OurFamilyWizard, the legal-grade default
OurFamilyWizard has been the default answer for high-conflict, court-involved UK separated families for several years. The product was built in the United States and is widely referenced by family courts there. In the UK it is increasingly recognised by family solicitors and Cafcass officers as a workable option for families with active reporting requirements.
The strengths are real. The message log is properly tamper-resistant. The Tone Meter, an opinionated text-tone analyser on outgoing messages, has its critics but does materially reduce escalation in many cases. The bundled exports (the 'My Files' system) are built for the legal process. If you are in active proceedings, OurFamilyWizard is the safer default.
The costs are also real. Pricing starts at around £99 per parent per year on the Standard tier and rises with bundled professional access. For a separated family with two parents, the annual cost sits at roughly £200 before any add-ons. The product is over-specified for most low and mid-conflict families. The user interface feels American, which is a small thing but a real one. The Children's Code posture is improving but not native.
The honest summary: if you are in court or expect to be, OurFamilyWizard is the safer default. If you are not, the per-parent pricing and the heaviness of the product tend to push families back to WhatsApp within months. Haevn was built explicitly for that group.