GitHub: https://github.com/leekleak/traffic-light

Play: https://play.google.com/store/apps/details?id=com.leekleak.trafficlight

F-Droid: https://f-droid.org/en/packages/com.leekleak.trafficlight/

Traffic Light is an open-source tool for tracking your network usage while ensuring total privacy. Inspired by Internet Speed Meter and GlassWire.

Features

• Data plan tracking (including multiple SIMs)
• Beautiful widgets
• Status bar network indicator
• In-depth historical data tracking
• At a glance usage analytics
• Uses less battery than alternatives
• Fast and modern with a stunning design