Download I-Photo 9.6.1

You are confusing IOS (for mobile devices only) and OS X (for Macs only) - Sierra is the current version of OS X

There is no download for iPhoto 9.6.1 - if you own a copy of iPhoto '11 and iPhoto is in your purchases list in the App Store then you can install iPhoto 9.6.1 from the App Store - in some cases Apple support has provided special links to customers to download and install iPhoto 9.6.1 - be aware that iPhoto is a dead program with no support that will quit working without notice with some future update

However a much smarter path is to learn and use Photos, the new and much more capable program - these links give some hints and advice on the migration - Links to User tips re migrating from iPhoto to Photos

LN

Which version of iPhoto do you already own, Bedna?

Apple is no longer developing and selling iPhoto. You can only update to iPhoto 9.6.1, if iPhoto is in your Purchases history at the AppStore. Barney's User Tip explains how to do that, if your iPhoto version is eligible, have a look:

Can't Update iPhoto because it is not available in the App Store

But I agree with Larry - Photos for Mac has been improved a lot, since it first came out, and migrating to Photos is a very good option.