Comparison

KOSTAL Solar App vs FENECON

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KOSTAL Solar App

Monitor your photovoltaic system remotely with this free app. View generation and consumption data, access historical information, and utilize a virtual battery feature for forecasting. Requires access to the KOSTAL solar portal and an inverter.

Highlights
  • Remote photovoltaic system monitoring
  • View generation and consumption data
  • Access historical system data
  • 3-day generation and consumption forecast
  • Virtual battery simulation
  • Graphical data display
Features
Read full description

Professional monitoring for your photovoltaic system. Important: The KOSTAL Solar App now obtains data from the new KOSTAL Solar portal. Data and information from the PIKO Solar Portal are no longer displayed in the app. To enable you to use the KOSTAL Solar App with your existing solar portal account, KOSTAL will send you a welcome e-mail in the the next few days, asking you to re-enter your password. If you do not want to wait for the welcome e-mail, you can use the "Reset password" function on the KOSTAL Solar Portal website for your existing account. KOSTAL Solar App The free KOSTAL Solar App offers professional monitoring of your photovoltaic system. You can conveniently and easily retrieve all functions from your smartphone or tablet at any time. To set up and use the app, you need access to the KOSTAL solar portal and an inverter installed there. For the login of the app the same access data as for the solar portal are needed. General information With the KOSTAL Solar App, you can now conveniently monitor your solar systems while you are on the move or from your couch, and display relevant system data. You have the opportunity to access the consumption and generation data over different periods such as day, week, month and year, as well as access to the historical data of your plant. With this app, you are always up to date. Download the free KOSTAL Solar App now and take advantage of the new and enhanced features. Start page On the start page, the current home consumption is shown graphically as well as percentage. You can immediately see from the diagram how your own home consumption is covered by PV, a battery or the public grid. A new feature shows you a 3-day forecast for generation and home consumption. With a simple swipe action with your finger to "right" or "left" on the individual tiles, you can view more areas. By clicking on the drop-down arrows, you can display extended dates or periods. Last data Under the "Last Data" the last live values of the last transfer to your installation are displayed to the KOSTAL Solar Portal. The new diagram shows the home consumption [W], the feed in [W], the generation [W], as well as values relating to a battery. If you do not have a own battery yet, you can use the KOSTAL Solar App to activate a virtual battery and see the resulting savings. Try it for yourself and see what the Virtual Battery calculates. History Under "History" you can graphically display the historical data of your plant. Here you can switch between the daily, monthly, annual and total values of domestic consumption and production. You can switch these views of house consumption and generation again with a "swipe action". The highlight of the KOSTAL Solar App is the virtual battery, in which you can select a desired capacity and calculate an individual forecast. In the lower area you will see an overview of your respective values (home consumption / production). The data from the last available periods are compared in weekly, monthly or annual sections. Thus, you can immediately see if your income has increased or decreased compared to previous years.

About

FENECON

Manage your home, commercial, or industrial energy storage systems. Visualize real-time energy flows, analyze historical data, and configure advanced features like emergency power, EV charging, and dynamic electricity tariffs.

Highlights
  • Real-time electricity flow visualization
  • Historical energy flow analysis
  • Emergency power provisioning
  • EV charging control
  • Heat pump operation modes
  • Dynamic electricity tariff utilization
Features
Read full description

Die App für Stromspeicher von FENECON – egal ob Eigenheim-, Gewerbe oder Industriesystem. Das innovative FENECON Energiemanagementsystem (FEMS) integriert neben Ihrem Stromspeicher auch Photovoltaikerzeugung, E-Auto-Ladesäulen, Wärmepumpe, Heizstab, Dynamischen Stromtarife und vieles mehr.  In der App finden Sie sämtliche Funktionen auf einen Blick:  - Visualisieren Sie in Echtzeit detailliert die Stromflüsse Ihrer Anlage  - Analysieren Sie historische Energieflüsse in Tagen, Wochen, Monaten und Jahren  - Parametrieren Sie Zusatzfunktionen, wie z. B.  - Notstromvorhaltung der Batterie  - Überschuss- oder Schnellbeladung Ihres E-Autos  - Betriebsmodus Ihrer Wärmepumpe  - Nutzung eines dynamischen Stromtarifs zur Beladung der Batterie  - und vieles mehr  FENECON begleitet Sie auf Ihrer Energy Journey – hin zur 100 % energiegewendeten Welt, in der alle Sektoren vollständig durch Erneuerbare Energien versorgt werden. Die FENECON Stromspeichersysteme für Eigenheime, Gewerbe und Industrie für alle Größen- und Leistungsklassen sowie unser Energiemanagementsystem FEMS sind die Grundlage dafür. Wir wollen gemeinsam mit Ihnen zu einer Zukunft beitragen, in der klimafreundliche, preisgünstige Energie aus Wind und Sonne allen zugänglich ist.

Screenshots

KOSTAL Solar App4 screens
FENECON4 screens

Verdict

The call

The clearest difference is review sentiment: KOSTAL Solar App at 56% against FENECON's 0%. KOSTAL Solar App also leads on rating (2.0 vs 1.0) and ratings volume (6 vs 1). FENECON's advantage is update cadence (every 9 days vs every 3 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

KOSTAL Solar App holds the better App Store score, 2.0 against 1.0. That said, the two scores are not equally well evidenced: KOSTAL Solar App has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 56% of KOSTAL Solar App's written reviews are positive against 0% of FENECON's.

UpkeepUpdate frequency

KOSTAL Solar App ships an update every 3 weeks, FENECON every 9 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
KOSTAL Solar App versus FENECON: the parameters behind the verdict, then further details
ParameterKOSTAL Solar AppFENECON
PriceFreeFree
Rating2.0 (6 ratings) — better1.0 (1 ratings)
Positive reviews56.4% of reviews — better0.0% of reviews
Number of ratings6 — better1
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.5 — better26.0
Further details — not scored
Size68 MB35 MB
Age rating4+4+
DeveloperKOSTAL Solar Electric GmbHFENECON GmbH

Customer experience

KOSTAL Solar App

All ratings6 ratings
Positive16.7%
Neutral16.7%
Negative66.7%
Written reviews55 reviews
Positive56.4%
Neutral18.2%
Negative25.5%

FENECON

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

KOSTAL Solar App

No in-app purchases

None

FENECON

No in-app purchases

Questions

Is KOSTAL Solar App free?
KOSTAL Solar App is free to download, with no in-app purchases.
Is FENECON free?
FENECON is free to download, with no in-app purchases.
Which has better reviews, KOSTAL Solar App or FENECON?
KOSTAL Solar App is rated higher. KOSTAL Solar App averages 2.0 out of 5 from 6 ratings, while FENECON averages 1.0 from 1 ratings.
Do KOSTAL Solar App or FENECON have ads?
Neither KOSTAL Solar App nor FENECON shows ads.
Which is updated more often, KOSTAL Solar App or FENECON?
KOSTAL Solar App ships an update every 3 weeks, and FENECON every 9 days. Most recently, KOSTAL Solar App was updated on October 26, 2026 and FENECON on October 24, 2026.

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