# GridCarbon vs OctoTracker

The clearest difference is update cadence: OctoTracker at every 2 months against GridCarbon's every 4 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GridCarbon ships an update every 4 months, OctoTracker every 2 months. Both last shipped on June 8, 2026.

## The numbers

| Metric | GridCarbon | OctoTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (6 ratings)](https://appshunter.io/ios/app/gridcarbon/id346832866/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 75.7% of reviews | **81.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 10 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alex Rogers](https://appshunter.io/developer/346832869) | [Jonathan Ellis](https://appshunter.io/developer/1704835697) |

## What reviewers say

### GridCarbon

[App page](https://appshunter.io/ios/app/gridcarbon/id346832866)

Monitor the real-time carbon intensity of the UK electricity grid. Understand how electricity generation sources change and identify times when using power is more environmentally friendly. Reduce your carbon footprint by shifting energy consumption to periods of lower grid emissions.

**Highlights:** Real-time carbon intensity updates, Traffic light indicator for intensity levels, Generation mix summary, 24-hour carbon intensity plot, Interactive generation mix chart

**Features:** macOS Compatibility

**In-app purchases:** none


### OctoTracker

[App page](https://appshunter.io/ios/app/octotracker/id6463722470)

Monitor daily and future energy prices for Octopus Tracker customers. Get real-time insights, plan consumption, and visualize price trends. Receive notifications and use widgets for easy access to energy rate information.

**Highlights:** Monitor today's and tomorrow's energy prices, Real-time price insights, Price indicator (above/below average), 30-day price visualization charts, Compare rates with standard tariff, Push notifications for price changes, iOS home screen widget

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GridCarbon free?

GridCarbon is free to download, with no in-app purchases.

### Is OctoTracker free?

OctoTracker is free to download, with no in-app purchases.

### Do GridCarbon or OctoTracker have ads?

Neither GridCarbon nor OctoTracker shows ads.

### Which is updated more often, GridCarbon or OctoTracker?

GridCarbon ships an update every 4 months, and OctoTracker every 2 months. Most recently, GridCarbon was updated on June 8, 2026 and OctoTracker on June 8, 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.*