We have made substantial progress on the pressio-demoapps repository. This repository contains a suite of 1D, 2D and 3D demo problems of varying complexity (from linear advection, to 2D and 3D compressible Euler). The main feature of this work is the built-in support for hyper-reduction. This code, in fact, was originally started as part of the Pressio project to create a suite of benchmark problems to test ROMs and hyper-reduction techniques, but it is being developed to be self-contained, so it can be used for different purposes. For example, you can just use it for doing “standard” simulations, or you can just leverage the Python meshing scripts, or leverage the hyper-reduction capability to study function approximations. Its main scope is to provide a testbed of problems that are well-known to be hard for ROMs, explore the impact of the numerical scheme, and test news ideas for hyper-reduction.