---
title: Browse by Feature Flags
---

# Browse by Feature Flags

The **Browse by Feature Flags** view provides a purpose-built interface for understanding the
relationship between feature flags and app issues. It surfaces every feature flag observed across
your app, along with the number of variants, total errors seen, and errors exclusive to each flag.

## Feature Flag List

The top-level view lists all feature flags with the following columns:

* **Feature Flag** — the flag name
* **Variants** — number of distinct variant values observed
* **Errors Seen** — total issue events occurrences where the flag was active
* **Exclusive Errors** — issue events seen *only* in groups where this flag was active

Use the search bar to filter by flag **Name** or **Variant** value.

## Flag Detail and Crash Differential

Clicking a feature flag opens a detail view with:

* Summary cards showing total issues seen, issues exclusive to this flag, and a breakdown by variant
  (including per-variant issue counts and exclusive counts).
* A **Crash Differential** comparison that lets you select any two variants (e.g. "control" vs "treatment") and
  see crash reasons ranked by the magnitude of difference between them. This view is available as
  both a bar chart and a table with per-crash-reason counts for each variant and the computed diff. Clicking into
  any item takes you to the issue details.

The crash differential makes it straightforward to identify which crashes were introduced or
amplified by enabling a flag.

![Browse by Feature Flags — Flag Detail and Crash Differential](../../assets/images/issues_browse_feature_flags@2x.webp "Browse by Feature Flags — Flag Detail and Crash Differential"){ srcset="../../assets/images/issues_browse_feature_flags.webp 1x, ../../assets/images/issues_browse_feature_flags@2x.webp 2x" }

## Drilling into Issue Groups

From the flag detail view, you can drill into a filtered **Issue Groups** list for a specific
variant. For example, selecting the "treatment" variant and "Exclusive Issues Seen" opens the standard
Issues list filtered to show only crashes unique to that variant.