# 737 Brake Cooling vs Smart DGR

The clearest difference is in-app purchases: 737 Brake Cooling at none against Smart DGR's 2. 737 Brake Cooling also leads on iOS requirement (13.4 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Smart DGR sells 2 in-app purchases, starting at $8.99 per month. 737 Brake Cooling asks for nothing beyond the download.

737 Brake Cooling ships an update every 8 days, Smart DGR every 2 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 737 Brake Cooling | Smart DGR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Size | 14 MB | 17 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rene Klomp](https://appshunter.io/developer/1721880554) | [AvioDev Solutions LLC](https://appshunter.io/developer/1800257240) |

## What reviewers say

### 737 Brake Cooling

[App page](https://appshunter.io/ios/app/737-brake-cooling/id6479173703)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart DGR

[App page](https://appshunter.io/ios/app/smart-dgr/id6796352530)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart DGR Pro Monthly | $8.99 | per month |
| Smart DGR Pro Yearly | $74.99 | per year |


## Frequently asked questions

### Is 737 Brake Cooling free?

737 Brake Cooling is free to download, with no in-app purchases.

### Is Smart DGR free?

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

### Do 737 Brake Cooling or Smart DGR have ads?

Neither 737 Brake Cooling nor Smart DGR shows ads.

### Which is updated more often, 737 Brake Cooling or Smart DGR?

737 Brake Cooling ships an update every 8 days, and Smart DGR every 2 weeks. Most recently, 737 Brake Cooling was updated on October 25, 2026 and Smart DGR on October 29, 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.*