ALDLdroid

ALDLdroid gives you access to deep engine parameters like Block Learn, Integrator, desired idle speed, and specific sensor voltages from older GM computers. This goes far beyond basic OBD2 data, letting you monitor the exact values needed for tuning and diagnostics.

Yes, you can place gauges anywhere on the dashboard, but resizing them can be finicky and the color options feel dated. It's a powerful customization tool that works well once you get used to the clunky interface.

This lag is most noticeable when you switch between custom dashboards while data logging is active, even on modern phones like the S23. To avoid it, try stopping the data log before switching dashboards, or close and reopen the app if the stutter persists.

If the in-app graphing crashes, try exporting your data log as a CSV file and graphing it on a PC instead. This workaround is reliable and often gives you better analysis tools than the app's built-in graphing.

ALDLdroid is specifically designed to work with older GM ALDL ports, unlike generic apps that only read standard OBD2. If you're working on a pre-1996 GM vehicle, ALDLdroid is the better choice because it talks directly to the factory computer and gives you real diagnostic data, not just basic codes.