The best alternatives to Lightmob are Darkroom, Snapseed 2.0, and Fotoji. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hurree— The smarter, simpler way to analyze your data
Fotoji is a visually lead photography teaching tool that teaches you how to master your DSLR camera. •Work through 15 interactive lessons and activities •Get the look you want with Shutter Speed, ISO and Aperture calculators. •Access over 250 professional recipe images by subject •Use the animated cameras to navigate your own DSLR camera