Table 2.
Comparative analysis of available apps for cystic fibrosis management and nutrition.
| Characteristic | CFa-specific apps (n=11), n (%) | Nutrition apps (n=9), n (%) | P value | z-value | |
| Licensing | .19 | 6.0 | |||
| Free | 8 (72) | 0 (0) |
|
|
|
| Payment | 3 (27) | 2 (22) |
|
|
|
| Freemiumb | 1 (1) | 7 (78) |
|
|
|
| Targeted user | .20 | 6.0 | |||
| Children | 2 (18) | 1 (11) |
|
|
|
| Adults | 6 (54) | 8 (89) |
|
|
|
| All | 3 (27) | 0 (0) |
|
|
|
| Number of reviews, range | 5-2160 | 0-55,000 | <.001 | –1.6 | |
| Number of downloads | .26 | 11.2 | |||
| 1-100 | 0 | 0 |
|
|
|
| 100-1000 | 4 | 1 |
|
|
|
| 1000-100,000 | 3 | 4 |
|
|
|
| 100,000-1,000,000 | 1 | 3 |
|
|
|
| 1,000,000-5,000,000 | 0 | 1 |
|
|
|
| Last update, aggregate | 2017 | 2018 | —c | — | |
| Usability score, mean (SD) | 2.66 (1.15) | 4.01 (0.90) | <.001 | –2.6 | |
aCF: cystic fibrosis.
bFreemium model combines free basic services and advanced payment services.
cNot applicable.