The = button on iPhone will scramble negative the number for the first tap, second tap will convert back to a close by number but not original number. I don’t know if it’s the calculation or Sporty’s ground school quiz answers are wrong. I got a different answer (off by 20 feet) when calculating density altitude. I made sure to clear all history and continue to be off of the quiz answers.

I deleted the app and reinstalled it to see if that would help. I enter the data but it produces nothing but zeros on the right side. This is a new issue. I hadn't previously had this issue seen it until about a week ago.

Version 3.4.5 when finding density altitude the App fills in the answer (appears to be correct) but when the = sign is pressed an incorrect answer is displayed. I don’t trust the app. I expected more from sportys.

Your so cool you make school fun

Great calculator/app. Use it all the time. Very user friendly!!

While completing some tasks it gives the correct answer without hitting the “=“ key. Which is handy, however, when hitting the “=“ key the app fails and kicks you out. Other than that it’s a great resource.

What kind of E6B app doesn’t have Weights and Balance!? This one. Unless you plug in a profile for a specific aircraft. Glad I wasted money on this app and it doesn’t have basic features.

Useful for aviation related questions. Also useful for many technical non aviation questions.

If you're considering this app for your iPad, look elsewhere. How long are they going to take to support the small size keyboard on ipad? All the other positives are moot with this app until they fix this. I never use the full size keyboard on iPad which makes using this app a total pain. Extra frustrating as a paid subscriber.

I was following the sportys ground school entered the same values and the output from app was over 20ft off from value shown on video. Not reliable wouldn’t trust this app.