# GridCarbon vs Gridwatch

The clearest difference is review sentiment: GridCarbon at 76% against Gridwatch's 67%. GridCarbon also leads on iOS requirement (12.0 vs 15.6). Gridwatch's advantage is device support (5 vs 3). On price, update cadence, 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, Gridwatch every 3 months. The most recent releases landed on June 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | GridCarbon | Gridwatch |
| --- | --- | --- |
| 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** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 10 MB | 8 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Alex Rogers](https://appshunter.io/developer/346832869) | [Carl de Wiele](https://appshunter.io/developer/1463272988) |

## 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


### Gridwatch

[App page](https://appshunter.io/ios/app/gridwatch/id1553702520)

Monitor real-time energy demand and electricity supply sources for the UK. Track current and past consumption levels to understand grid performance.

**Highlights:** Live UK energy demand metrics, Electricity supply source breakdown, Current consumption levels, Historical consumption data, Grid performance insights

**In-app purchases:** none


## Frequently asked questions

### Is GridCarbon free?

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

### Is Gridwatch free?

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

### Do GridCarbon or Gridwatch have ads?

Neither GridCarbon nor Gridwatch shows ads.

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

GridCarbon ships an update every 4 months, and Gridwatch every 3 months. Most recently, GridCarbon was updated on June 8, 2026 and Gridwatch on September 13, 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.*