Yes, the Capital One Mobile app is free to use.

You can access optional security features through the app, including a biometric sign-in setting that uses facial recognition or fingerprint recognition to verify your identity. Further, you can customize your settings to include real-time account alerts that notify you of suspicious activity on your account, including potential credit card fraud.  The Capital One Mobile app uses a number of security features to help protect your account. These security measures include two-step authentication, real-time fraud and purchase alerts and a card lock feature that allows you to block others from us

There are several ways to download and set up the Capital One Mobile app: Download and install the app from either the Apple App Store or Google Play. Text the word “CONFIDENCE” to 80101. Scan the QR code at the top of this page to access a secure download link. For returning users, after you download the Capital One Mobile app, simply sign in with your Capital One username and password or enable biometric sign-in to save time.