Comparison

Wind Diagnostics vs COLT 4

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

Head to head

About

Wind Diagnostics

Features

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Siemens Gamesa Wind Diagnostics app allows you to monitor current production and status on your Siemens wind turbine fleet; on site and single turbine level. A detailed site map gives you the current status of the single turbines so you can follow the operational status of your sites – also when you are on the move. You can select a single turbine to get information about production, wind speed and events. Use the swipe navigation to navigate to any function of the app including choosing a specific site or turbine. Siemens Gamesa Wind Diagnostics app is free but you need to be a registered user of the customer portal Siemens Gamesa Wind Dialogue. Contact your Siemens site manager for your site to get started with the customer portal.

About

COLT 4

Features

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COLT app is a free-to-download app for the COLT (clamp on line tension meter). The COLT app's simple and easy-to-use interface will enable the operator to use the app with the utmost efficiency.

Screenshots

Wind Diagnostics1 screens

COLT 44 screens

Verdict

The call

The clearest difference is update cadence: COLT 4 at monthly against Wind Diagnostics's every 5 months. Wind Diagnostics's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Wind Diagnostics ships an update every 5 months, COLT 4 monthly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 4 level

Wind Diagnostics versus COLT 4: the parameters behind the verdict, then further details
Parameter	Wind Diagnostics	COLT 4
Price	Free	Free
Update frequency	Every 5 months	Monthly — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	9.0 — better	15.0
Further details — not scored
Size	87 MB	155 MB
Age rating	4+	4+
Developer	Siemens Energy	Straightpoint

In-app purchases

None

Wind Diagnostics

No in-app purchases

None

COLT 4

No in-app purchases

Questions

Is Wind Diagnostics free?

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

Is COLT 4 free?

COLT 4 is free to download, with no in-app purchases.

Do Wind Diagnostics or COLT 4 have ads?

Neither Wind Diagnostics nor COLT 4 shows ads.

Which is updated more often, Wind Diagnostics or COLT 4?

Wind Diagnostics ships an update every 5 months, and COLT 4 monthly. Most recently, Wind Diagnostics was updated on October 6, 2026 and COLT 4 on October 5, 2026.