# GridCarbon vs PriFly

The clearest difference is update cadence: PriFly at daily against GridCarbon's every 4 months. GridCarbon's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, 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, PriFly daily. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | GridCarbon | PriFly |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free | — |
| Size | 10 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alex Rogers](https://appshunter.io/developer/346832869) | [Steven Barbour](https://appshunter.io/developer/1892675036) |

## 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


### PriFly

[App page](https://appshunter.io/ios/app/prifly/id6762050891)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GridCarbon free?

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

### Is PriFly free?

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

### Do GridCarbon or PriFly have ads?

Neither GridCarbon nor PriFly shows ads.

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

GridCarbon ships an update every 4 months, and PriFly daily. Most recently, GridCarbon was updated on October 7, 2026 and PriFly on October 4, 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.*