Question Recommendion on Face Filter SDK for front and rear camera

hi Amazing people hope you all doing well. i am stuck in little issue i need help from you guys. i want to make filter using AR but AR Foundation does not support Rear Camera Face detection and only ARkit works on rear camera on iphone having OS above IOS 13. I also tried using Open CV for Face Detection but Accuracy of Open CV is not Good as Compare to AR foundation.
there are some SDK which provide Both Rear and Front cam face detection using AR tech. but they are on subscription base or paid . kindly recommend me any solution for face filters using both rear and front cam.
Thankyou in Advance.