Last Friday, Tumblr in the help center noted that its app could not be downloaded, ensuring users were working to resolve the issue.
"Our team continues to work on the issue with the iOS app, which is our top priority at the moment. Thank you for your patience and to check back here for updates," he said, in an update on November 18.
However, beyond that, Tumblr or Apple have not made it clear why the app was deleted.
In February, Apple Telegram removed from App Store based on the message app being used to distribute illegal content, specifically child pornography, to consumers.
Apple's guides for appliance makers are so strict that anything available on the store will have to have a content filter to screen such material.
Within hours of being removed, Telegram returned to the App Store with decisions in place to prevent the illegal content being introduced to users.
Similarly, Tumblr has been used as a platform to share adult content, and places its users the responsibility to take advantage of such material as "Not Suitable for Work" to warn other users.
The site was even banned in Indonesia for a day in March, with Reuters reporting that the ban was following an email from the Indonesian Government asking Tumblr to be "clean its stage" of pornographic content.