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H&R Block at Home - This app makes it easy to file your federal and state taxes on the go. Snap a pic of your W2 and import it into your return, even get alerts when your return is accepted and on its way to your bank account. Plus, your information can be transferred over from your federal to your state return for easy completion. The upside to this app is that it's free to prepare and free to e-file.
TurboTax SnapTax - File both your federal and state taxes by snapping a photo of your W2s and answering a few questions. You can e-file both federal and state returns, but it'll cost you $25.