Excel Add In trial
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Project Budget$250 - $750 USD
I created an excel add in and I was letting people use it for free (to evaluate) . I revised the add in and I want to sell it now. I will allow a 30 day trial period and only want to allow one installation per computer. Once the trial period expires, I want the new add in disabled(unless purchased) and want to prevent the user from reinstalling the older free(evaluation) add-in that does not have the trial period.
I will also need a website to market the add-in and accept payments/keep track of users and bill monthly etc. I have attached the evaluation file.
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