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What took so long?
The book has actually been in a completed state for 3 months. Apple's publishing process turned out to be incredibly long and complex. I apologize for the delay.

Why isn't the book free?
I had originally intended to publish the book for free but it was evident that I needed to make it paid to create the best experience possible. The price will be used to cover licensing and publishing fees. I guarantee that it's worth $1.99.

Why is the book not available in my country?
I have launched the book in every country iBooks allowed me to. If it's not available in your region, it's unfortunately the limitations of the iBook Store. The experience is available in: 

Argentina, Australia, Austria, Belgium, Bolivia, Brazil, Bulgaria, Canada, Chile, Colombia, Costa Rica, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, El Salvador, Estonia, Finland, France, Germany, Greece, Guatemala, Honduras, Hungary, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Mexico, Netherlands, New Zealand, Nicaragua, Norway, Panama, Paraguay, Peru, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, United States, Venezuela

Do you have plans for availability on other platforms?
No. 90 Degrees is currently planned to remain iBook exclusive (only available on iPad and iPad mini).

How do I reach you?
You can email me. I can't guarantee a response but I try my best to read every email. For quick comments, you can also use Twitter. If there are bugs or other issues, I will collect and fix them as quickly as possible.