With a complex web app like Freckle, caching issues can occur when we make improvements. To resolve this issue, just press Ctrl + Shift + R (or Cmd + Shift + R on a Mac).
If that doesn't work, there are more specific directions for Chrome here: https://support.google.com/chrome/answer/95582?hl=en.
And for Firefox here: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache.