Buy if you don’t mind having your pocket picked
The original product was very good but failed once iOS 15 became available, at which time only the pro version worked. The pro version uses a subscription model and as another reviewer wrote, it is essentially a money grab. The developer correctly notes the original price of $3.00 was unsustainable, but instead of pricing a perpetual license in a way that fairly compensates him for his work he got greedy. I would pay $100 - one time - for a perpetual license but will not have my pocket picked year after year - this is more expensive than a lot of very popular desktop software.