List of things that I would love to see on an update is as follows: A way to numerically enter in values to the node / sliders. It's extremely difficult to get ".5" centripetal or centrifugal spin value. And nearly impossible to match / pair it with a negative node of equal value. This feature alone would give this app some real world scientific application. As I've spent hours just attempting to do this - and on one or 2 occasions came close. And I successfully modeled a cross section of the field created by 2 wires caring current the same direction and the field of force for which they produce. There are many other such experiments I'd like to attempt but don't because of the deep frustration I experience when trying to "guesstimate" my low intensity field value by endlessly using the inaccurate sliders. An option for a number entry box would be a welcomed feature. Give the particles their own friction to each other which would cause a user defined amount of drag on the particles they touch and themselves. A drawing tool to add boundaries / walls and curves and give those objects a charge +, -, or neutral. This would allow us to simulate many experiments. Ions already is a scientific playground but I would love an app that would allow me to experiment & build simulations that would inspire deeper insights into fields of force, attraction, repulsion, wave / particle duality wrapped up in an beautiful app such as yours. Let me finish by saying I love your ions app (both of them) it's amazing to work with the fields and essentially play with science.

If I could rate this app 10 stars, I would! Of all the outstanding games and apps out there for iOS, Ions 2+ is one of the very best I’ve come across. You can get lost in this thing for hours just fiddling around with all the various buttons and sliders and man does it pay off! You can save all of your creations and delve into them any time you need a fix on that trippy thing you made. Really a very cool and relaxing app. Not at all a waist of time but more of an enhancement to time. Thanks for this hidden gem and I hope the word gets out and maybe even CNN will mention it. They should. It’s that good! And it’s only 99 cents!

At first, I used it as just an app to pass the time here and there when I had a few minutes to spare and the more I used it, the more fun I had with it! From making interactive winter scenes with snow falling in the foreground with a winter picture in the background to using it as an unconventional way to draw (just make it layer by layer, taking screenshots and then using those as backgrounds). I’ve even used it as a music visualizer when headphones are in. Although I don’t always play with it, it’s one of the few apps I keep coming back to!

The imagery is beautiful and easy to create with the simple interface however, there seems to be no way to remove the icons for the purposes of capturing a screenshot. So you may have something great going, and want to capture the image, but it will be littered with all of the little node icons. The snapshot option crashes the app so I don’t know if that’s supposed to do this. Also, using the touch controls is great fun, but if you have other ion nodes set up that you want to alter with touches, the risk of moving them accidentally is huge. There should be a way to both hide the icons/interface , and to also/simultaneously lock the nodes in place so you can touch freely with no worries. It would get 5stars otherwise but these are such glaring issues that it’s a wonder they weren’t implemented from day 1.