SafetyCulture is excellent for building your own digital forms, audits and checklists across many sites and sectors. Its strength is flexibility.
CertFlow is the better fit where the output is a UK statutory certificate. Rather than building your own forms, you start with discipline-specific templates such as the EICR, CP12 and LOLER Report of Thorough Examination, an asset register that knows what is due when, and a compliance register you can export for an auditor.