upgrade iphoto on os catalina

iPhoto was discontinued 6 years ago. It is no longer developed or sold. It was replaced by the more powerful (and free) Photos.app that comes with the OS. You can migrate to that app very simply:

Hold down the option (or alt) key and launch Photos. From the resulting menu select 'Choose Library' and point at your iPhoto Library. It will do the rest.

If you prefer not to use Photos there are several 3rd party apps that you can use. Which to choose depends on the kind of photographer you are and your budget.

Photos for Mac (coming preinstalled as a part of Catalina) can convert your iPhoto Libraries to new Photos Libraries, so you can access your iPhoto photos. All albums should be preserved, also the metadata and adjustments you added. The first launch of Photos should automatically convert the last used iPhoto Library.

No version of iPhoto will run in Catalina and newer. Switch to Photos or a non-Apple product.

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