Built an alternative Growatt monitor for Android — home screen widget shows battery/solar without opening anything

I got fed up with the official Growatt app being slow and ad-heavy, so I built my own.

It's a small app for Growatt solar inverter owners. Here's what it does:

• Real-time dashboard: battery %, solar production (PPV), home load, charge power
• Two home screen widgets — a compact 3×2 bar widget and a 3×3 arc-gauge that shows everything at a glance
• Battery low alert — push notification when battery drops below a threshold you set
• Logs in with your existing Growatt credentials, auto-detects your storage device
• No ads, no analytics, no subscriptions — one internet permission, nothing else

It uses the Growatt OpenAPI directly, so it works with any setup that's accessible there.

Play Store: https://play.google.com/store/apps/details?id=com.chimpanzee.tinygrowattmonitor

Happy to answer questions or take feature requests.