Pigge Apps is a one-person hobby project. These are the apps I make, and what each one is for.

GW Companion

An app for owners of Growatt solar inverters. It shows what your system is doing right now - production, household consumption, battery and grid - along with daily and monthly history, alarms and inverter settings you can change from your phone.

Supported inverters: MIN/TLX, SPH, SPA, NEO and NOAH.

It also includes a Home Screen widget, so you can see your current production without opening the app.

Available in Swedish, English, German, Danish and Spanish.

Platform: iPhone - iOS 18.6 or later
Current version: 1.2.0

Platform: Android - Android 13 or later
Best performance: Android 16 or later
Current version: 0.6.54

https://play.google.com/store/apps/details?id=com.danielnilsson.growattwidget

https://apps.apple.com/se/app/growatt-companion/id6761651203

CW Monitor

An app for CheckWatt customers with a home battery. It shows what your battery earns and what your household uses, without having to log into a web portal.

- Revenue from frequency reserves — FCR-D and mFRR — for today, this month and this year
- Spot prices, including what's coming next, plotted alongside your own power and energy charts
- Battery state of charge, charging and discharging
- Household consumption, solar production, grid import and export, and monthly peak power
- Any past day can be browsed from the Data tab, and days you've viewed are kept on the device so they open instantly and work offline
- Export your local archive as JSON or CSV
- Notifications you define yourself — pick a value, a condition and a threshold
- Home Screen and Lock Screen widgets with the values you choose

Available in Swedish, English and Finnish.

Platform: iPhone - iOS 18.6 or later
Current version: 0.9.4

Platform: Android - Android 8.0 or later
Best performance: Android 16 or later
Current version: 0.6.42

https://play.google.com/store/apps/details?id=com.danielnilsson.cwmonitor

https://apps.apple.com/se/app/cw-monitor/id6761080236

Both apps are built in my spare time. If something's missing or broken, post it on the feedback board - I read everything.

https://piggeapps.featurebase.app