Spanprism: Trace Explorer app icon

Developer Tools · iPhone & iPad

Spanprism: Trace Explorer

Inspect OTLP Traces Offline

$2.99iPhone & iPadData Not Collected

Inside the app

A closer look.

Spanprism: Trace Explorer screenshot 1
iPhone 6.7"
Spanprism: Trace Explorer screenshot 2
iPad Pro 12.9" (3rd gen)
Spanprism: Trace Explorer screenshot 3
iPhone 6.7"
Spanprism: Trace Explorer screenshot 4
iPad Pro 12.9" (3rd gen)
Spanprism: Trace Explorer screenshot 5
iPhone 6.7"
Spanprism: Trace Explorer screenshot 6
iPad Pro 12.9" (3rd gen)
Spanprism: Trace Explorer screenshot 7
iPhone 6.7"
Spanprism: Trace Explorer screenshot 8
iPad Pro 12.9" (3rd gen)

About this app

Made for a clear purpose.

Spanprism is an on-device OpenTelemetry trace explorer for developers and SREs who cannot or do not want to send diagnostic traces to a hosted backend.

Turn local OTLP trace JSON evidence into a prioritized, editable review with explicit assumptions, ownership, and exportable decisions.

KEY FEATURES - Native OTLP trace JSON import and normalization - Interactive critical path prism - Editable spans with owners and evidence - Deterministic latency findings scoring - Current-versus-proposed state comparison - Decision log with accountable disposition - Portable trace evidence packet export - Private offline workspace with no account - Native structured-file or CSV import - Local PDF, workspace JSON, and domain-artifact export - 48 original offline technical reference plates - No account, ads, analytics, tracking, IAP, or subscription

Spanprism analyzes imported trace payloads and timestamps. It does not collect live telemetry, account for backend sampling transformations, or prove causality. Confirm clocks, instrumentation, sampling, and service behavior in the source systems.