The main downside is most foes lurk behind various IAPs – would it have killed the BBC to throw in a Cyberman for free? Select a palette color and tap relevant grid squares to start coloring things in.Sadly, there’s no way to use the app to get all timey-wimey and change people’s minds when the app was being made.), Sandbox gives you a quirky combination of painting by numbers and old-school pixel art. Tap the wrong squares and your colors remain – but the numbers stick around in zoomed view, reminding you of your ‘error’.
Creating comics is akin to slapping down stickers – only you can move things around later.
And you get a pleasingly diverse range of page layouts, along with a monster maker, so you can combine parts of the Doctor’s enemies into something suitably horrific.
Of those we unearthed, here's our pick of the best free i Pad apps.
Note that apps marked 'universal' will run on your i Pad and i Phone, optimising themselves accordingly.
Using the button you can further customize your creation with stickers, text and doodles.