Issue Detection is Easy.

Remediation is Hard.
We are fixing that.

Issue Detection is Easy.

Remediation is Hard.
We are fixing that.

Issue Detection is Easy.

Remediation is Hard.
We are fixing that.

The developer observability platform for Android and Kotlin Multiplatform apps. Connect your AI assistant to Kotzilla and detect production issues, diagnose root causes, and apply accurate fixes.

The developer observability platform for Android and Kotlin Multiplatform apps. Connect your AI assistant to Kotzilla and detect production issues, diagnose root causes, and apply accurate fixes.

KMP approved

Trusted by leading companies to speed up issue resolution and reduce downtime

From Detection to Accurate Remediation

From Detection to Accurate Remediation

Other tools collect logs and traces. We map runtime data to your full architecture, every component, every dependency. That's why our AI fixes are accurate, not generic.

Runtime Data

Thanks to Koin's built-in instrumentation, we capture component resolution, timing, scopes and lifecycle automatically. No manual traces needed, no blank spots.

Architecture Visibility

Dependency graphs, modules, components, relationships, resolution chains. We map how your app is wired so when something breaks we know exactly where and why.

Fix Patterns

Accurate fixes require understanding Kotlin, Android component lifecycles and best practices. We have 9 years of accumulated patterns.

Powered by Koin, the #1 dependency injection framework for Android

40%

all Android apps

20M+

monthly downloads

130

countries · #1 USA

How Kotzilla works (3 steps)

How Kotzilla Works
(3 steps)

Automatic Issue Detection

Kotzilla finds crashes, ANRs, slow startups, and performance issues in your apps.


Kotzilla analyzes your apps for crashes, slow startups, and performance issues.

Fix via the MCP Server

Your AI assistant uses the MCP Server to find root causes and apply accurate fixes

Validate Fixes & Monitor

After fixes, Kotzilla tracks runtime data and alerts you if regressions occur.

Real problems. Real fixes.

See how teams use Kotzilla.

Real problems. Real fixes.

See how teams use Kotzilla.

Kotzilla gives Android and KMP teams full visibility into production issues and the context to fix them with or without AI

Crash reporting

Unified crash reporting across all KMP targets, including iOS with fully desymbolicated stack traces. One SDK configuration.

Performance Monitoring

Identify slow startups, ANRs, and frozen screens. Correlate them with blocking ViewModels or heavy component resolutions.

Improve Maintainability

Visualize Koin dependency graphs while ensuring real-time compile safety for maintainable and runtime-safe code.

Accelerate Fixes with AI

Connect your AI coding assistant to Kotzilla via the MCP Server. Ask in natural language to find root causes and apply accurate fixes.

Full Production Visibility

Get real-time insights on components, threads, and memory to quickly detect and understand app issues and crashes.

Fast Root Cause Analysis

Full session, component, and performance context to quickly resolve production issues and minimize user impact.

0

%

Lower monitoring costs

with essential runtime data capture

0

%

time-to-fix

Seamless flow from detection to resolution, in your terminal.

0

x

better accuracy

We have the Context and the Knowledge Base LLMs need

Why Android developers are 
moving beyond Firebase

Why Kotlin Developers Are Switching from Firebase

Firebase Performance Monitoring has limits. Here's why Koin developers are choosing Kotzilla for deeper, actionable insights into performance issues and crashes.

Features

Kotzilla

Firebase

Components & Dependency Graph View

Components & Dependency Graph View

Built-in for Koin

Built-in for Koin

Not automatic (manual traces required)

Not automatic (manual traces required)

Thread Visibility & Performance

Thread Visibility & Performance

Built-in (main and background threads)

Built-in (main and background threads)

Limited (manual traces required)

Limited (manual traces required)

Root Cause Analysis

Root Cause Analysis

Dashboards for issues and root cause analysis
tools

Dashboards for issues and root cause analysis
tools

Not directly supported

Not directly supported

User Sessions Performance View

User Sessions Performance View

Graphical timeline, session-specific, real-time

Graphical timeline, session-specific, real-time

May be delayed or partial

May be delayed or partial

Instrumentation Effort

Instrumentation Effort

Minimal (automatic + API optional)

Minimal (automatic + API optional)

Moderate to high for custom traces

Moderate to high for custom traces

Crash Reporting in Context

Crash Reporting in Context

Unified crash & performance data with full session context

Unified crash & performance data with full session context

No unified view with Crashlytics

No unified view with Crashlytics

Cross Platform Support

Kotlin-only (Android + KMP using Koin)

Broad (Android, iOS, web)

Cross Platform Support

Kotlin-only (Android + KMP using Koin)

Broad (Android, iOS, web)

Cross Platform Support

Kotlin-only (Android + KMP using Koin)

Broad (Android, iOS, web)

Fix issues with AI

Fix issues with AI

MCP Server for any MCP-compatible AI assistant

MCP Server for any MCP-compatible AI assistant

“Generate AI Insights” available for Crashlytics only

“Generate AI Insights” available for Crashlytics only

Trusted by Koin developers worldwide

Real teams, concrete results, from faster startups to fewer crashes in production.

Ferdinand S.

Android Team Manager @Automotive Industry

“Combines the advantages of open source software and professional support with an excellent customer service”

Sébastien Balard

Senior Dev Android/iOS @Libertyrider

“I found no other tool to independently monitor our SDKs deployed to third-party applications. It is crucial to get independent data to understand our SDKs' users challenges."

Laurent Paquot

Senior Android Engineer @Worldline

“We had already started simplifying parts of the app, and with the Kotzilla Platform, we could clearly see the benefits. User sessions are stable and responsive, with optimal performance and a smoother overall experience. Enabling the Kotzilla SDK in the release build made a big difference. We'll keep monitoring regularly as we grow."

Romain Zanon

Technical Leader @Canal+

“Kotzilla helped us improve startup times by over two seconds on some low-memory devices, even after applying Android's Baseline Profiles. We can also monitor multiple applications under the same package name separately, which gives us much clearer insights."


Partners & Recognitions

The Kotzilla Platform 

The Kotzilla Platform 

The AI-native observability platform built on Koin. Detect, understand, and fix production issues across Android, Kotlin Multiplatform, and Compose Multiplatform with a single SDK

Kotzilla MCP Server

The MCP Server gives Claude Code, Cursor, Windsurf, and other AI plugins the tools and context to find root causes and apply accurate fixes, all in natural language.

Register your app and configure the SDK automatically

Analyze app performance and stability across Android and KMP targets

Compare versions and prioritize issues across multiple apps

Get root cause analysis with full context, then apply accurate fixes

Curated knowledge base of Kotlin patterns and antipatterns

Koin IDE Plugin

Visualize dependency graphs, navigate your code, detect issues and fix them directly in Android Studio or IntelliJ with your AI coding assistant. Works for both Koin DSL and Koin Annotations usages.

Visualize Koin dependency graphs

Detect config errors, performance issues, and crashes before runtime

Get root causes of crashes and performance issues right in your IDE

Generate fixes using the Kotzilla MCP Server from your IDE terminal

Integrate seamlessly with Kotzilla Console for additional analysis

Kotzilla SDK

A lightweight SDK with Koin-level visibility that captures runtime crash and performance data, powering accurate AI-driven fixes with minimal overhead.

Lightweight and efficient app performance and crash monitoring

Uses Koin containerization for smart and relevant data collection

Gathers detailed performance metrics automatically

Feeds runtime context into the platform for AI-driven remediation

Minimal integration overhead

Kotzilla Console

A performance and stability cockpit for your app, connecting high-level KPIs (crash rates, ANR rates, slow screens) to the components and root causes behind them.

Automatically detects ANRs, crashes, slow screens and components

Architecture diagrams with runtime data for root cause analysis

Graphical views for fast investigation and analysis

Performance and regression analysis reports

Accelerate root cause analysis and resolution with AI guidance

Fix crashes, ANRs, frozen screens and slow app startups with Kotzilla

Built for Koin. Get full visibility and accurate AI-driven fixes through the Kotzilla MCP Server, all in natural language

No credit card required

Cancel anytime

Fix crashes, ANRs, frozen screens and slow app startups with Kotzilla

Built for Koin. Get full visibility and accurate AI-driven fixes through the Kotzilla MCP Server, all in natural language

Fix crashes, ANRs, frozen screens and slow app startups with Kotzilla

Built for Koin. Get full visibility and accurate AI-driven fixes through the Kotzilla MCP Server, all in natural language

The developer observability platform for Android & Kotlin Multiplatform apps. From detection to accurate remediation.

Powered by Koin

The developer observability platform for Android & Kotlin Multiplatform apps. From detection to accurate remediation.

Powered by Koin

The developer observability platform for Android & Kotlin Multiplatform apps. From detection to accurate remediation.

Powered by Koin

Trusted by Kotlin Teams

See how mobile development teams are using Kotzilla to improve their app performance

Ferdinand S.

Android Team Manager @Automotive Industry

“Combines the advantages of open source software and professional support with an excellent customer service”

Sébastien Balard

Senior Dev Android/iOS @Libertyrider

“I found no other tool to independently monitor our SDKs deployed to third-party applications. It is crucial to get independent data to understand our SDKs' users challenges."

Laurent Paquot

Senior Android Engineer @Worldline

“We had already started simplifying parts of the app, and with the Kotzilla Platform, we could clearly see the benefits. User sessions are stable and responsive, with optimal performance and a smoother overall experience. Enabling the Kotzilla SDK in the release build made a big difference. We'll keep monitoring regularly as we grow."

Romain Zanon

Technical Leader @Canal+

“Kotzilla helped us improve startup times by over two seconds on some low-memory devices, even after applying Android's Baseline Profiles. We can also monitor multiple applications under the same package name separately, which gives us much clearer insights."