Firebase Crashlytics vs Codeskop: use them together on Android and Flutter

Verdict: if you only need crash reports for Android, iOS or Flutter, Firebase Crashlytics is hard to beat. It's free with no event limit, mature, and deobfuscates R8 traces for you. Codeskop is worth adding when you also need to see failed and slow API calls, ANRs on Android 7–10 as well as 11+, JavaScript errors from your web app, and alerts in WhatsApp, Slack or email, all in one place. The two run side by side without conflict, so most teams don't have to choose: keep Crashlytics as your crash baseline and add Codeskop for the parts it doesn't cover.

Below: a feature table, dated pricing, where Crashlytics is better, a working use-both setup for Android and Flutter, and migration notes. For background, see our guides to Android ANRs, Flutter error handling and OkHttp network monitoring, or compare costs across tools in affordable crash reporting tools.

Feature comparison#

Pricing (as of October 2026)#

Firebase Crashlytics is listed as "No-cost" on both the Spark (free) and Blaze (pay-as-you-go) plans, with no event cap shown. Performance Monitoring is also no-cost. Other Firebase products you use alongside can cost money on Blaze.

Codeskop (pricing, USD, checked against our live plans API on 8 October 2026):

Paid plans are billed in USD by card. In Kenya, you can pay with M-Pesa GlobalPay, which gives every M-Pesa user a virtual Visa card linked to their wallet, so you don't need a bank-issued card. Test-key traffic is never counted.

Cost reality: for crashes alone, Crashlytics is cheaper: it's free. Codeskop's Free plan covers crashes up to 10,000 events a month, but the features that set it apart from Crashlytics (ANR detection, network capture and alerts) start at Starter, $49/month.

Where Crashlytics is better#

We'd rather you hear this from us:

• Price. No-cost, with no event cap shown on the pricing page. Nothing else here matches that for crash volume.
• Readable release stack traces. Crashlytics uses your build's mapping information to show deobfuscated traces. In Codeskop 0.3.0, minified builds show obfuscated names and you keep mapping.txt to map them yourself.
• Platform maturity. Crashlytics' iOS and NDK support is generally available and battle-tested. Codeskop's iOS and KMP support is beta, and Android native crashes come without a native stack.
• ANR traces. Codeskop's ANR reports don't include a main-thread stack trace yet, so you'll still want Play Console or Crashlytics for the trace itself.
• Firebase integration. If you already use Analytics, Remote Config and BigQuery, Crashlytics ties into all of them.
• Unity is supported; Codeskop doesn't support it.

Where Codeskop adds something#

• API failures as first-class issues. With one line on your OkHttp client, every 4xx, 5xx, timeout and connection error becomes an issue grouped by endpoint (POST /orders/{id} → 500), with the devices, OS versions and app versions affected. When a payment step fails because an M-Pesa STK push request timed out, you see the failing endpoint, not just the null-pointer it caused three screens later.
• ANRs on older Android. Crashlytics' ANR reporting needs Android 11+. Codeskop adds a watchdog for Android 7–10, which still matters for budget Tecno, Infinix and itel phones that never got an Android 11 update.
• Offline-first delivery. Every event is written to disk first and uploaded by WorkManager when there's a connection. Crashes and ANRs are never evicted from the queue, which helps for users on intermittent 3G or capped data bundles.
• Alerts where your team already is. WhatsApp and Slack on Starter; Telegram, Discord and Teams on Growth.
• Mobile, web and server in one project. JavaScript errors from your React dashboard or web checkout sit next to your Android crashes (server SDKs are beta).
• Privacy defaults. Exception messages are redacted by default, query strings are stripped, and request bodies and credential headers are never captured.

Running both side by side#

Android

Codeskop chains onto whatever uncaught-exception handler was installed before it and always passes the crash on, so Crashlytics keeps working. Add both to your app module:

1// app/build.gradle.kts (with the google-services and crashlytics plugins applied)2dependencies {3    implementation(platform("com.google.firebase:firebase-bom:34.19.0"))4    implementation("com.google.firebase:firebase-crashlytics")5    implementation("com.google.firebase:firebase-analytics")6 7    implementation("com.codeskop.sdk:tracker-android:0.3.0")8    implementation("com.codeskop.sdk:tracker-okhttp:0.3.0") // optional: network capture9}

Firebase initialises itself from google-services.json. Start Codeskop from the manifest (zero code) or in your Application:

1class MyApplication : Application() {2    override fun onCreate() {3        super.onCreate()4        CodeskopAndroid.init(this, CodeskopConfig(apiKey = BuildConfig.CODESKOP_KEY))5    }6}

Then add Codeskop to the OkHttp client your app uses:

1val client = OkHttpClient.Builder()2    .codeskop()   // failed requests + timing for every request3    .build()

Report handled errors to both if you want them in both places:

1try {2    checkout.submit(order)3} catch (e: PaymentException) {4    FirebaseCrashlytics.getInstance().recordException(e)5    Codeskop.recordException(e)6    showRetry()7}

Flutter

Both SDKs want FlutterError.onError and PlatformDispatcher.instance.onError. Let Codeskop.runGuarded set up its hooks and the zone first, then wrap them so each error goes to both:

1import 'dart:ui';2 3import 'package:codeskop_tracker/codeskop_tracker.dart';4import 'package:firebase_core/firebase_core.dart';5import 'package:firebase_crashlytics/firebase_crashlytics.dart';6import 'package:flutter/material.dart';7 8void main() {9  Codeskop.runGuarded(() async {10    await Codeskop.init(apiKey: 'cs_live_pk_YOUR_KEY', endpoint: 'https://api.codeskop.com');11    await Firebase.initializeApp();12 13    // Chain Crashlytics after Codeskop's handlers instead of replacing them14    final codeskopFlutterHandler = FlutterError.onError;15    FlutterError.onError = (details) {16      codeskopFlutterHandler?.call(details);17      FirebaseCrashlytics.instance.recordFlutterFatalError(details);18    };19 20    final codeskopPlatformHandler = PlatformDispatcher.instance.onError;21    PlatformDispatcher.instance.onError = (error, stack) {22      FirebaseCrashlytics.instance.recordError(error, stack, fatal: true);23      return codeskopPlatformHandler?.call(error, stack) ?? true;24    };25 26    runApp(const MyApp());27  });28}

1dependencies:2  codeskop_tracker: ^0.3.03  firebase_core: ^4.15.04  firebase_crashlytics: ^5.4.0

The Codeskop Flutter plugin doesn't include an HTTP interceptor, so for failed API calls add a small Dio interceptor that calls Codeskop.captureApiError (the Flutter docs have one you can copy).

A pre-release checklist

1. Trigger a test crash in a release build and confirm it appears in both consoles. Use a cs_test_pk_ key for testing so it doesn't count towards your quota.
2. Upload or archive your R8 mapping.txt for every release (Crashlytics uses it; you'll need it to read Codeskop traces).
3. Check that the OkHttp client your app actually uses was built with .codeskop(). Adding the Gradle dependency alone captures nothing.
4. Turn on airplane mode, trigger a handled error, reconnect, and check it arrives: that's the offline queue at work.
5. Test on a low-end Android 9 or 10 device if your users have them, since that's where the ANR watchdog matters.

Migration notes#

If you later move fully from Crashlytics to Codeskop:

• Run both for at least one or two releases and compare crash counts per version before removing Crashlytics.
• API mapping (documented equivalents): FirebaseCrashlytics.recordException(e) → Codeskop.recordException(e) on Android; FirebaseCrashlytics.instance.recordError(e, s) → Codeskop.recordError(e, s) on Flutter; setUserId(id) → Codeskop.identify(id) (use your own stable ID, never an email).
• Historical data doesn't move. Crashlytics history stays in Firebase (and BigQuery, if you export it).
• Plan for deobfuscation. Keep each release's mapping.txt and Flutter --split-debug-info symbols.
• ANR data starts on Starter. If ANRs matter to you, budget for a paid plan.