Sentry
Error monitoring, performance tracing, logs, and session replay.
Best for
- Crash reporting
- Error monitoring
- Performance tracing
Not good for
- Teams that only need app-store review monitoring
Pros and cons
Pros
- The free Developer plan covers a single user with 5,000 errors per month, which is enough to monitor one production app at no cost (checked July 19, 2026).
- One workflow spans iOS, Android, React Native, Flutter, web, and backend code, so errors that cross those boundaries land in the same place.
- Issues connect to releases and, with debug symbols uploaded, to the offending line, which shortens the path from a crash report to a fix.
- Paid plans include unlimited users at a flat monthly price, so adding collaborators does not raise the bill.
Cons
- Reports arrive unsymbolicated unless you upload dSYMs, so the setup is not truly finished until that step is wired into your build.
- The breadth of errors, tracing, replay, logs, and monitors is more surface than a simple single-app crash reporter, and it takes time to configure well.
- Event quotas span several dimensions at once, so a noisy release can consume errors, spans, or replays faster than you expect.
- It monitors technical failures, not user behavior, so you still need a separate analytics tool to understand what people actually do.
Sentry is error and performance monitoring that spans iOS, Android, React Native, Flutter, web, and backend code. Beyond crashes it captures handled errors, release health, performance tracing, and session replay, and it ties each issue back to the release that introduced it. For a solo iOS developer, it turns vague one-star reviews into concrete, grouped, and actionable stack traces.
It fits especially well when errors cross boundaries, such as the app, a backend, and a marketing site, because one workflow then covers all of them. If the app already lives inside Firebase and you only want mobile crash reporting beside your other Firebase tools, Firebase Crashlytics is a lighter fit. Sentry is more than you need if app-store review monitoring is all you are after.
Pricing
Sentry uses a freemium model with a free single-user tier and flat monthly paid plans that scale by event volume.
Sentry plans (checked July 19, 2026)
| Plan | Price | What is included |
|---|---|---|
| Developer | $0 per month, limited to 1 user | 5,000 errors, 5 million spans, 50 session replays, and 1 cron monitor per month |
| Team | $26 per month billed annually, unlimited users | 50,000 errors, 5 million spans, 50 replays, third-party integrations, and optional Seer AI debugging |
| Business | $80 per month billed annually, unlimited users | Everything in Team plus unlimited metric monitors with anomaly detection, advanced quota management, and SAML with SCIM |
| Enterprise | Custom | Custom allocations across all features, a technical account manager, dedicated support, and custom data retention |
Paid plans include unlimited users and add capacity through event quotas across errors, spans, and replays. Pricing last checked July 19, 2026; confirm current numbers on the official pricing page.
Setup and integration
Sentry provides an Apple SDK for iOS in Swift and Objective-C, plus SDKs for the other platforms it supports. On iOS you add the SDK through Swift Package Manager and initialize it early in app startup; the Sentry Wizard can automate much of that, including configuration and debug-symbol upload. Once running, it reports crashes, app hangs, and watchdog terminations automatically.
The step people skip is uploading debug symbols, the dSYM files. Without them, crash reports arrive unsymbolicated and hard to read, so wire dSYM upload into your build or fastlane pipeline early. Set release names during the build too, since release health and regression tracking depend on knowing which build an error came from.
Frequently asked questions
Is Sentry free for a solo developer?
Yes, within limits. The Developer plan is free for a single user and includes 5,000 errors, 5 million spans, and 50 session replays per month (checked July 19, 2026). That is enough to monitor one app in production; you move to the paid Team plan when you need more volume or more than one user.
How is Sentry different from Firebase Crashlytics?
Both catch crashes and make them fixable, but they differ in scope. Firebase Crashlytics is mobile-first and lives in the Firebase console next to Analytics and Remote Config, while Sentry is one error workflow that can also cover your backend, web, and API code with tracing and release health. Choose by how far beyond the mobile app your errors reach.
What does Sentry cost as the app grows?
The Team plan is $26 per month and the Business plan is $80 per month, both billed annually with unlimited users, and each scales by event volume across errors, spans, and replays (checked July 19, 2026). Enterprise pricing is custom, so confirm current terms on the pricing page before you commit.
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