<p>Octo is an open-source agile tariff monitor for anyone to see half-hourly tariff rates from Octopus Energy.</p><p style="font-weight:bold;font-size:larger;">Features</p><ul><li>See half-hourly agile prices</li><li>See kWh/£ usage</li><li>Price notifications</li><li>Calculate cheapest time to run an appliance</li><li>Home screen widgets</li></ul>