WattSaver for Octopus Energy

UK Agile prices, usage & bills

Free · In‑App Purchases

New: free electricity sessions priced at £0 in prices, scheduling and widgets, plus Weekend Happy Hour credits in Usage. Fixes the newest Intelligent Octopus Go tariffs. For Octopus Energy customers in the UK. Find the cheapest half-hours to run your dishwasher, washing machine or EV charger, priced on your actual tariff. Free to use, and you don't need an Octopus account to start. Pick a device, set how long it runs, and WattSaver scans every half-hour slot to show the best start time and what it will cost. Put the free price widget on your home screen to see the current unit rate at a glance. Works with Octopus import and export tariffs, including Agile, Tracker, Flexible, Cosy and Intelligent Octopus Go. FREE - Find the cheapest time to run any appliance - Today's and tomorrow's half-hour prices - Home screen widgets showing the current unit rate and today's prices - Scheduling constraints: earliest start, latest finish, delayed start and finish-by times - One saved device template - iPhone, iPad and Mac WATTSAVER PRO A single one-time purchase. No subscription. - Connect your Octopus account and detect your tariffs automatically - Smart meter electricity and gas usage by day, week, month or year - Live demand and same-day usage with an Octopus Home Mini - Compare one period against another — usage, cost, export profit and net value, using the tariffs active at the time - See what that usage would have cost on a different tariff — Agile, Tracker, Flexible or any other product in your region - Compare import and export rates - 30-day price history with colour-coded highs and lows - Intelligent Octopus Go smart charging slots, with alerts when Octopus adds bonus cheap slots - Free electricity sessions priced at £0, and Weekend Happy Hour credits shown alongside your usage - Notifications when new Agile and Tracker rates are published - Unlimited device templates - Live usage widgets and a Mac menu bar readout - Apple Watch app HOME ASSISTANT, SOLAR AND BATTERY (PRO) If you run Home Assistant, WattSaver Pro connects to it and shows live grid, home, solar and battery power, plus battery charge, in its Live views and widgets. If you use Predbat, WattSaver Pro imports your Predbat plan and uses it alongside Octopus prices — showing charge, discharge and solar windows on your charts, and letting scheduling prefer battery charging, excess solar or peak solar periods. WattSaver does not measure your home directly: live readings come from the Home Assistant sensors you choose, and Predbat data is read from the plan URL you provide. WattSaver is an independent app and is not affiliated with Octopus Energy, Home Assistant or Predbat.

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WattSaver 8.3 - Fixed device scheduling picking a slot up to two days away: unless you set a "finish at most by" time, the cheapest window is now always within the next 24 hours - Fixed account login for customers on the newest Intelligent Octopus Go tariffs: connecting your account failed with "Could not find tariff" because Octopus no longer publishes those unit rates publicly. WattSaver now reads the off-peak schedule from your account during login too Also in this release: - Intelligent Octopus Go on the newest tariffs: import prices come straight from your account's off-peak schedule, so prices, schedule and widgets keep working - Free electricity sessions: the hours Octopus gives away free are priced at £0 in your prices, schedule, widgets and recent costs - Weekend Happy Hour and Free Electricity Reward credits appear in Usage, with the amount Octopus credited for each period - Compare Tariffs screen: pick a period and any tariff available in your region, and see what you actually paid next to what that same usage would have cost on Agile, Tracker, Flexible or anything else - The price widget is free: put the current Octopus unit rate and today's prices on your home screen without WattSaver Pro - Buy WattSaver Pro directly on your Apple Watch - Intelligent Octopus Go: price and usage views reveal the bonus cheap slots Octopus schedules for your charging, applied to your prices and recent costs and refreshed as Octopus re-plans them - Get notified when Octopus schedules a bonus smart charging slot outside your fixed overnight window - View Agile Export Rates screen, with the colour scale flipped so the best-paid export slots stand out - Compare screen: compare one period with another, including import, export, gas and overall net cost, with matched date ranges, aligned charts, totals and deltas

The developer, motocode ltd, 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

    The developer does not collect any data from this app.

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

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    motocode ltd
    Size
    24.1 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.5 or later.
    • iPhone
      Requires iOS 17.5 or later.
    • iPad
      Requires iPadOS 17.5 or later.
    • Mac
      Requires macOS 15.0 or later.
    • Apple Vision
      Requires visionOS 1.2 or later.
    • Apple Watch
      Requires watchOS 11.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Stefanos Zachariadis