# GridCarbon vs Bright

The clearest difference is rating: Bright at 5.0 against GridCarbon's 3.2. GridCarbon's advantage is review sentiment (76% vs 51%) and ratings volume (6 vs 1). 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.

Bright holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: GridCarbon has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 76% of GridCarbon's written reviews are positive against 51% of Bright's, so the app with the better star average is not the one people write more warmly about.

GridCarbon ships an update every 4 months, Bright every 2 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | GridCarbon | Bright |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/gridcarbon/id346832866/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bright/id1369989022/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | **75.7% of reviews** | 50.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 10 MB | 40 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alex Rogers](https://appshunter.io/developer/346832869) | [HILDEBRAND TECHNOLOGY LTD](https://appshunter.io/developer/594186469) |

## 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


### Bright

[App page](https://appshunter.io/ios/app/bright/id1369989022)

Track your electricity and gas usage in real-time from your smart meters. This app helps you manage energy consumption and spend more efficiently, contributing to carbon reduction goals. Requires compatible hardware for full functionality.

**Highlights:** Real-time energy consumption monitoring, Electricity and gas usage tracking, Smart meter data access via DCC or CAD, Clamp-on sensor support for electricity, Energy spend management, Carbon efficiency goals

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Near real-time usage data
- 👍 Free and valuable app
- 💡 API access bonus
- 👍 Simple and accurate updates
- 👍 Good data analytics

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Login issues after updates
- 🐛 Data not loading or syncing
- 🐛 Registration/sign-up problems
- 🐛 Password reset not working

**Reported bugs**

- App crashes
- Data not loading
- Login issues
- Registration errors
- Password reset emails not received

**Requested features**

- Export data (CSV)
- More data analysis
- iOS widget
- Support for dual-rate electricity tariffs (Economy 7)
- Apple Watch version


## Frequently asked questions

### Is GridCarbon free?

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

### Is Bright free?

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

### Which has better reviews, GridCarbon or Bright?

Bright is rated higher. GridCarbon averages 3.2 out of 5 from 6 ratings, while Bright averages 5.0 from 1 ratings.

### Do GridCarbon or Bright have ads?

Neither GridCarbon nor Bright shows ads.

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

GridCarbon ships an update every 4 months, and Bright every 2 months. Most recently, GridCarbon was updated on October 7, 2026 and Bright on October 12, 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.*