Sunline Energy vs Keystone Connection
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sunline Energy
Connect directly with Sunline Energy for seamless communication and purchasing. Receive updates via push notifications and in-app messages to enhance your buying experience. Share your feedback through reviews after your purchase.
- Direct communication with Sunline Energy
- User registration
- Push notifications
- In-app messaging
- Product purchasing
- Write reviews
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Sunline Energy is a free app available for anyone to download and is used for those that want to communicate with Sunline Energy. It is as simple as downloading the App and register as a user. Once registered, you can begin communicating right away. We will reach out to you via push notifications and in-app messaging to improve your overall buying experience. Once you purchase your new Product from Sunline Energy, feel free to write a review. We appreciate your business.
Keystone Connection
This app facilitates community living for residents and board members of properties managed by Keystone. It allows users to pay balances, reserve amenities, access documents, and receive announcements, all from a single platform.
- Online balance payments
- Amenity reservations
- Access to important documents
- Community announcements
- Direct management team contact
- Seamless living experience
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Welcome to the Keystone Connect app, your all-in-one digital companion for effortless community living. Designed for homeowners, residents, and board members of properties managed by Keystone this app keeps you connected, informed, and in control, anytime, anywhere. With Keystone you can pay your balance online, reserve amenities, access important documents, stay updated with community announcements, and connect easily with your management team, and much more, all in one convenient place. Whether you’re at home or on the go, the Keystone app brings your community to your fingertips, making it easier than ever to manage your home, stay engaged, and enjoy a seamless living experience. Download now and experience a new way to live connected app, your all-in-one digital companion for effortless community living.
Screenshots
Verdict
The clearest difference is rating: Sunline Energy at 3.1 against Keystone Connection's 1.3. Sunline Energy also leads on update cadence (every 6 days vs every 6 weeks) and iOS requirement (13.0 vs 16.0). Keystone Connection's advantage is ratings volume (58 vs 8). On price, review sentiment, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sunline Energy holds the better App Store score, 3.1 against 1.3. That said, the two scores are not equally well evidenced: Keystone Connection has 58 ratings behind it against 8, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.
Sunline Energy ships an update every 6 days, Keystone Connection every 6 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | Sunline Energy | Keystone Connection |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (8 ratings) — better | 1.3 (58 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 8 | 58 — better |
| Update frequency | Every 6 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 29 MB | 109 MB |
| Age rating | 4+ | 4+ |
| Developer | SUNLINE ENERGY INC | CINC Systems |
Customer experience
Sunline Energy
Keystone Connection
In-app purchases
Sunline Energy
No in-app purchases
Keystone Connection
No in-app purchases
Questions
Is Sunline Energy free?
Is Keystone Connection free?
Which has better reviews, Sunline Energy or Keystone Connection?
Do Sunline Energy or Keystone Connection have ads?
Which is updated more often, Sunline Energy or Keystone Connection?
Other comparisons
