I know not everyone has access to an iPhone and it might be awhile before they are availible on prescription but I've found the following app useful for recording peak flow, symptoms, triggers and inhaler usage.
shaun-austin.com/InhalerTra... is useful for keeping track of how many doses are left in inhalers without a proper dose counter, particularly useful for relievers. It costs £1.19 though.
Edit to add:
The one for keeping track of your preventer is great, it comes up with a reminder 5 days before you run out so that even if it's a weekend you'll have time to order a new one.
I didn't like the AsthmaMD app as the well/worse/critical colourbands did not seem to be customiseable even when you put your personal best PEF in, so despite PEF being around 60% of my PB I was still in the green zone (My PB is much higher than predicted) I guess I could ignore the colours, but they always made me feel like a fraud, like I shouldn't have been feeling *that* poorly. That was back in july though, so they could have updated it now I guess.
havent got one but that sounds like a really good idea
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