200$ and here you go:

https://www.amazon.com/FLIR-One-Thermal-Imager-For/dp/B0728C7KND

Got you covered… redneck style:

FLIR ONE Gen 3 - iOS - Thermal Camera for Smart Phones - with MSX Image Enhancement Technology https://www.amazon.com/dp/B0728C7KND/ref=cm_sw_r_cp_api_i_DS3PCXZB77E1M2RC9R39?_encoding=UTF8&psc=1

https://nightvisionexperts.com/products/2-million-candlepower-hot-swap-infrared-spotlight