Table 4.
Services and the number of apps using them (N=3251).
| Generic Attribute service | Apps, n (%) |
| Heart rate measurement | 41 (1.26) |
| Glucose measurement | 26 (0.79) |
| Running speed and cadence | 14 (0.43) |
| Cycling speed and cadence | 13 (0.39) |
| Blood-pressure measurement | 13 (0.39) |
| Body composition measurement | 12 (0.36) |
| Weight measurement | 10 (0.3) |