crash-analytics — independently scanned and version-tracked by SaferSkills.
SaferSkills independently audited crash-analytics (Agent Skill) and scored it 45/100 (orange). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 1 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 1 flagged
A base64 string of 128+ characters appears in a documentation file. Encoded prompt injection hides the hostile instruction in base64 — invisible to keyword filters — and relies on the agent's ability to decode it at runtime. There is no normal authoring reason to embed a multi-hundred-byte base64 blob in skill docs.
*.sig, SIGNATURES) outside the documentation.Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
You help triage, prioritize, and reduce app crashes — and understand how crash rate affects App Store discoverability and ratings.
Target: crash-free sessions > 99.5% | crash-free users > 99%
| Tool | What it provides | Setup |
|---|---|---|
| Firebase Crashlytics | Real-time crashes, ANRs, symbolicated stack traces | Add FirebaseCrashlytics pod/SPM package |
| App Store Connect | Crash rate trend, crashes per session | Built-in, no code needed |
| Xcode Organizer | Aggregated crash logs from TestFlight + App Store | Xcode → Window → Organizer → Crashes |
| MetricKit | On-device diagnostics, hang rate, launch time | iOS 13+, automatic |
Recommended: Crashlytics (real-time alerts + search) + App Store Connect (trend validation)
// AppDelegate or @main App struct
import FirebaseCore
import FirebaseCrashlytics
@main
struct MyApp: App {
init() {
FirebaseApp.configure()
// Crashlytics is auto-initialized
}
}// Log a non-fatal error
Crashlytics.crashlytics().record(error: error)
// Log a custom key for debugging context
Crashlytics.crashlytics().setCustomValue(userId, forKey: "user_id")
Crashlytics.crashlytics().setCustomValue(screenName, forKey: "current_screen")// build.gradle (app)
implementation("com.google.firebase:firebase-crashlytics:18.x.x")
// No additional code needed — auto-captures unhandled exceptions
// For non-fatal:
FirebaseCrashlytics.getInstance().recordException(throwable)Not all crashes are equal. Prioritize by impact:
Priority Score = Crash Frequency × Affected Users × User Segment Weight
| Priority | Criteria | Response time |
|---|---|---|
| P0 — Critical | Crashes on launch / checkout / core feature; >1% of sessions | Fix today |
| P1 — High | Crashes in common flows; >0.1% of sessions | Fix this release |
| P2 — Medium | Edge case crashes; <0.1% of sessions | Fix next release |
| P3 — Low | Rare, non-blocking crashes; <0.01% of sessions | Backlog |
onboarding, checkout, core feature, background, launchFatal Exception: com.example.NullPointerException
at com.example.UserProfileVC.loadData:87
at com.example.HomeVC.viewDidLoad:45
Keys:
user_id: 12345
current_screen: "home"
app_version: "2.3.1"
os_version: "iOS 17.3"Steps to debug:
UserProfileVC.swift:87)Crashlytics auto-symbolicates if you upload dSYMs. If you see unsymbolicated traces:
# Manually upload dSYMs
./Pods/FirebaseCrashlytics/upload-symbols -gsp GoogleService-Info.plist -p ios MyApp.app.dSYMFor Bitcode-enabled builds, download dSYMs from App Store Connect → Activity → Build → dSYMs.
Crash rate formula: Crashes / Sessions × 100
Use phased releases to catch crashes before full rollout:
iOS: App Store Connect → Version → Phased Release (7-day rollout: 1% → 2% → 5% → 10% → 20% → 50% → 100%)
Android: Play Console → Production → Managed publishing → Rollout percentage
Rule: Monitor Crashlytics for 24 hours at each phase. If crash rate increases >0.2%, pause rollout.
rating-prompt-strategy to recover ratingStability Report — [App Name] v[version] ([period])
Crash-free sessions: [X]% (target: >99.5%)
Crash-free users: [X]% (target: >99%)
Top crash issues:
P0 Issues (fix immediately):
#1 [Exception type] — [X] users, [X]% of sessions
File: [filename:line]
Cause: [hypothesis]
Fix: [specific action]
P1 Issues (this release):
#2 [Exception type] — [X] users, [X]% of sessions
...
Action Plan:
Today: Fix P0 issue #1 → release hotfix
This week: Fix P1 issues #2, #3 → include in v[X.X]
Monitoring: Set velocity alert at 0.5% session thresholdapp-analytics — Full analytics stack; Crashlytics is one piecerating-prompt-strategy — Recover rating after fixing crash-driven 1-starsreview-management — Respond to crash-related reviewsretention-optimization — Crashes on Day 1 destroy retention metricsapp-store-featured — Crash rate > 2% disqualifies editorial featuring~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.