I have just the scanner and an iPhone 6 - I just enter all my data into the MySugr app on my phone. Bit of a faff to do that, but the scanner doesn’t store any data other than BG, insulin dose and carb amount. But in MySugr I record mood, weight, other meds, food groups, food photos, before/after whatever meal, activity and it keeps track of steps too. You need to download the scanner to the computer to get extra information, it only stores your numbers for 90 days.