- This is a free 90 days trial version, which at the end of the trial period you will be offered with in-app subscriptions plans for your convenience.
- Users of the old app (green icon), be aware that if you choose to install this update your data will be lost and you will be moved to subscription model; this app is a major update and was built from ground to top.

Designed by pilots for pilots. Our main goal is to provide you with a quick and professional way to calculate your aircraft weight and balance.

- Sync data between devices
- iPad landscape & portrait support
- Build your own aircraft templates
- Enjoy a growing templates library
- Professional load sheet summary
- Variable fuel loading support
- Manage tail numbers easily
- Metric and US units support

- Categories: Normal, Utility, Aerobatic
- Additional: Restricted, Info
- Moment / 100 / 1000
- Variable maximum weights
- Maximum takeoff / landing / zero fuel

- Crew, Passengers, Baggage, Fuel, Oil, Gear, Other
- Set station weight unit
- Editable fuel / oil density
- Unlimited amount of stations
- Variable fuel moment table
- Moving stations (i.e Gear)

- Fully customized layout
- Pilot / student form with signature
- CG limits to meet part 135 requirements
- Export to email / Whatsapp / Facebook / Dropbox
- Small sized envelope

US - lbs, Gal, in, qt, ft
Metric - Kg, l, m, cm, mm
Moment - /100, /1000

- Avgas, Mogas, Jet A, Jet A-1

Limitations (all exist in our roadmap):
- CG measured in length and not %MAC
- Helicopters lateral calculations
- Up to one variable fuel loading table
- No gliders
- No anti-ice stations

We do our best to improve our app from update to update, if you have any suggestions please let us know and we will consider adding them in future updates. We believe in a quick and professional customer service, contact us at: or via the chat in the app and we will reply within 1 business day.


What's New

Version 2.0.7

What's New?
- My Weight Items, save pre-defined weights and use them later for faster weight and balance calculation.
- Show maneuvering speed in both Knots / MPH, and save it as preference.
- Import templates and select desired units (imperial, metric, and custom units).
- Improved envelope setup process for easier and faster results.
- Bug fixes and stability improvements.
- Dozens of new templates.

Ratings and Reviews

4.6 out of 5

546 Ratings

546 Ratings

As Good as it Gets

C210 Owner

Once you take the data from your POH and enter it in this system (which can take a while to get right the first time) it makes W&B calculation a breeze. They should create a website where users can post screenshots of their entries for various makes and models of aircraft, so we can cross-check each other to see if we are getting it right. I fly my family of 6 in my C210 so W&B is important. This app makes it speedy and easy to perform on my iPad. It allows you to set up multiple fuel tank entries and name the fuel tanks yourself (a recent upgrade) so I name one fuel tank with my "to the tabs" fuel quantity as part of the name as a reminder; in the other tank name I include the full-fuel quantity as a reminder. So if the fuel is zeroe'd out in the form to begin with, I don't have to stop and think what fuel amount I should plug in; I just plug the "suggested" fuel quantity in one tank and zero out the other.

Very happy with this app and the support


I recently bought this app to become familiar with my new plane and its loading complexities. I have been very happy with the flexibility of the app, and its ability to accommodate and display multiple scenarios in a clear, concise way.

In addition, setup was generally straight forward. I downloaded an existing similar template and modified it for my specific aircraft. I had a problem during set up, sent a request to app support and heard back right away with an offer to join me in the phone and work through the problem. We arranged a convenient time and spent only a few minutes walking through and resolving the issue.

So as good as the app is. . .the support is even better. A rare find nowadays!

Lots of potential, but a work in progress


I loved version 1 of the app. It was super easy to use and I could create pretty much any aircraft’s W&B envelope. After they pulled it I tried a few others but nothing came close to its usability and functionality.

When I saw they were releasing a new version I was pretty excited. I downloaded it right after it came out and have been trying to use it since. I seem to stumble across a different bug with each new version. It’s great for simple W&B or if there is an existing template that matches what I need. Creating custom envelopes has been a challenge. I’m hanging in there though, as there is a lot of potential for it to be better than the original.


Roy Kronenfeld
26.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2012 rkApps


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like