Comparison

GreyStone Power vs Cobb EMC

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GreyStone Power

Manage your electricity account with ease. View bills, make payments, and track usage. Report outages and find office locations on the go.

Highlights
  • Account management
  • Bill viewing
  • Payment processing
  • Electricity usage tracking
  • Outage reporting
  • Office location finder
  • Alerts and reminders
Features
Read full description

GreyStone’s mobile app gives you fast, secure account access so you can easily manage your account details, view your bill and account balance, make payments, and view your electricity use. You can also report outages, view our office and payment locations, schedule alerts and reminders, and connect to our social media pages. Nearly everything you can do from our web portal can now be handled instantly whether you’re at home, at work, or on the go.

About

Cobb EMC

Manage your electric account securely, pay bills in real-time, and monitor your energy usage with interactive tools. Stay informed about news, report outages, and access valuable discounts.

Highlights
  • Real-time bill payment
  • View bill history (PDF)
  • Monitor daily energy usage
  • Compare bills and track usage
  • Report power outages
  • View outage information
  • Access local/national discounts
Read full description

Cobb EMC is a mobile app that allows you to easily and securely access your Cobb EMC electric account, pay your bill in real time, monitor daily energy usage and more. Additional Features: Bill & Pay – Quickly view your current account balance and due date, manage recurring payments and modify payment methods. You can also view bill history, including PDF versions of paper bills. My Usage – Find a series of interactive tools and graphs that allow you to look at past and current usage, compare bills, determine average usage, track differences in usage and set a monthly target to help avoid unexpected high utility bills. Contact Us – Contact Cobb EMC by email or phone. You can also submit a message through the app. News – Stay informed about news that may affect your service, energy efficiency, tips and upcoming events. Report an Outage – Report an outage directly to Cobb EMC and see service interruption and outage information. Current Outages – Search for outages by address and see an estimated restoration time. Valuable Discounts – Get access to local and national discounts. It gives our members direct access to hundreds of valuable discounts at local retailers and thousands of deals nationwide, including discounts at more than 60,000 participating pharmacies. Energy Savings – You don’t have to make big changes to save big money. We’ve worked with Touchstone Energy® to provide tools and easy ways to save energy and money that will make an impact on your home energy expenses. Office Location – Displays facility and payment drop box locations on a map interface.

Screenshots

GreyStone Power4 screens
Cobb EMC4 screens

Verdict

The call

The clearest difference is rating: Cobb EMC at 3.1 against GreyStone Power's 2.3. Cobb EMC also leads on update cadence (every 2 months vs every 6 months) and review sentiment (21% vs 12%). GreyStone Power's advantage is iOS requirement (12.0 vs 17.0). On price, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Cobb EMC holds the better App Store score, 3.1 against 2.3. Both are backed by a comparable volume of ratings — 74 and 65 respectively. Written reviews point the same way: 12% of GreyStone Power's written reviews are positive against 21% of Cobb EMC's.

UpkeepUpdate frequency

GreyStone Power ships an update every 6 months, Cobb EMC every 2 months. The most recent releases landed on October 21, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
GreyStone Power versus Cobb EMC: the parameters behind the verdict, then further details
ParameterGreyStone PowerCobb EMC
PriceFreeFree
Rating2.3 (74 ratings)3.1 (65 ratings) — better
Positive reviews11.8% of reviews20.8% of reviews — better
Number of ratings74 — better65
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size174 MB29 MB
Age rating4+17+
DeveloperGreyStone Power Corporation,an electric membership corporationCobb Electric Membership Corporation

Customer experience

GreyStone Power

All ratings59 ratings
Positive32.2%
Neutral3.4%
Negative64.4%
Written reviews34 reviews
Positive11.8%
Neutral2.9%
Negative85.3%

Cobb EMC

All ratings64 ratings
Positive46.9%
Neutral9.4%
Negative43.8%
Written reviews24 reviews
Positive20.8%
Neutral4.2%
Negative75.0%

In-app purchases

None

GreyStone Power

No in-app purchases

None

Cobb EMC

No in-app purchases

Questions

Is GreyStone Power free?
GreyStone Power is free to download, with no in-app purchases.
Is Cobb EMC free?
Cobb EMC is free to download, with no in-app purchases.
Which has better reviews, GreyStone Power or Cobb EMC?
Cobb EMC is rated higher. GreyStone Power averages 2.3 out of 5 from 74 ratings, while Cobb EMC averages 3.1 from 65 ratings.
Do GreyStone Power or Cobb EMC have ads?
Neither GreyStone Power nor Cobb EMC shows ads.
Which is updated more often, GreyStone Power or Cobb EMC?
GreyStone Power ships an update every 6 months, and Cobb EMC every 2 months. Most recently, GreyStone Power was updated on October 21, 2026 and Cobb EMC on October 29, 2026.

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