Error Tracking for SaaS Applications
Debug user-reported issues instantly with per-user log streaming and remote log control.
>_ the problem
>_ why traditional tools fall short
- $Error aggregation tools group exceptions by type, not by user, making it nearly impossible to isolate a single customer's experience.
- $Enabling verbose logging for one user typically requires a code change, a redeploy, and coordination with the customer to reproduce the issue.
- $High-cardinality user ID indexing drives up costs rapidly on platforms that charge per indexed field or per event.
- $Session replay tools capture UI interactions but miss the backend errors, API failures, and data inconsistencies causing the real problem.
>_ how logmonitor solves this
Log Switch
Enable or disable detailed logging for a specific user remotely from your dashboard. No code changes, no redeployment. Flip the switch, ask the customer to retry, and watch their logs stream in.
Live Console
Stream logs in real time filtered by user ID. See exactly what the customer sees, including API responses, error stack traces, and state transitions, as they happen.
Zero Clutter
A clean, searchable feed means you find the relevant log entry in seconds, not hours. Filter by severity, timestamp, user, or custom metadata.
Multi-App Support
Track errors across your frontend, backend, and microservices from a single dashboard. Correlate a frontend blank screen to a backend 500 error instantly.
>_ quick setup
import { logmonitor } from 'logmonitor-js';logmonitor.init({ apiKey: 'your-api-key' });// The SDK auto-patches console.log/info/warn/error/debug// Logs are only sent in production (process.env.NODE_ENV === 'production')console.log('App started', { version: '1.0.0' });>_ pricing for this use case
The Pro plan at $19/mo gives you 25 apps and 1 million logs per month with 30-day retention, which covers most SaaS products. The Log Switch feature is available on all plans.
View all plans →>_ frequently asked questions
From the LogMonitor dashboard, you can enable detailed logging for any identified user. The SDK checks this setting asynchronously and begins capturing verbose logs for that user's session. When you are done debugging, flip the switch off. No code changes or redeployment needed.
Yes. Once you identify users via the SDK, you can filter the Live Console by user ID, email, or any custom metadata you attach. This makes it trivial to isolate one customer's log stream.
LogMonitor complements error tracking tools. While Sentry captures exception stack traces, LogMonitor gives you the full context around those errors: the sequence of events, API responses, and application state that led to the crash. Many teams use both together.
There is no limit on the number of users with Log Switch enabled. However, keep in mind that enabling verbose logging for many users at once will consume more of your monthly log quota.
No. The LogMonitor SDK handles Log Switch checks asynchronously and batches log delivery. The overhead is negligible regardless of how many users have logging enabled.
Yes. LogMonitor provides native SDKs for React and JavaScript plus an HTTP API for any backend. It integrates into your existing codebase with a single line of init code and does not require changes to your deployment pipeline.