Meet Smart Peak Flow: an app-enabled solution that helps you manage your asthma by keeping an eye on your lung function. It measures how much air you can force out as you exhale. Simply attach the device to your phone’s audio jack, and you are set. iOS and Android devices are supported. No battery is required.
More gadgets like this: here
Smart Peak Flow has an app that records and shows your readings and reminds you to take measurement.
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