Before revision:  The model also shows that, while adopting the app is beneficial for epidemic control in most cases , a high adoption rate is likely to generate an extensive increase in the demand for testing, which, if not met with adequate supply, may render the app counterproductive.
After revision:  The model also shows that, while adopting the app is beneficial for epidemic control in most cases , a high rate of app users can generate an extensive increase in the demand for testing, which, if not met with adequate supply, may render the app counterproductive.