It all depends on where you are going. For flights, we can usually save you $5-20 depending on the ticket. If you book flights with hotels or cars, we can save you 10-20% off the total price.
We cross-check hundreds of sites to find the lowest price but we also pass on any commission that the travel providers like Expedia, Marriott, United, Airbnb, etc, give us when you book.
If you want to see your potential savings, just install the app and give it a test drive. It is free.