'Meters' for iPhone

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If you have an iPhone, you might be interested in an App called 'Meters' by Graham Haley. It allows you to keep tabs on your Gas and Electricity usage. I use it to keep a record of my meter readings and how usage has changed, month by month. You can graphically display kWh or £, and you can set up your tariffs, discounts and price/supplier changes to get an accurate view of what you're using and have been charged for.

Just do a Google Search with 'meters graham haley' as your search criteria.