When Frances was an infant, she was late to babble, walk and talk.
She was three before she would respond to her own name.
Their Maynooth-based start-up Funbakers plans seven episodes but you can download the first instalment in this Sherlock Holmes-esque adventure for free.
It is, after all, a choose-your-own adventure, dialogue-heavy game but it achieves a lot with a little.
The AR component feels underwhelming, however, a way to integrate "clues" into your surroundings with the phone camera that, like Pokémon Go, lacks believability.
Pelphrey is a leading autism researcher at Yale University's world-renowned Child Study Center.
But even he did not recognize the condition in his daughter, who was finally diagnosed at about five years of age.