sweat
Loved by Davina Mccall and Katherine Heigl, this is the ultimate shaping-up helper for any upcoming holidays. Insta-star Kayla Itsines created the app with her fiancé Tobi Pearce, but there are a team of trainers on-hand depending on which programme you choose. Sweat is easy to follow, and the weekly meal plans are great, if a little costly. Each week, the workouts increase in intensity – perfect for keeping you motivated. free to download, premiums from £9.99