Phase-folded detrended transit photometry of the TOI-178 planets obtained with CHEOPS (left) and TESS (right). For each planet, the photometry was corrected for the measured TTVs and for the transit signals of the other planets. The unbinned data points are shown in grey, while the coloured circles with error bars correspond to 15-min bins. The coloured lines show the best-fit transit models. The number of transits combined in each phase-folded light curve is also indicated in the plot.