PLEXLOG vs KOSTAL PIKO CI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PLEXLOG
Monitor and manage your photovoltaic systems, storage, and meters easily from your mobile device. Log in with your existing portal credentials to access full functionality on the go.
- PV system monitoring
- Storage management
- Meter management
- Mobile access
- Full portal functionality
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Mit der PLEXLOG-APP überwachen und verwalten Sie Ihre PV-Anlagen, Speicher und Zähler ganz einfach mobil über Ihr Handy oder Tablet. Geben Sie nach der Installation einfach Ihren normalen Portal-Benutzernamen und Passwort ein und Sie bewegen sich mit vollem Funktionsumfang wie gewohnt in Ihrem PLEXLOG-Portal. Viel Spaß!!!
KOSTAL PIKO CI
This app allows for the commissioning and configuration of PIKO CI series inverters. It also provides the ability to view real-time performance data of connected devices and update firmware.
- Commission PIKO CI inverters
- Configure system-specific functions
- View current performance data
- Update inverter firmware
- Manage network and WLAN settings
- Connect Solar Portal
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The KOSTAL PIKO CI app is used to commission the inverters of the PIKO CI series and to configure all necessary, system-specific functions. In addition, you have the option of viewing the current performance data of a connected device. Please note: For configuration, the inverter must be supplied with voltage via the PV side. The DC must be switch on on this purpose! Open the KOSTAL PIKO CI app and connect to the integrated WLAN of this inverter series. To establish the connection (including the default passwords), follow the instructions in the enclosed quick start guide or the instructions from our download area https://www.kostal-solar-electric.com/de-de/download/download . You can then make all the necessary settings such as selecting the country policy, changing the network / RS485 / WLAN settings, Solar Portal connections, changing grid parameters, connecting ripple control receivers and parameterising the master / slave inverters. To prevent unauthorized access to the device, it is recommended to change the default WLAN password of the inverter during commissioning. You can also use the app to update to the latest firmware version.
Screenshots
Verdict
The clearest difference is review sentiment: PLEXLOG at 50% against KOSTAL PIKO CI's 14%. KOSTAL PIKO CI's advantage is iOS requirement (8.0 vs 12.0). On price, update cadence, 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.
PLEXLOG ships an update every 3 months, KOSTAL PIKO CI every 2 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | PLEXLOG | KOSTAL PIKO CI |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews — better | 14.3% of reviews |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 30 MB |
| Age rating | 4+ | 17+ |
| Developer | PLEXLOG GmbH | KOSTAL Solar Electric GmbH |
Customer experience
PLEXLOG
KOSTAL PIKO CI
In-app purchases
PLEXLOG
No in-app purchases
KOSTAL PIKO CI
No in-app purchases
Questions
Is PLEXLOG free?
Is KOSTAL PIKO CI free?
Do PLEXLOG or KOSTAL PIKO CI have ads?
Which is updated more often, PLEXLOG or KOSTAL PIKO CI?
Other comparisons
