Who can see it
A memorial that is public by default is a decision the provider has made on your behalf. It should be yours.
Trust
Three questions decide whether a family can rely on a digital memorial: who can see it, who controls it, and what happens to it years from now. Some of those we can answer from the product itself. Where we cannot yet, this page says so rather than reassuring you.

Check three things in this order: who can see the memorial and whether that can be changed; who is able to manage and add to it besides the person who set it up; and what happens to the record over the long term — cost model, ownership of the content, and whether it can be taken elsewhere.
Everything below either points to a longer answer or states plainly that the question is unresolved. If you are still comparing providers, the buyer's checklist covers the commercial side.
A memorial that is public by default is a decision the provider has made on your behalf. It should be yours.
If a memorial depends on one login on one phone, it is one forgotten password away from being unreachable.
Cost model, content ownership and portability decide whether a memorial outlives the person who created it.
That depends entirely on the provider and the setting chosen. Some memorial platforms are public by design and indexed by search engines. A Moments by QR page can be public, public with role and access controls, or private and PIN-protected.
Families often want different things — a community tribute in one case, a record only close relatives see in another. The detail of the three modes, who manages a memorial, and what a scan opens is set out in privacy and family control.
Moments by QR defines four roles — Owner, Delegate, Contributor and Nominee — so a memorial is not tied to a single account. Roles are assigned and managed inside the app.
We do not publish a table of exactly what each role can and cannot do. The permissions behind each role are not something we are willing to state in writing until they are confirmed, and a memorial platform that guesses about access control is not one worth trusting.
This is the question providers answer least clearly. It has three separate parts: how long the record is kept, who owns the photographs and writing once uploaded, and whether a family can take that content elsewhere.
Moments by QR sells the memorial under a Lifetime Licence for a one-off £79.99 — that is the current commercial wording for the purchase, not a legal guarantee about the future of any company. We keep those two things apart deliberately. Ownership, export and what happens if a provider closes are handled at length in permanence and data ownership, in plain terms.
None of these are specific to us. Ask them of whoever you choose, and be wary of an answer that arrives as marketing copy rather than a plain sentence.
If a provider will not answer the last three in writing, that is itself an answer.
Choose who can see it, share management across the family, and keep the record in one place rather than scattered across phones.

The three privacy modes, the four roles, and what a QR scan opens.
How long a memorial lasts, who owns the content, and what if a provider closes.
The seven-question buyer's checklist, provider by provider.