2.5 have ads?

Neither BurnCheck nor CM PM2.5 shows ads.

### Which is updated more often, BurnCheck or CM PM2.5?

BurnCheck ships an update every 2 weeks, and CM PM2.5 every 3 weeks. Most recently, BurnCheck was updated on March 6, 2026 and CM PM2.5 on September 13, 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.*