The essential functions of the programme work as advertised, although it is pretty time-consuming. But I would advise against it because of the attitude towards customers. The product creator asked what other features we would like, and when I suggested this, he said it would be possible only if I agreed to share the cost. I've been an AppSumo customer for 8 years and have probably bought several hundred programs in that time, but I've never experienced anything like this.
[My reaction to the creator's response]:
Wouldn't you want to read carefully what a potential customer writes to you? I specifically said that I was disgusted by the suggestion of sharing the cost of a possible new feature because it has NEVER happened to me before, not because I did not get it.
Would you prefer that I gave you a rating of "1" with a brief justification that I don't like the program or it doesn't work the way you say it does? Can't you see that the reasoning of my rating contains a positive opinion of the program? As such, it only criticizes your approach to customers.
By the way, why don't you take a look at the previously given "1" ratings? They all talk about unsatisfactory support or lack of it!