Table 2.
Characteristics of included dose calculator apps
| Number by platform (%) | ||
|---|---|---|
| Android (n = 21) | iOS (n = 25) | |
| App type | ||
| Standalone calculator | 6 (29%) | 11 (44%) |
| Diary with integrated calculator | 14 (67%) | 13 (52%) |
| Other* | 1 (5%) | 1 (4%) |
| Region of origin | ||
| Europe | 11 (52%) | 12 (48%) |
| North America | 6 (29%) | 8 (32%) |
| Asia and Australasia | 4 (19%) | 5 (20%) |
| Cost | ||
| Free | 9 (43%) | 10 (40%) |
| Paid for | 12 (57%) | 15 (60%) |
| Releases | ||
| Updated during study period | 5 (24%) | 12 (48%) |
| Updated in 12 months prior | 13 (62%) | 16 (64%) |
| Still available at close of study | 20 (95%) | 22 (88%) |
| Self-management features | ||
| Food database | 3 (14%) | 5 (20%) |
| Data sharing | 11 (52%) | 8 (32%) |
| Reminders | 3 (14%) | 3 (12%) |
| Other features | ||
| Clinical disclaimer | 11 (52%) | 16 (64%) |
| Accreditation | 1 (5%) | 2 (7%) |
| In-app help | 12 (57%) | 13 (52%) |
| Support contact | 10 (48%) | 16 (64%) |
*One app available for both Android and iOS contained information about insulin pump therapy but included a dose calculator as an additional feature. Many pumps themselves contain dose calculators, potentially rendering a separate calculator redundant.