KL Serials vs Solar App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KL Serials
This utility app measures various electrical parameters like voltage, current, and power. It also offers multiple protection functions, including over-voltage, over-current, and over-temperature alerts, while monitoring battery capacity in real-time.
- Measures voltage, current, power, and capacity
- Monitors watt-hours and time
- Over-voltage protection
- Over-current protection
- Over-temperature protection
- Real-time battery capacity monitoring
- Automatic current direction identification
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The KL-F series volt-ampere meter is a new type of coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hours, and time. At the same time, it can also set parameters to achieve over-voltage protection, under-voltage protection, Multiple protection functions such as over current protection, over power protection, and over temperature protection. The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time.
Solar App
Connect and manage your solar energy system components, including controllers, inverters, and lithium batteries. Monitor your system's performance and ensure optimal energy generation.
- Connects solar controllers
- Connects inverters
- Connects lithium batteries
- Device management
- System monitoring
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This is an APP that can connect solar controller, inverter, lithium battery and other devices
Screenshots
Verdict
The clearest difference is rating: KL Serials at 4.5 against Solar App's 3.1. KL Serials also leads on iOS requirement (9.0 vs 12.0). Solar App's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (14 vs 2). 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.
KL Serials holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: Solar App has 14 ratings behind it against 2, so its average is the more settled of the two.
KL Serials ships an update every 3 months, Solar App every 3 weeks. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.
| Parameter | KL Serials | Solar App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 3.1 (14 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 | 14 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 29 MB | 90 MB |
| Age rating | 4+ | 17+ |
| Developer | Hangzhou Junce Instruments Co., Ltd. | 疆 郭 |
Customer experience
KL Serials
Solar App
In-app purchases
KL Serials
No in-app purchases
Solar App
No in-app purchases
