Yes, you have to create your ONE account in the iOS app, please download the app through this link:
http://app.onechain.one/appstart_en.html with invitation code: 444905.
Regarding the rewards for blogging articles, please refer to the general rules: Media Bounty 20% - 40 000 Tokens, we will determine how many tokens you will get at the end of campaign based on the number of articles and the quality of each articles.
All right, do you have an estimate about how much a good article, +1000 words and well researched could receive as reward?
Yes, we have such estimation, according to the Media rules in the Bounty campaign, your article must be original and contain at least 300 words. indeed,more words your article contains, more reward you will receive, and we will also look at the number of likes or comments for your article. The quality of the article is another important factor we need to consider.