Cloud Topper 4+

A Modern Pilot Sight Level

Crop Applications, LLC.

Designed for iPad

    • $1.99



Pilots, it's time to get rid of your sight level, water bottle or whatever "old school" method you have been using to determine cloud height. Introducing Cloud Topper, a revolutionary new sight level designed specifically for the iPad and iPhone.

With Cloud Topper you can use your device camera, gyroscope and accelerometer as a traditional sight level. Plus you can enter the distance to a cloud and Cloud Topper will calculate your height above or below that cloud. The displayed cloud height is even corrected for the curvature of the earth.

Cloud topper is a fun, easy to use app that should be included in every pilots EFB.

Cloud Topper is not an FAA approved source to determine cloud height. Cloud Topper is not intended to replace weather radar or pilot skills and judgement. Always consult the Aircraft Manufacturer’s Aircraft Flight Manuals, Federal Aviation Administration (FAA) websites and publications, and individual company policies.

What’s New

Version 1.63

Added multiple rotation support.
Automatic calibration.
Full screen support.

Ratings and Reviews

2.7 out of 5
7 Ratings

7 Ratings

nvpatentlawyer ,

Limited Orientation

This app only works in landscape with the power input on the right. I find this annoying. It is also unclear how to use the miles function and there is no help function. Nice first try, but needs more refinement.

Walkinghispath ,

Great, simple tool

I use this app weekly to determine tops of cells and required altitude to clear a buildup or cloud bank. It does require correlation between radar/stormscope info for best accuracy. NEXRAD works in a pinch.

TXPilot69 ,


I deleted it immediately, and wish I could get my money back. Two big problems:

1) once the app is opened and you grant camera access, you can’t swipe up and kill it or switch apps. I had to force reboot my phone to get back to the app switcher.

2) it requires you to know the distance to the cloud you’re measuring “using RADAR”. Like I have that?!

Developer Response ,

Hello TXPilot69,

1) The app is oriented in landscape mode so you have to swipe up from the bottom when in landscape (you could also swipe from the left side, on the white bar, if holding your phone normally). This is the case for any app that is landscape orientated. The reason for the orientation is that the app uses you phones angle to work correct. If you continue to have issues with the app, I suggest emailing us and we will fix the issue. If we can’t fix the issue we’d be happy to send you a full refund of 99 cents.

2) If you don’t have weather radar, you can make an estimate of your distance to the cloud. You can also use the angle to determine if you are above or below the cloud. I suggest you get an app like ForeFlight and an ADS-B receiver to display weather radar. If you are in an airplane that doesn’t have an onboard weather radar, I’d suggest not trying to fly over the top of any convective activity. If you have another suggestion of how to determine the distance to a cloud through an app, we’d love to hear it.

App Privacy

The developer, Crop Applications, LLC., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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