TikTok's newly formed US entity is off to a very bumpy start. As the app continues to face technical issues affecting the recommendation algorithm, view counts and other features, TikTok is also seeing a wave of frustrated users uninstalling it, according to new data.Analytics firm Sensor Tower, which tracks downloads and other app store-related metrics, told CNBC that there has been a 150 percent rise in uninstalls of the TikTok app in the United States compared with the last three months. An analyst at Sensor Tower told Engadget that TikTok's US daily active users (DAUs) have increased about 2 percent in the same time period, and are flat week-over-week. TikTok has blamed a power outage at a data center for multiple bugs," including those affecting view counts and load times. The company hasn't said when users can expect a fix.At the same time, an independent app called UpScrolled has seen a surge in interest over the last few days. The app is currently the ninth most-downloaded app in the US App Store and the second most popular social app (Meta's Threads is currently in the number one spot for social apps). The app has also reached the top five in the UK and Australian app stores. In the United States, its sudden popularity seems to be closely tied to recent changes at TikTok.UpScrolled has seen 41,000 total downloads between Thursday (the day the US joint venture was formalized) and Saturday, according to estimates from App Figures. The app, which was first released last June, has been downloaded about 140,000 times between Apple and Google's app stores, according to App Figures. Prior to last Thursday, the app was averaging less than 500 downloads a day, according to the company. The rapid increase in downloads has apparently caused some issues for the company which asked users to "bear with us" on Monday.