# Green Mtn vs CSS Mobile

The clearest difference is update cadence: Green Mtn at monthly against CSS Mobile's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Green Mtn ships an update monthly, CSS Mobile every 2 months. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Green Mtn | CSS Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (4.7K ratings)](https://appshunter.io/ios/app/green-mtn/id1464698584/reviews)** | — |
| Number of ratings | **4.7K** | — |
| Positive reviews | 47.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 95 MB | 46 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Green Mountain Energy](https://appshunter.io/developer/1464698583) | [Corrections Software Solutions](https://appshunter.io/developer/1367913431) |

## What reviewers say

### Green Mtn

[App page](https://appshunter.io/ios/app/green-mtn/id1464698584)

Manage your electricity account and track your environmental impact. Get daily green living tips, monitor usage, and earn rewards for sustainable actions. Available for Texas customers.

**Highlights:** Pay bills and view payment history, Manage account services (AutoPay, Average Billing), Transfer electricity service, Access plan details and customer rights, Track electricity usage with interactive graphs, Earn badges for environmental impact, Link electric vehicle for greater impact

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Good service provider
- 💰 Affordable rates
- 🌳 Eco-friendly energy
- 🤝 Excellent customer service

**What reviewers complain about**

- 🐛 Login issues
- 🐛 App crashes/freezes
- 🔒 Security concerns
- 🔍 Lack of features/functionality

**Reported bugs**

- Unable to log in
- App crashes on launch
- Payment methods not saving
- Incorrect account information displayed

**Requested features**

- Add Apple Pay support
- Improve app stability and performance
- Provide more detailed usage and billing information
- Enhance user interface and navigation


### CSS Mobile

[App page](https://appshunter.io/ios/app/css-mobile/id1668134236)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Green Mtn free?

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

### Is CSS Mobile free?

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

### Do Green Mtn or CSS Mobile have ads?

Neither Green Mtn nor CSS Mobile shows ads.

### Which is updated more often, Green Mtn or CSS Mobile?

Green Mtn ships an update monthly, and CSS Mobile every 2 months. Most recently, Green Mtn was updated on October 16, 2026 and CSS Mobile on October 1, 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.*