Accu-Chek SmartGuide Predict app

How reliable is the predicted information in the Accu-Chek SmartGuide Predict app? In which situations do I have to be careful with the predicted information?

All prediction algorithms meet high performance benchmarks. Because the prediction is generated from past data, not all contextual data is covered by the predictive algorithm, which might affect future glucose values.

Additionally, if you do not log insulin and carbs correctly, there is a chance that the predicted information does not precisely reflect your actual glucose excursion.