I released the free, no registration required version (minimum viable product) last July 2009. I received feedbacks and feature requests and recently implemented them as a basic one-time fee paid version (with registration) for $9.95. There's a 30-day free trial period.
Was offering a one-time fee paid version a good idea? Only one person paid so far.
My goal this year is to release premium features as a monthly subscription version (I'm thinking $4.95 per month).
I get around 4000 visits per month (mostly coming from the US). I didn't really target any specific users when I released the app. After a few months, it seems teachers where majority of my users. What can I do to market the app more to teachers?
Also do you think this could earn at least US$2500 a month? That's my target goal for now.
By the way, I'm a one man startup from the Philippines.
Thank you very much.