# Emoncms vs Octopus Energy Agile Watcher

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.

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.

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.

## The numbers

| Metric | Emoncms | Octopus Energy Agile Watcher |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/emoncms/id1169483587/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 55.6% of reviews | **78.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 36 MB | 5 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Megni](https://appshunter.io/developer/1169190655) | [Rob Sammons](https://appshunter.io/developer/659065077) |

## What reviewers say

### Emoncms

[App page](https://appshunter.io/ios/app/emoncms/id1169483587)

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:** macOS Compatibility

**In-app purchases:** none


### Octopus Energy Agile Watcher

[App page](https://appshunter.io/ios/app/octopus-energy-agile-watcher/id1499880851)

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:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 💡 Helps save money on energy
- 🚀 Fast and responsive developer support
- 📊 Clear display of energy rates
- 📱 Useful widgets and watch app integration

**What reviewers complain about**

- 🐛 Prices sometimes inaccurate
- 🐛 App stopped working for some users
- 🐛 Login issues and error loops
- 🐛 Not showing correct readings/rates
- 🐛 Inconsistent data compared to Octopus app

**Reported bugs**

- Prices no longer accurate
- Stopped working
- No longer giving correct readings and rates
- Constant error loop
- Can’t get passed login screen

**Requested features**

- 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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*