Table 2.
Pearson correlations* between total daily nutrient intake estimates from nutrition tracking apps and the Nutrition Data System for Research (NDSR; n 30 dietary recalls)
| Energy | ||||||
|---|---|---|---|---|---|---|
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | Lifesum | |
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·93 | 1·00 | ||||
| FibBit | 0·92 | 0·91 | 1·00 | |||
| Lose It! | 0·89 | 0·95 | 0·89 | 1·00 | ||
| MyPlate | 0·92 | 0·95 | 0·93 | 0·95 | 1·00 | |
| Lifesum | 0·94 | 0·95 | 0·94 | 0·93 | 0·95 | 1·00 |
| Total carbohydrate | ||||||
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | Lifesum | |
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·93 | 1·00 | ||||
| Fitbit | 0·94 | 0·94 | 1·00 | |||
| Lose It! | 0·73 | 0·77 | 0·75 | 1·00 | ||
| MyPlate | 0·93 | 0·91 | 0·94 | 0·78 | 1·00 | |
| Lifesum | 0·89 | 0·93 | 0·94 | 0·70 | 0·91 | 1·00 |
| Total protein | ||||||
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | Lifesum | |
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·93 | 1·00 | ||||
| Fitbit | 0·88 | 0·86 | 1·00 | |||
| Lose It! | 0·83 | 0·81 | 0·71 | 1·00 | ||
| MyPlate | 0·89 | 0·85 | 0·80 | 0·82 | 1·00 | |
| Lifesum | 0·96 | 0·93 | 0·90 | 0·82 | 0·85 | 1·00 |
| Total fat | ||||||
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | Lifesum | |
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·79 | 1·00 | ||||
| Fitbit | 0·84 | 0·84 | 1·00 | |||
| Lose It! | 0·75 | 0·78 | 0·82 | 1·00 | ||
| MyPlate | 0·87 | 0·84 | 0·85 | 0·82 | 1·00 | |
| Lifesum | 0·88 | 0·78 | 0·85 | 0·72 | 0·87 | 1·00 |
| Na | ||||||
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | ||
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·71 | 1·00 | ||||
| Fitbit | 0·77 | 0·75 | 1·00 | |||
| Lose It! | 0·60 | 0·47 | 0·70 | 1·00 | ||
| MyPlate | 0·70 | 0·71 | 0·74 | 0·49 | 1·00 | |
| Total sugars | ||||||
| NDSR | MyFitnessPal | Lose It! | MyPlate | |||
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·91 | 1·00 | ||||
| Lose It! | 0·84 | 0·88 | 1·00 | |||
| MyPlate | 0·93 | 0·96 | 0·88 | 1·00 | ||
| Dietary fibre | ||||||
| NDSR | MyFitnessPal | Fitbit | Lose It! | MyPlate | ||
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·82 | 1·00 | ||||
| Fitbit | 0·92 | 0·84 | 1·00 | |||
| Lose It! | 0·74 | 0·64 | 0·69 | 1·00 | ||
| MyPlate | 0·87 | 0·78 | 0·92 | 0·75 | 1·00 | |
| Cholesterol | ||||||
| NDSR | MyFitnessPal | Lose It! | MyPlate | |||
| NDSR | 1·00 | |||||
| MyFitnessPal | 0·81 | 1·00 | ||||
| Lose It! | 0·62 | 0·72 | 1·00 | |||
| MyPlate | 0·79 | 0·75 | 0·64 | 1·00 | ||
| Saturated fat | ||||||
| NDSR | Lose It! | |||||
| NDSR | 1·00 | |||||
| Lose It! | 0·57 | 1·00 | ||||
*
All correlations were statistically significant (P<0·05).