Comparison

Emoncms vs Octopus Energy Agile Watcher

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Emoncms

This application allows users to view energy, temperature, and environmental data dashboards from Emoncms servers. It is an open-source tool designed for processing, logging, and visualizing environmental information.

Highlights
  • View Emoncms dashboards
  • Supports MyElectric dashboards
  • Connects to emoncms.org
  • Connects to custom Emoncms servers
  • Open-source application
  • Visualizes energy data
  • Visualizes environmental data
Features
Read full description

Open-source Emoncms dashboard viewer. View MyElectric Emoncms dashboards from http://emoncms.org or any other Emoncms server. Emoncms is an open-source web application for processing, logging and visualising energy, temperature and other environmental data developed as part of the http://openenergymonitor.org project. OpenEnergyMonitor is a project to develop open-source energy monitoring tools to help us relate to our use of energy, our energy systems and the challenge of sustainable energy. https://github.com/emoncms/emoncms-ios For support or to get involved with development please post on the forum: https://community.openenergymonitor.org/c/emoncms/mobile-app

About

Octopus Energy Agile Watcher

This app helps Octopus Energy Agile tariff customers monitor their electricity and gas consumption alongside real-time and upcoming energy rates. Set custom reminders for high-cost periods and access data easily on your Apple Watch or via Siri. Enjoy a private, ad-free experience with a one-time purchase.

Highlights
  • View current and upcoming energy rates
  • Track daily electricity and gas consumption
  • Set appliance reminders for rate changes
  • Configure high cost thresholds
  • Integrate with Siri Shortcuts
  • View rates on Apple Watch
Features
Read full description

Agile Watcher makes it easier to follow your Octopus Energy Agile electricity prices, find cheaper times to use power, and understand your energy use. Connect with your Octopus API key, check the home and meter details we find, and start watching your rates. Features • Current and upcoming prices: see the live half-hour rate, the next rate and prices ahead as Octopus publishes them. • Best Times: find the cheapest one, two or four hours, explore the price chart and set a reminder for your chosen window. • Electricity usage: explore up to 30 days of daily costs and consumption, with charts and half-hour detail. Partial and missing readings are clearly labelled. • Optional gas usage: view up to 30 days of gas consumption and estimated costs. Import your gas tariff when available, or enter it yourself. • Widgets and Apple Watch: keep useful prices close at hand, including an Apple Watch complication. • Siri Shortcuts: ask for the current Agile price or open today's prices. • Made for iPhone and iPad: light and dark appearances, modern iPad navigation and accessibility support. • Privacy: no advertising, tracking or analytics. Your account details stay on your device. • Pay once: no subscriptions, with ongoing updates included. An Octopus Energy account, API key and supported Agile import electricity tariff are required. Export tariffs are not supported. Availability of gas tariff details depends on your Octopus account. Prices and usage costs shown in the app are estimates; your final bill may differ. Agile Watcher is an independent app and is not affiliated with Octopus Energy. If your tariff does not work, contact agilewatcher@icloud.com.

Screenshots

Emoncms4 screens
Octopus Energy Agile Watcher4 screens

Verdict

The call

The clearest difference is price: Emoncms at Free against Octopus Energy Agile Watcher's $0.99. Emoncms also leads on iOS requirement (13.0 vs 18.0). Octopus Energy Agile Watcher's advantage is update cadence (every 2 months vs every 17 months) and review sentiment (79% vs 56%). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Emoncms is free to download; Octopus Energy Agile Watcher costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Emoncms ships an update every 17 months, Octopus Energy Agile Watcher every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Emoncms versus Octopus Energy Agile Watcher: the parameters behind the verdict, then further details
ParameterEmoncmsOctopus Energy Agile Watcher
PriceFree — better$0.99
Rating4.4 (5 ratings) — better—
Positive reviews55.6% of reviews78.9% of reviews — better
Number of ratings5 — better—
Update frequencyEvery 17 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS13.0 — better18.0
Further details — not scored
Size36 MB5 MB
Age rating4+4+
DeveloperMegniRob Sammons

Customer experience

Emoncms

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews9 reviews
Positive55.6%
Neutral33.3%
Negative11.1%

Octopus Energy Agile Watcher

Written reviews76 reviews
Positive78.9%
Neutral1.3%
Negative19.7%

Bugs and requests

Emoncms

Not enough reviews yet to summarise bugs or requests.

Octopus Energy Agile Watcher

Reported bugs

16 issues
  • Prices no longer accurate
  • Stopped working
  • No longer giving correct readings and rates
  • Constant error loop
  • Can’t get passed login screen
Show 11 more
  • Kept getting errors - nothing worked
  • No electricity tariffs
  • Anomalies in shown prices
  • App not working in nz
  • Not picking up the gas meter
  • Not work with octopus mini
  • Constant Error Loop
  • Be great if I could actually login
  • App not working in nz
  • Tariff updating issues
  • Blank screen apart from asking for manual inputs

Requested features

10 requests
  • Add notifications for peak/low periods
  • Include average pence per kWh in summaries
  • Add support for Agile outgoing and gas tracker tariffs
  • Implement email notifications for configurable prices
  • View Agile rates before tariff switch
Show 5 more
  • Combined view of gas and electricity
  • Configure billing cycle date for estimated bills
  • Provide average cost on electric per day
  • Add gas meter insight
  • Add plunge pricing alerts

In-app purchases

None

Emoncms

No in-app purchases

None

Octopus Energy Agile Watcher

No in-app purchases

Questions

Is Emoncms free?
Emoncms is free to download, with no in-app purchases.
Is Octopus Energy Agile Watcher free?
Octopus Energy Agile Watcher costs $0.99, with no in-app purchases.
Do Emoncms or Octopus Energy Agile Watcher have ads?
Neither Emoncms nor Octopus Energy Agile Watcher shows ads.
Which is updated more often, Emoncms or Octopus Energy Agile Watcher?
Emoncms ships an update every 17 months, and Octopus Energy Agile Watcher every 2 months. Most recently, Emoncms was updated on November 2, 2026 and Octopus Energy Agile Watcher on November 7, 2026.

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