Annys Bossom from Brampton, Cambridgeshire, was among the 2,500 patients who took part in the trial.
She has a twisted pelvis, hypermobility and has suffered from back pain for 25 years.
“At first I was very disappointed to be offered an app but, once I tried it, I really enjoyed it. It was so easy,” she said.
“I’ve had lots of treatments in the past, but this offered me exercises I’d never seen before and they’ve really worked.
“Having them demonstrated on the screen was so much more motivating than having them written on a piece of paper – and I could choose when I did them.”
Sharon McMahon, a primary school teacher from Hardwick, Cambridgeshire, was unable to work for two weeks when she experienced severe back pain.
She had been waiting for 17 weeks for treatment when the app became available.
“I started my treatment the same day, and was able to get appointments and complete exercises whenever I liked. I was back to normal after a couple of weeks.”