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Percentage completion of the study diary and App presented by weeks of the study. A completed day was regarded as a day with ≥500 kcal energy recorded [33]. SD: standard deviation.
| Week | Percentage completion (SD) | Diet recording tool |
| 1 | 96 (4) | Paper diet record |
| 2 | 92 (7) | Paper diet record |
| 3 | 82 (2) | Paper diet record |
| 4 | 73 (7) | Paper diet record |
| 5 | 66 (8) | App |
| 6 | 61 (4) | App |
| 7 | 54 (3) | App |
| 8 | 64 (4) | App |
