Warning: TSP Funds smartphone app not recommended Published March 12, 2013 BUCKLEY AIR FORCE BASE, Colo. -- The Thrift Savings Plan website issued a warning to smartphone users to avoid using the "TSP Funds" app from the Apple App store as it is neither offered through TSP, nor is it sanctioned by TSP. The free app asks participants for account login information, which poses a potential security risk. The warning from the TSP website reads: Warning: Apple App store offering TSP App not sanctioned by TSP -- A free iPhone App, TSP Funds, currently being offered through the Apple App store asks TSP participants for their account login information. This app is not being offered through the TSP and the TSP does not recommend using this application to access your TSP account. Providing this information could result in a security risk to your account. View the warning at https://www.tsp.gov/whatsnew/plan/planNews.shtml#iPhoneApp