Downloading 1000 Slides 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application was originally developed by Samuel Cremer. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software is included in Design & Photo Tools.
From the developer:
1000 Slides lets you create presentations with PowerPoint or Keynote in just minutes instead of hours. Find over 1000 premium 3D PowerPoint and Keynote templates in one striking look and style! (You get 6x150 templates for free.) While the other templates apps in the App Store are offering you only nice color pictures for your cover and some decoration, here you find 1000 real slide templates in 6 modern preset colors to convey your messages.
You may want to check out more software for Mac, such as 1000 Slides - Templates for PowerPoint and Keynote, RMX-1000 Plug-in or House of 1000 Doors: Family Secrets, which might be similar to 1000 Slides.