Energy Logbook

Gas, oil & power costs

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Real energy costs, not just meter readings: one card per energy source, price history, energy index. Works with Home Assistant and EcoTracker. Buy once, no subscription. What does energy really cost you? Energy Logbook shows you: one card per energy source with costs, price history and energy index, for LPG, heating oil, pellets, firewood, electricity, natural gas, water and district heating. Most meter apps only remember readings. Energy Logbook works with your money: every delivery and every reading comes with a price, which gives you yearly costs, average cost per month and a price history that shows whether the next delivery will be dearer or cheaper. ONE CARD PER ENERGY SOURCE • LPG, heating oil, pellets and firewood as tanks: deliveries with quantity and price, current fill level, consumption since the start • Electricity, natural gas, water and district heating as meters: readings with a price per unit • This year's total cost at a glance FIGURES THAT MEAN SOMETHING • Cost per year and average cost per month • Price history per energy source as a chart • Energy index in kWh per m² and year with an efficiency class as a guide value from your consumption (using living area and calorific value; not an energy certificate) AUTOMATIC OR BY HAND You can enter everything by hand. If you like, Energy Logbook fetches values automatically: • Home Assistant: pick a sensor from a list, test the connection, done • EcoTracker (everHome): directly over your home network, no cloud • Custom JSON URL for devices such as Shelly or Tasmota Credentials are stored only in your iPhone's Keychain. YOUR DATA STAYS WITH YOU Energy Logbook has no accounts, no advertising and no tracking. Your entries stay on your device. Data is fetched only from where you set it up. GOOD TO KNOW • 7 days free trial, then a one-time purchase, no subscription. • Automatic fetching needs Home Assistant, an EcoTracker or a device with a local JSON interface, and you must be on the same Wi-Fi network. • You enter prices yourself; Energy Logbook does not provide market prices. • A detailed guide is built in (Settings → Help & guide), in English and German.

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The developer, Rainer Duerr, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

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    Information

    Seller
    Rainer Duerr
    Size
    1.2 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English and German
    Age Rating
    4+
    In-App Purchases
    Yes
    • Energy Logbook Full Version $12.99
    • 7-day Trial $0.00
    • Learn More
    Copyright
    © 2026 Rainer Duerr
  • Privacy Policy

    • More by Rainer Duerr