It is technically possible to use Tinder without your spouse knowing by employing various measures such as using the aforementioned incognito mode or adjusting your privacy settings. However, it's essential to consider the ethical implications of such actions. Relationships thrive on honesty, transparency, and mutual respect. If you're considering using a dating app while in a relationship, it's usually best to have a discussion with your partner about it. Misunderstandings and mistrust can cause significant harm to a relationship, and it's important to maintain open communication. Also, remember that nothing on the internet is 100% private. There's always a risk that your activities could be discovered, whether it's through someone seeing the app on your phone, recognizing your profile, or through data breaches. It's important to consider the potential impact on your relationship and your partner's feelings before deciding to use Tinder or any similar app secretly.