You are downloading the Mono Photo XAP file v18.104.22.168 for Windows Phone. Mono Photo is a free and useful Photo & Video app: Mono Photo lets your photos have only Red, Green, Blue, Yellow, Red + Blue and Green + Blue, another area of the photo will be turned into grayscale. ... You can now download the offline XAP file to install & try it.
Download Locations for Mono Photo 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Mono Photo XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.