Crashlytics vs TestFlight: What are the differences?

Developers describe Crashlytics as "The world's most powerful, yet lightest weight crash reporting solution. Free for everybody". Instead of just showing you the stack trace, Crashlytics performs deep analysis of each and every thread. We de-prioritize lines that don't matter while highlighting the interesting ones. This makes reading stack traces easier, faster, and far more useful! Crashlytics' intelligent grouping can take 50,000 crashes, distill them down to 20 unique issues, and then tell you which 3 are the most important to fix. On the other hand, TestFlight is detailed as "iOS beta testing on the fly". With TestFlight, developers simply upload a build, and the testers can install it directly from their device, over the air.

Crashlytics and TestFlight are primarily classified as "Mobile Error Monitoring" and "Beta Testing / Mobile App Distribution" tools respectively.

Some of the features offered by Crashlytics are:

• Instead of just showing you the stack trace, Crashlytics performs deep analysis of each and every thread. We de-prioritize lines that don't matter while highlighting the interesting ones. This makes reading stack traces easier, faster, and far more useful!
• Crashlytics' intelligent grouping can take 50,000 crashes, distill them down to 20 unique issues, and then tell you which 3 are the most important to fix.
• Now you'll get precise information on the performance of the devices that your apps run on. We'll let you know if the crash only happens on a specific model or generation of a device. We'll even tell you other information, like whether your app only crashes in landscape mode, or whether the proximity sensor is always on.

On the other hand, TestFlight provides the following key features:

• Sessions- Discover how testers are using your application. Watch as they progress and take unexpected turns.
• Crash Reports- Reported in realtime, with environment snapshots and full session activity.
• In-App Questions- The most effective way to get tester feedback. Get the answers you need by asking questions the moment a checkpoint is passed.

"Crash tracking" is the top reason why over 74 developers like Crashlytics, while over 61 developers mention "Must have for ios development" as the leading cause for choosing TestFlight.

According to the StackShare community, Crashlytics has a broader approval, being mentioned in 352 company stacks & 69 developers stacks; compared to TestFlight, which is listed in 313 company stacks and 65 developer stacks.