Compass heading for Coriolis in iPhone inconsistent

[Timber338]

Curious of anybody else has experience using the compass in their iPhone and/or using the Shooter app to obtain degrees of azimuth/heading for coriolis?

My iPhone is giving different compass headings every time I close the compass app or the Shooter app and start it up again.

I've toggled the "true north" setting on/off and done some stuff in the location services settings with compass calibration turned on/off. Nothing I do will make any of my compass apps or the Shooter app give me consistent readings.

At this point I'll just use my real compass and the appropriate declination to get my true azimuth when I'm out hunting/shooting, just curious if anybody out there has worked through this?

 

[FearNoWind]

The IPhone works on the Hall Effect principal which, IMO, is about as accurate as a Boy Scout compass.
Here's an article u might get something out of.


How accurate is the digital compass and level on your iPhone 5s? [Poll] | iMore

 

[Timber338]

The IPhone works on the Hall Effect principal which, IMO, is about as accurate as a Boy Scout compass.
Here's an article u might get something out of.


How accurate is the digital compass and level on your iPhone 5s? [Poll] | iMore

Gotcha. So worthless for determining an accurate heading. That goes along with what my iPhone compass is doing. I'm getting as big as 10 degrees delta from one reading to the next!

 

[Greyfox]

Check out the Theodolite app. It's been dead reliable all over NA and gives everything coordinatea, azimuth, angle, and more , including a picture if desired with all data that can be sent to photos for future reference.
I have had issues with the compass in my iPhone but have found much better apps.

 

[Timber338]

Check out the Theodolite app. It's been dead reliable all over NA and gives everything coordinatea, azimuth, angle, and more , including a picture if desired with all data that can be sent to photos for future reference.
I have had issues with the compass in my iPhone but have found much better apps.

Thanks, it looks like they offer a bundle of apps together. They look pretty cool!

 

[bill123]

I understand that it's frustrating and that the compass is useless for navigation but does it make a difference in terms of getting he right shooting data? I did s quick test for 43deg latitude, shooting east and north. I varied the azimuth by 10deg in 5 deg increments and the solution only changed by fractions of an inch at 1000 yds.

 

[Timber338]

I understand that it's frustrating and that the compass is useless for navigation but does it make a difference in terms of getting he right shooting data? I did s quick test for 43deg latitude, shooting east and north. I varied the azimuth by 10deg in 5 deg increments and the solution only changed by fractions of an inch at 1000 yds.

You are certainly right that +|- 10* doesn't add up to much of a real world difference. I was more curious if anybody else had delt with this, and it just seems like the iPhone compass sensor is just not accurate. It's pretty unlikely I'll he shooting out to 1000 yards anyways I just like to have everything as perfect as possible!