It could be interesting but it would really depend on the features. I do not do hair but almost all tanning software is also able to handle hair. I'll let hair salons chime in what is important for them but currently there are established software for a single price or ongoing fee at or less than $50 per month. I do like apts online but does this do anything else? Does it track sales, client marketing, reporting, taxes?
Today, people can host a website for about $5 per month so there needs to be alot of other benefits to justify an extra $540 per year of expenses.