There’s no doubt about it: app production has skyrocketed. But curiously, a number of children’s book publishers and app developers are now thinking twice about the format. After dipping the proverbial toe in the water, some companies have put app development on hold, while others are exploring their options, trying to determine how to create these costly innovative items and still make a buck. ... But that doesn’t mean there hasn’t been a slew of exceptional products this year, and you’ll find a number of them on our list.