Totality by Big Kid Science

Having many un-fond memories of plotting the centerline and north & south limits of the July 11, 1991 & other total solar eclipses on photocopied paper maps, I was delighted when I discovered the Totality app a couple of months ago! The interactive eclipse track map in Totality is truly welcome. Plus, the map displays your current location, thus leaving no doubt as to your position relative to the centerline. Kudos to the highly responsive developer who has today released version 4.0.1 which fixed an intermittent crashing-on-launch issue that the 4.0.0 version released 3 days ago had, so the app is solid & stable once again. I highly recommend this easy to use (and free) app which is suitable for eclipse chasers of any level of experience.

I love the interactive map feature. The details of the map surpass other apps that I have looked at in preparation of the eclipse. I've even been able to use it to pinpoint the best spot on the lake to watch! I'm an elementary science lab teacher in KY where we have a path of totality nearby so I especially appreciate the tabs available to educate people about eclipses and the section on classroom activities. Ironically, I already had some of the exact activities in my lesson plans for the next couple of weeks. The free app is definitely worth taking the time to download in time for the eclipse even if you've waited until the last minute!

It gives detailed information about the eclipse at your location or any location. Great for scouting out locations to determine if trees or mountains will obstruct any part of the eclipse. The Azimuth/Altitude of each contact is extremely helpful. It isn't clear if the azimuth is referenced to true or magnetic north. I assume true, but if the app were explicit about this, it would remove any doubt.