KOSTAL Solar App

Name: KOSTAL Solar App
Rating: 2.9166667 (3934 reviews)
Author: KOSTAL Solar Electric GmbH

By: KOSTAL Solar Electric GmbH

Professional monitoring for your photovoltaic system.

Features & Capabilities

The KOSTAL Solar App provides professional, real-time monitoring of your photovoltaic system directly from your smartphone or tablet. Designed for users with access to the KOSTAL solar portal and compatible inverters, the app offers an intuitive interface to track your system's performance wherever you are.

Features include graphical displays of home consumption, feed-in, and generation data, with detailed views over daily, weekly, monthly, or yearly periods. The app introduces a unique virtual battery tool that forecasts potential savings by simulating various battery capacities. Users can easily manage multiple plants, customize which systems to display, and share production statistics with friends and family. Stay informed with live updates, consumption forecasts, and historical data — bringing your solar energy insights right to your fingertips.

User Growth & Download Statistics

App Energy

By:

KOSTAL Solar Electric GmbH

Downloads:

301,933 502

Rating:

2.92

(3,934) 1 new ratings

Version:

1.4.362 Last updated: 2026-05-07

Version code:

1004362

Creation date:

2019-03-15

Publisher country:

Permissions:

android.permission.ACCESS_COARSE_LOCATION Very high risk
android.permission.ACCESS_FINE_LOCATION Very high risk
android.permission.CAMERA Very high risk
android.permission.READ_EXTERNAL_STORAGE High risk
android.permission.WRITE_EXTERNAL_STORAGE High risk
android.permission.NEARBY_WIFI_DEVICES Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_WIFI_STATE Low risk
android.permission.CHANGE_NETWORK_STATE Low risk

Size:

25.03MB

Email:

se*****@kostal.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-21

Compare stats and ranking:

Ranking

# 126,048 ▼ 119

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

KOSTAL Solar Electric GmbH

Google Play Store

https://play.google.com/store/apps/details?id=com.kostal.solarapp.android

Email:

se*****@kostal.com

Website:

http://www.kostal-solar-electric.com

User Reviews

Users report that the KOSTAL Solar App struggles with frequent crashes, login problems, and missing or inaccurate data, especially around battery usage and inverter details. Although some bugs have been fixed and the app provides useful charts, repeated forced updates cause issues like upgrade loops. The user interface is also criticized for poor design and confusing displays. Overall, the app is considered unreliable and less functional than competitor solar monitoring apps, frustrating users who rely on it to track their solar energy usage and system status.

Pros

The app has a good layout and provides nice charts for solar generation, usage, and feed-in data.
Some longstanding bugs have been fixed, improving data accuracy such as historical data.
When working properly, the app offers basic functionality to monitor the solar system.

Cons

Frequent app crashes, freezes, and login issues make it unreliable and hard to use.
Important data points like battery supply and live inverter/string details are missing or incorrect.
Poor user interface design with confusing elements and poor visibility (e.g., green background with small white text).
Forced upgrades often cause an upgrade loop or app becomes unusable after updates.
Battery and history graphs have issues with time zone sync and orientation problems, reducing usability.

Recent reviews

The history data in the app is incorrect! I reported details to their support email several times and never got a response. After lots of service interruptions and confusing information in the last half year, I would strongly recommend a different manufacturer.

Pe*****, 2024-04-30

Update 4/5/24: some longstanding bugs were FINALLY fixed. This app continues to baffle in terms of the bugs that remain. Currently, the statistics on the history page show power pulled from the grid and power supplied directly by the solar panels. But they don't show power supplied by the battery storage - it's always 0%, when clearly the battery supplies power when the draw exceeds the pv panel output. And so, the optimum usage of the system is impossible to ascertain. PLEASE fix this!