ReGo: Research on the go! is a tool for user-reported data collection. This app is a complement to our data collection portal (https://researchonthego.eu). It can be used for experience sampling, as digital diary, or as a tool for patient-reported outcomes or patient-reported experience measures. ReGo helps researchers and health professionals to conveniently and safely collect data that reflects the daily experiences of their customers. Choose from several measurement instruments, including vis