⚡BETA COMING SOON

Your Balcony Solar Panel.
Always in Sight.

VoltBuddy shows you live watts, daily savings in euros, and your ROI progress – right on your home screen. Free, in your language, no cloud required.

100%
Made in Germany
Free
Basic version
Local
No cloud required
⚡ Join the WaitlistLearn more ↓

iOS version coming after launch

VoltBuddy App Dashboard

Works with

ShellyTP-Link TapoAPsystemsEcoFlowOpenDTUAhoyDTU
HOME SCREEN WIDGET

Always visible. Without opening the app.

The VoltBuddy widget shows you live power, daily savings, and CO₂ directly on your home screen.

Small Widget

Small Widget

Live watts at a glance

FREE
Large Widget

Large Widget

Live, Peak, Savings & CO₂

FREE
FEATURES

Everything you need.

From live data to community rankings – VoltBuddy grows with your needs.

⚡

Live Watts in Real Time

FREE

See your current output to the second – directly from your Wi-Fi plug.

💶

Savings in Euros

FREE

No more kWh calculator. VoltBuddy converts everything to euros automatically.

📱

Home Screen Widget

FREE

Live watts, savings, and CO₂ always visible – right on your home screen.

🌿

CO₂ Savings

PLUS

Your personal environmental impact in kg – including comparisons (e.g. washing cycles saved).

📊

Weekly & Monthly View

PLUS

Bar charts for 7 days, months, and the full year.

🔔

Push Notifications

PLUS

Alerts for outages, new daily records, or when your weekly goal is almost reached.

🏠

Home Assistant

PRO

Full integration for your smart home setup.

🤖

AI Anomaly Detection

PRO

VoltBuddy automatically detects when your system is underperforming.

🏆

Community Challenge

PRO

Compete against other balcony solar owners and plant real trees together.

VoltBuddy App Screenshots
PRICING

Transparent. Fair. Flexible.

No hidden subscriptions, no dark patterns. Cancel anytime.

FREE

€0/month

Forever free

  • ✓Live watt display
  • ✓Daily savings in euros
  • ✓ROI progress
  • ✓Streak
  • ✓6 Achievements
  • ✓Total kWh since installation
  • ✓Home screen widget
Join Waitlist →
MOST POPULAR

PLUS

€2.39/month

For one installation

  • ✓Weekly / Monthly / Yearly view
  • ✓CO₂ savings
  • ✓Full history
  • ✓APsystems, EcoFlow, OpenDTU, Tuya
  • ✓Push notifications
  • ✓Year in Review
  • ✓Weekly challenge
  • ✓Monthly PDF report
Join Waitlist →
7 DAYS FREE TRIAL

PRO

€4.79/month

Auto-renews after trial

  • ✓Up to 5 installations
  • ✓Home Assistant integration
  • ✓AI anomaly detection
  • ✓Tibber / Dynamic electricity tariff
  • ✓Community challenge with ranking
  • ✓Anonymous percentile ranking
  • ✓Annual PDF report
  • ✓Priority support
  • ✓7-day trial included
Join Waitlist →
FAQ

Frequently Asked Questions

⚡

Start for free today.

Connect your installation in 3 minutes and see your first euro in savings live.

⚡ Join the Waitlist

Free · Beta invitation by email · Android

VoltBuddy – Your Balcony Solar System. Always in Sight.