S vs KSTAR Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S
This app streamlines the installation and monitoring of distributed PV power plants. It offers an easy-to-use interface for setting up monitoring accounts and provides visual guidance for microinverter installation. Access plant-level and module-level power generation data, along with detailed alarm information for diagnostics.
- Easy account monitoring
- Visual installation guide
- Rapid account configuration
- Plant-level data
- Module-level data
- Alarm information
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S-miles Installer is a mobile application developed by Hoymiles especially for installers of distributed PV power plants. It provides an EASY-TO-USE procedure for monitoring accounts and a visual physical layout guide for the installation of microinverters, which helps installers configure monitoring accounts rapidly, and provides installers power generation data on both plant-level & module-level as well as detailed alarm information about the power plant for commissioning & diagnostics.
KSTAR Sync
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Designed for energy system managers, O&M engineers, and power users, our app simplifies the complexities of power station monitoring and maintenance. Stay seamlessly connected to your assets and take full control, no matter where you are. Key Features: Comprehensive Real-Time Monitoring All-in-One Dashboard: Get a complete overview of all critical data, including power generation, energy storage status, charging power, and load consumption in one place. Intuitive Visualizations: Instantly understand energy dynamics and operational efficiency with clear trend graphs and power flow diagrams. Smart Alarm Center: Your First Line of Defense Multi-Level Push Alerts: Receive real-time notifications categorized by severity (Emergency, Major, Minor), ensuring you never miss a critical event. Closed-Loop Management: Track the entire lifecycle of an alarm, from detection to resolution, creating a complete and reliable maintenance archive. Historical Analysis: Easily query past alarm records to analyze system weak points and prevent future incidents. Efficient Remote Operations & Control Remote Start/Stop: Control your power station or specific equipment from anywhere, eliminating the need for on-site visits. Flexible Strategy Switching: Instantly switch between operational strategies like "Self-Consumption" or "Time-of-Use Control" with a single tap to maximize your economic returns.
Screenshots
Verdict
The clearest difference is update cadence: KSTAR Sync at every 2 weeks against S's monthly. On price, ads, in-app purchases and device support 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.
S ships an update monthly, KSTAR Sync every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | S | KSTAR Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (15 ratings) — better | — |
| Positive reviews | 65.5% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 208 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Hoymiles Power Electronics Inc. | Shenzhen Kstar Science & Technology Co., Ltd. |
In-app purchases
S
No in-app purchases
KSTAR Sync
No in-app purchases








