Green Mtn vs Monster Pay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green Mtn
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.
- 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
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Available to Texas customers only. Stay connected to your green lifestyle where you are with the Green Mountain Energy App. With daily green living tips and a host of tools to manage your impact, we make it effortless to live cleaner and greener everyday. * Pay your bill, check your balance, and review billing and payment history. * Manage account services like AutoPay, Average Billing, and Tree Free billing. * Transfer your electricity service to a new address. * Access important plan details like your Electricity Facts Label, Terms of Service and your Rights as a Customer. * Track your usage with interactive, customizable graphs that show trends, projected electricity costs and weather impacts in your area. * Get green add-ons like Green Mountain Driver and support sustainability projects through Green Mountain Energy Sun Club. * Earn badges for helping the planet by greening up your life. * See the differences you’re making by tracking your personal impact for preventing carbon emissions. The longer you stay on your plan, the bigger your impact gets. * Link your electric vehicle to make an even bigger impact.
Monster Pay
Manage your laundry with this mobile payment solution. Purchase credits directly within the app to operate washing machines and dryers. View transaction history and machine availability in participating locations.
- In-app credit purchase
- QR code machine scanning
- View account balance
- Transaction history
- Machine availability view
- Laundry cycle completion alerts
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Monster Pay is an iPhone application providing the easiest and smartest complete laundry solution. This app allows you to pay for laundry cycles from your account to communicate with the washer or dryer. Simply use Monster Pay to purchase credit right from the app, then use that credit for your laundry. A full accounting is available to see your transaction purchase history. • Scan the QR code of your laundry room (one time process) • Start laundry machines by scanning QR code on the machine • Check your card/account balance, and add value to your account for laundry. For participating laundry rooms, you can view machine availability as well as receive alerts when your laundry cycle is complete.
Screenshots
Verdict
The clearest difference is rating: Green Mtn at 4.9 against Monster Pay's 1.7. Green Mtn also leads on update cadence (monthly vs every 16 months) and review sentiment (47% vs 20%). Monster Pay's advantage is iOS requirement (10.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Green Mtn holds the better App Store score, 4.9 against 1.7. That said, the two scores are not equally well evidenced: Green Mtn has 4.7K ratings behind it against 29, so its average is the more settled of the two. Written reviews point the same way: 47% of Green Mtn's written reviews are positive against 20% of Monster Pay's.
Green Mtn ships an update monthly, Monster Pay every 16 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Green Mtn | Monster Pay |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (4.7K ratings) — better | 1.7 (29 ratings) |
| Positive reviews | 47.1% of reviews — better | 20.0% of reviews |
| Number of ratings | 4.7K — better | 29 |
| Update frequency | Monthly — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 95 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Green Mountain Energy | KioSoft Technologies LLC |
Customer experience
Green Mtn
Monster Pay
Bugs and requests
Green Mtn
Reported bugs
4 issues- Unable to log in
- App crashes on launch
- Payment methods not saving
- Incorrect account information displayed
Requested features
4 requests- Add Apple Pay support
- Improve app stability and performance
- Provide more detailed usage and billing information
- Enhance user interface and navigation
Monster Pay
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Green Mtn
No in-app purchases
Monster Pay
No in-app purchases
Questions
Is Green Mtn free?
Is Monster Pay free?
Which has better reviews, Green Mtn or Monster Pay?
Do Green Mtn or Monster Pay have ads?
Which is updated more often, Green Mtn or Monster Pay?
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