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Re:Ask HN: Successful one-person online businesses? by WA on Wednesday October 23, 2019 @06:33AM (#21333175)
The latter. The articles teach people about the niche domain/subject. The app is merely mentioned as an option to make life a bit easier.
Re:Ask HN: Successful one-person online businesses? by stedaniels on Wednesday October 23, 2019 @07:50AM (#21333594)
Having the graphs in the app is much easier than doing yourself.