Chargee Sparky vs Wilms
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chargee Sparky
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With the Sparky P1 meter and the Chargee app, you can take energy back into your own hands. We combine real-time insight with forecasts and automation so that you use energy at the ideal time. In this way, we bring energy supply and demand back into balance. Together, we make optimal use of sustainable energy. APP FEATURES Insight • Live insight into electricity and gas consumption and feed-in • Compare your historical consumption per day, week, month or year • Easy insight into your average, most and least consumption • Insight into your power consumption and feed-in every hour, down to the second • View the dynamic rates for electricity and gas • Easily share your Chargee account with friends and family • View the load per phase (ampere) in your home, per hour • View the voltage per phase in your home, per hour • Live phase load Forecast • Forecast of your expected electricity consumption and solar return • Forecast of your expected gas consumption • Forecast of your expected solar production Integrations • Connect to your solar inverter and see your solar consumption in your home (Beta) • Connect with your electric car and see the charge state and driving range (Beta) • Connect with your EV charger and see the charging capacity (Beta) • Connect with your heat pump, air conditioning or heating and see consumption rate and temperature (Beta) • Connect with your home battery and see charge state and battery level (Beta) You need Sparky P1 meter, our real-time energy meter, to use the Chargee app. You can easily connect this Sparky to your smart meter. Click, connect to WiFi and you're done.
Wilms
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With My Wilms, you can control all your Wilms ventilation systems in one place. - Permanently monitor the quality of your air: My Wilms provides a real-time overview of the various sensors, such as humidity, CO2, temperature, and flow rate of the Wilms ventilation system. - Smart or manual, you're in control: with My Wilms, you can choose to have the Wilms ventilation controlled by the built-in sensors (smart) or by manual control (low, medium, high). Ideal for quickly ventilating a room or saving energy when you're not there. - Never miss a notification: thanks to automatic push notifications, My Wilms alerts you in the event of malfunctions in the Wilms ventilation system or when the filters need to be replaced. This ensures that your Wilms ventilation system continues to operate optimally. This app is compatible with the following Wilms ventilation systems: - WVS-0700 (cavity wall ventilation)
Screenshots
Verdict
The clearest difference is device support: Chargee Sparky at 3 against Wilms's 1. 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.
Chargee Sparky ships an update fortnightly, Wilms every 2 weeks. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.
| Parameter | Chargee Sparky | Wilms |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 158 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Chargee B.V. | Wilms |
In-app purchases
Chargee Sparky
No in-app purchases
Wilms
No in-app purchases
Questions
Is Chargee Sparky free?
Is Wilms free?
Do Chargee Sparky or Wilms have ads?
Which is updated more often, Chargee Sparky or Wilms?
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