CETRA (Cambridge Exoplanet Transit Recovery Algorithm) detects transit by performing a linear transit search followed by a phase-folding of the former into a periodic signal search, using a physically motivated transit model to improve detection sensitivity. Implemented with NVIDIA’s CUDA platform, the code outperforms traditional methods like Box Least Squares and Transit Least Squares in both sensitivity and speed. It can also be used to identify transits that aren't periodic in the input light curve. CETRA is designed to be run on detrended light curves.