Diagnostics

What Xcode's Organizer shows, from users' devices that share analytics with developers: a build's top hangs, slow launches and disk writes with their call stacks, and the app's performance and power metrics across versions. Without --build, the build of the version on the App Store.

Signatures

ascelerate diagnostics <bundle-id>
ascelerate diagnostics <bundle-id> --type hangs --build 2041

The build's hang, launch and disk-write signatures, heaviest first within each type, with their weight and trend against earlier versions. --type takes hangs, launches or disk-writes (comma-separated for several).

Logs

ascelerate diagnostics logs <signature-id>
ascelerate diagnostics logs <signature-id> --frames 0

Each sampled event with its device, OS and app version, then its call stacks; the frame App Store Connect blames is marked with ▶. --frames limits the frames per call stack (40 by default, 0 for all).

Metrics

ascelerate diagnostics metrics <bundle-id>
ascelerate diagnostics metrics <bundle-id> --type launch,hang --all

Each metric (launch time, hang rate, peak memory, disk writes, battery, terminations, animation, storage) per app version, for all devices at the typical (50th) and 90th percentiles; --all adds each device model. Apple's regressions and upward trends come first. --build shows one build's metrics.

All three take --json.