Although it may work well once I'm signed up, personally I am about 10 times more reluctant to sign up for a monthly subscription in the first place. I don't

Although it may work well once I'm signed up, personally I am about 10 times more reluctant to sign up for a monthly subscription in the first place. I don't like that the price might change for month to month and I don't like that if something goes wrong with billing that it might cause the service to stop working (and if they have my data and it might get deleted while I'm on holiday then that's particularly bad). And finally unless I plan to only use it for a short time, it is nearly always very expensive compared to a one off purchase. So - if you want me to actually buy your software - make the pricing as simple and transparent as possible and make it either annual or one time purchase.