What does Toggl do well? Toggl is a very high quality product with a substantial number of integrations designed to help small businesses who invoice based on time get the job done better, faster and with prettier reports. We primarily use Toggl when we have projects with billable hours, and generally use the Google Chrome add-on.
What does Toggl not do well? Toggl is very forgiving of errors, and rectification is easy, however we have had issues with reporting not updating fast enough after errors were rectified. (meaning our report out can vary depending on when it's pulled after the update.) I think that's a user thing, not a toggl thing... Also, system doesn't constrain who is allowed to modify time entries - I'd like to be able to limit who can make changes to time entries.
What do you wish you had known about Toggl before using? Toggl has used the freemium model well and many of the features we need are behind the pay-wall. (Not really a negative, but something to be aware of - we all have to make money)
Have you used a competitor to Toggl? If so, how does it compare? I have trialled Avaza, Plutio, and xero's time tracking. we also tried to use expensify's last year. I think Toggl is at least as good as most of these, and when you consider the ease of using the integrations which Toggl has added in recent months, I believe Toggl retains a leadership position in this space.