Lo que buscaba precisamente y de seguridad, ya que me he aficionado a bajar cosas de la App Store por mayor seguridad. Cumple totalmente con lo que dice, muy buena herramienta para salvar algunos Gigas basuras. No le pongo 5 estrellas porque siempre se puede mejorar, pero se las merece.

Very insecure program, from version to version, it is compatible or not according to 10.11. 7.7.79 to 8.0.1 closed with a crash. From 8.0.4 to 8.3.8 they worked, or at least they opened without any problem or message, since I have never used it when checking its lack of compatibility and security. Now with version 8.4, it generates a crash again and offers you the possibility to block or continue with the insecure computer. I'm tired of her. The safest thing is to take the opportunity and start deleting junk from my hard drive, which is missing, and the first will be this program.I think I know the problems of using "obsolete" systems, but in my case it is forced because the machine does not support any more updates. And it doesn't seem logical to me to throw away a perfectly valid device. For me, ecology is that: making the most of physical devices. And the software, it could be demanded that it give more useful life and updates, but that is Apple. The insecure thing is to use a program incapable of ensuring compatibility or not with a certain operating system. Version by version, the mere fact of opening the program is a lottery, with constant crashes …In addition, a program that touches files of other programs, of the system, and that requires a perfect knowledge of those data that it modifies, if it does not even guarantee to recognize its compatibility with an OS, how does it guarantee the rest? Can not. Versions from 7.7.79 to 8.0.1 crash on open. Version from 8.0.4 to 8.3.8 opens. Version 8.4.4 crash now. New version 8.5.3 open well. This is the problem:If this version opens correctly, does it mean that the program is compatible or not? Some versions hang on opening, others don't. There is not the slightest assurance that compatibility is complete with a particular version or configuration. 

Le iba a poner 4 estrellas por no estar en español... Pero le doy la quinta porque es GRATIS. Buena aplicación que hace lo que dice.

pagué la versión premium y en mountain lion es la única aplicación que no me funciona. Instalo, desinstalo y vuelvo a instalar y nada. Ah, y si quiero de nuevo la versión premium, a pagarla. Lo dicho, muy descontento con la aplicación desde la actualización del S.O.