Comparison

737 Brake Cooling vs Smart DGR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Dangerous goods for aircrew

Free

🔧 Utilities

No ratingsView app →

About

737 Brake Cooling

Features

Read full description

Calculate Recommended Brake Cooling Schedule for Boeing 737-700 and Boeing 737-800. Always crosscheck with your QRH or other approved source!

About

Smart DGR

Features

Read full description

The reference for dangerous-goods pros: search UN entries, hazard classes, packing instructions, and ERG & ADR emergency cards. No account, fully offline. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.aviodevsolutions.com/smartdgr/privacypolicy

Screenshots

737 Brake Cooling1 screens

Smart DGR4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 4 level

737 Brake Cooling versus Smart DGR: the parameters behind the verdict, then further details
Parameter	737 Brake Cooling	Smart DGR
Price	Free	Free
Update frequency	Every 8 days — better	Every 2 weeks
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	13.4 — better	17.0
Further details — not scored
Size	14 MB	17 MB
Age rating	4+	4+
Developer	Rene Klomp	AvioDev Solutions LLC

In-app purchases

None

737 Brake Cooling

No in-app purchases

2 purchases

Smart DGR

Subscriptions2

Smart DGR Pro Monthly$8.991 Month
Smart DGR Pro Yearly$74.991 Year

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.