USAtlas Geology

Zoom only zooms to the center of the USA. The geologic units just show ages and you cannot press them for more info. Save the cash.

Dont get this. Seriously. Im insane about geologic maps. Im insane with hunting rocks. This is useless. The information is there but the amount of frustration and time it takes to access pertinent data makes this not a viable tool in any way. Paper maps. Technology is crap.

This is terrible. No auto location. No usable zoom.

Completely useless. It’s painfully slow and the map scale is so large you might as well just download a JPEG of the geologic map of the US which would cost you nothing. Unbelievably overpriced for such a useless app. DO NOT BUY

Very difficult to zoom in on an area, app pans away from centered area. Layers do not provide information when selected in map view. Do not recommend.

Zooming in changes the centerpoint. This makes the application unusable because a small zoom scale requires hundreds of swipes to return to the area of interest. Waste of money for a serious user. Avoid at any price until issue is fixed.

The positive reviews must be from relatives and friends. This is a complete waste without reworking the zoom capabilities. This is a terrible app. I wasted $5. Very generalized geologic map is essentially useless. If you load a more detailed state geologic map, there is no way to zoom in enough to see any detail. Zooming in shifts area of interest off of the screen! This is amateurish work. There is no way to center on the gps location! Really! I've never seen a gps capable app without this simple feature. What is worse is the fact that it is literally impossible to zoom into a specific location. So, you can see where you are in the northeast US, but can never get to a particular state. This is the worst iPad navigation I've seen. Do not waste your money or time on this app.

Terrible app unless you want to know what's going on on the other side the country because when you turn on location services it takes you 10 minutes locate the map in the center of the screen so you can see it And don't try to turn on later are you going to start all over

Zooming moves the centerpoint, usually shifting the area of interest right off the screen. Dragging to get back to the area of interest requires experience and talent - my current theory is that a long touch, followed by a slow drag, keeping the touch until the map shows up, may help. On an iPhone 4s, that's pretty much the end of the story. On an iPad mini 2, zooming and dragging are workable, but not great. Makes me wonder if the app is redrawing the entire world-space, instead of just the view-window. Vector maps can perform better than typical raster-tile maps, so being vector is no excuse. Nor would that explain the awful UI, nor the non-sticky settings. The only explanations I can think of are inexperienced programmers and no respect for users. Needed fixes - - Zoom centered on screen or between pinch touchpoints - Turning on location services should provide an option to center map at location (duh!) - Sticky settings So it looks like until the developers get their act together, I can't use this on the 64gb 4s I intended, but only on a 16gb device that doesn't really have room for it. Sigh.

This could have been a great resource, but poorly designed navigation makes it unusable. The user can't zoom to a particular location, because the map doesn't maintain center.