| Preferences | No. (%) |
| Preferred frequency of prompt texts | |
| More than once a day | 6 (30) |
| Once a day* | 13 (65) |
| Every 2–3 days | 1 (5) |
| 20 questions included in the course was: | |
| Too many | 1 (5) |
| Right amount | 10 (50) |
| Too few | 9 (45) |
| Preferred maximum number of questions to answer per day | |
| 1–2 | 3 (15) |
| 3–4* | 13 (65) |
| 5–9 | 4 (20) |
| Preferred number of times question must be answered correctly before being retired | |
| More than 2 times | 6 (30) |
| Two times* | 12 (60) |
| Only once | 2 (10) |
| Amount of information in the explanations was: | |
| Too much | 9 (45) |
| Right amount | 11 (55) |
| Too little | 0 (0) |
| Course duration of 8 weeks was: | |
| Too long | 11 (55) |
| Right amount | 9 (45) |
| Too short | 0 (0) |
↵* Asterisked items indicate the frequency or amount used in the pilot mLearning course.