Table 7.
Description of the 335 cardiology-related apps stratified by their minimally required iOS versions.
| iOS versiona | First date of release [37] | End of life for the following devices [37] | Apps (n) | Proportion (%) | Age (in days) on the readout date | Cumulative percentage (%) | |
| Minimum age | Median (IQRa) | ||||||
| 3.x | June 17, 2009 | iOS 3.1.3: iPhone 1st generation, iPod touch 1 | 2 | 0.6 | 2744.9 | 2892.11 (147.17) | 0.6 |
| 4.x | June 21, 2010 | iOS 4.2.1: iPhone 3G, iPod touch 2 | 6 | 1.8 | 1575.9 | 2076.26 (216.79) | 2.4 |
| 5.x | October 12, 2011 | iOS 5.1.1: iPad 1st generation, iPod touch 3 | 11 | 3.3 | 113.6 | 1599.42 (474.23) | 5.7 |
| 6.x | September 19, 2012 | iOS 6.1.6: iPhone 3GS, iPod touch 4 | 31 | 9.3 | 222.4 | 998.73 (495.18) | 14.9 |
| 7.x | September 18, 2013 | iOS 7.1.2: iPhone 4 | 47 | 14.0 | 5.7 | 586.39 (627.97) | 29,0 |
| 8.x | September 17, 2014 | N/Ab | 119 | 35.5 | 0.9 | 276.84 (329.45) | 64.5 |
| 9.x | September 16, 2015 | iOS 9.3.5: iPad 2 and 3, iPad Mini 1, iPhone 4S, iPod touch 5 | 79 | 23.6 | 0.1 | 68.25 (148.08) | 88.1 |
| 10.x | September 13, 2016 | iOS 10.3.3: iPad 4, iPhone 5 and 5C | 33 | 9.9 | 2.8 | 50.84 (130.24) | 97.9 |
| 11.x | September 19, 2017 | N/A | 7 | 2.1 | 33.2 | 83.69 (89.56) | 100 |
aMinimum version. For clarity, the information is summarized according to the main iOS versions.
bN/A: not applicable.