You can use your exported Crashlytics and (optionally) Firebase sessions data in BigQuery to create custom dashboards.
Visualize exported Crashlytics data with Looker Studio
Looker Studio turns your Crashlytics datasets in BigQuery into reports that are easier to read, easier to share, and fully customizable.
To learn more about using Looker Studio, check out their welcome guide.
Use a Crashlytics report template
Looker Studio has a sample report for Crashlytics that includes a comprehensive set of dimensions and metrics from the exported Crashlytics BigQuery schema. If you've enabled Crashlytics streaming export to BigQuery, then you can view that data on the Realtime trends page of the Looker Studio template. You can use the sample as a template to quickly create new reports and visualizations based on your own app's raw crash data:
Click Use Template in the upper-right corner.
In the New Data Source drop-down, select Create New Data Source.
Click Select on the BigQuery card.
Select a table containing exported Crashlytics data by choosing My Projects > PROJECT_ID > firebase_crashlytics > TABLE_NAME.
Your batch table is always available to select. If Crashlytics streaming export to BigQuery is enabled, then you can select your realtime table instead.
Under Configuration, set Crashlytics Template level to Default.
Click Connect to create the new data source.
Click Add to Report to return to the Crashlytics template.
Finally, click Create Report to create your copy of the Crashlytics Looker Studio Dashboard template.