Downloading Chansey 1.0.2 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. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is Moeko Fujiki. The software lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
Chansey is a simple and easy-to-use screenshot generation tool. All you need to do is open or drag and drop the screenshot (image size is 750x1334 or 1242x2208), choose the style and the color, add a description, and export the result to various-sized screenshots.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be related to Chansey.