Can I save calories for the weekend?

You can 'officially' plan for an easier target if you know you're going out. Here's what to do:

In the app

Tap the blue menu button next to the search bar in your diary > Diary Preferences > Easier Days. Choose the day(s) of the week that you'd like an easier target for – say Saturday or Sunday. Tap the green Save button to apply your changes.

On the website

Click on the Settings link above your food diary on the left then select the Choose easier days link. Choose the day(s) of the week that you'd like an easier target for and click Apply Changes.

This will redistribute your calories across the week to give you a few more on your chosen day(s). The total number of calories across the week remains the same, so you will find that your weekday targets go down, but by planning for your treat, you know you're still on track.