In this era of open source material, perhaps I should add the corresponding Android apps where available. I will review my current list and add Android alternatives. In the case of Green Solvents app on iOS, the corresponding Android app is Lab Solvents http://play.google.com/store/apps/details?id=com.mmi.android.labsolvents&hl=en
Thanks Antony, it is very good to know that RSC is now sponsoring the Green Solvents and LabSolvents apps. I will certainly give feedback on http://www.scimobileapps.com.