Table 1.
Number of apps by feature offered.
| Mobile app store |
||
|---|---|---|
| iOS | Android | |
| Sleep Structure | ||
| Duration | 33 (100%) | 27 (100%) |
| Awake | 23 (70%) | 20 (74%) |
| Light Sleep | 21 (64%) | 21 (78%) |
| Deep Sleep | 23 (70%) | 21 (78%) |
| REM | 6 (18%) | 7 (11%) |
| Sleep Efficiency | 15 (45%) | 19 (70%) |
| Sleep Debt | 3 (9%) | 7 (11%) |
| Extra Features | ||
| Movement Tracker | 8 (24%) | 3 (11%) |
| Sound Recorder | 15 (45%) | 7 (11%) |
| Smart Alarm | 24 (73%) | 15 (56%) |
| Sleep Aid | 9 (27%) | 8 (30%) |
| Notes | 12 (36%) | 17 (63%) |
| Heart Rate Monitor | 6 (18%) | 1 (4%) |
| Apple Health | 11 (33%) | N/A |
REM (rapid eye movement).