Anand Software and Training has recently developed practice tests to work on Apple iOS platforms and Android phones, apple phones and apple tablets. The practice tests include CCNA for apple ios, CCENT, ICND2, comptia A+, Security+ and others. You may visit the links below for free downloads.
Company apps page:
https://play.google.com/store/apps/developer?id=Anand%20Software%20and%20Training&hl=en
CCNA iphone (https://play.google.com/store/apps/details?id=com.anandsoft.ccnaexamsim125)
CCNA Security iphone (https://play.google.com/store/apps/details?id=com.anandsoft.ccnasecexamsim210)
CCENT iphone (https://play.google.com/store/apps/details?id=com.anandsoft.ccentexamsim105)
ICND2 iphone (https://play.google.com/store/apps/details?id=com.anandsoft.icndexamsim105)
CCNP Route iphone (https://play.google.com/store/apps/details?id=com.anandsoft.ccnproute300)
CCNP Switch iphone (https://play.google.com/store/apps/details?id=com.anandsoft.ccnpswitch300)
comptia a+ iphone (https://play.google.com/store/apps/details?id=com.anandsoft.aplusess)
comptia net+ iphone (https://play.google.com/store/apps/details?id=com.anandsoft.netplus)
comptia sec+ iphone (https://play.google.com/store/apps/details?id=com.anandsoft.secplus)
Full version of the practice tests are also available. Check out the anand software page here:
https://play.google.com/store/apps/developer?id=Anand%20Software%20and%20Training&hl=en