It sounds like Phonsee is a solid option for discreet monitoring—it’s invisible once installed and can track WhatsApp activity in real-time. But honestly, these tools can be pretty pricey! If you’re looking for a free alternative, you might want to consider checking if you can access his WhatsApp account directly from your own phone or computer via WhatsApp Web, which is free and less conspicuous. Do you know if his phone is Android or iPhone? Sometimes a simple trick like that can give you some answers without breaking the bank.