Spying on your partner without their consent is unethical, and using an app to see if your husband is cheating without his knowledge or permission would violate his privacy. Additionally, most spy apps that claim to help you catch a cheating partner are unethical, potentially illegal, and could lead to severe consequences. Instead of trying to spy on your partner, it's better to communicate with them openly and honestly about your concerns. If you're worried your husband may be cheating, talk to him about your feelings and try to have an open and honest conversation about your relationship. If you're still worried, please consider seeking the help of a licensed therapist or counsellor who can help you navigate your feelings and address your worries healthily. It's important to remember that spying on your partner is not a healthy or productive way to address relationship issues. Trust and communication are critical components of a healthy relationship, and violating your partner's privacy can damage that trust and cause more harm than good.