A tool only appears when it has something to show: the Environment tool needs registered launch arguments, and one Preferences / Database tool is added per configured data source.

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Environment & Servers

Edit launch-argument overrides grouped by group. Each row shows the effective value, the underlying key, and an overridden badge when it differs from the compile-time default. A Revert button clears a single override; the app-bar Reset all clears them all. The bottom bar has Apply (runs your onApply hook to reconfigure live) and Restart app. See Environment & Servers for the full guide.

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Shared Preferences

Inspect & search

Lists every (visible) key with its runtime type and value; filter by key.

Edit & add

Type-aware editor for String, bool, int, double, List<String>.

Delete

Per-key delete (with confirmation) and “clear all”.

CARP session data

The CARP user, participant and study are stored here — inspect or wipe them.

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Database

Browse the configured sembast stores, each with a live record count. Open a store to list its records, tap a record to view its full value, and delete individual records or clear a whole store.

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Device & App

Read-only metadata:
  • Application: name, package id, version, build number
  • Device: platform, OS version, model, device name, physical-vs-simulator
  • Display: screen size, pixel ratio, text scale, brightness

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Logs & Errors

A ring buffer that captures debugPrint output, framework errors (FlutterError.onError) and uncaught async errors (PlatformDispatcher.onError) so you can review what happened even after a screen has crashed.
Capture is non-destructive: the previously installed debugPrint / error handlers are always invoked, so console logging and crash reporting keep working. Disable capture with DebugToolkitConfig(captureLogs: false).