One thing about these kind of apps to serve their

One thing about these kind of apps to serve their purpose, they need data.

Now in the end a service might choose one app they they will recognized for an individual to get though their doors (ex able to board an airplane).

It doesn't mean that that one app will not be receiving its data from a single source.

Take Innova, Abbott and IBM for a moment.

It would be a more reasonable scenario that Innova results are recorded on Innova QMC Healthid App and the Abbot test results are recorded on the Abbott App.

Then the results on those two apps (and many others) are transmitted to a central APP say IBM which is the passport used to get though the door.

Now on a smaller level where one is not dealing with a population of a whole country or the world, like a school, Corporation, local restaurants, theater etc.

This provides another market separate from those that deals larger populations from all parts of a country or world. (air travel, cruising), where one company test and app may be the sole provider of the service.

So no matter whose APP may be end up being the "Passport" Innova QMC Health will most likely record the results of the Innova test than transmit those secure results to that "Passport"

INNOVA “health passport.” As many governments, such as the United Kingdom’s National Health Service, may have their own tracking app, the INNOVA architecture will adapt to different protocols"

It is a "ECOSYSTEM" after all.

To answer you question IMHO two sources of payment

1) QMC will get paid bu Innova as an accessory to keep their test competitive with the rising competition (same way the makers of heated seat get paid by the car manufacturer)

2) QMC will get paid by schools, Corporations, sporting/entertainment events that uses one product to keep their limited environments Covid free.