I downloaded taxcaster and its saying that my federal refund is 578$ but i filed on TurboTax and its saying my federal refund is 1107$ did i do something wrong?

Taxcaster is just an estimate.  There may be an entry that isn't in the app when calculated. You can go through your return again step by step and verify your entries.  If you still feel like something is incorrect, you can complete an amendment.  Please see below for additional details (2019 is not available as of yet):

https://ttlc.intuit.com/community/amending/help/how-to-amend-change-or-correct-a-return-you-already-filed/00/25588

And it may be giving the estimated refund for next year 2020.