Hallo all, I did a test integration of MetricKit into one of our apps...I'am on macOS Ventura 13.3.1 (a). The app is not distributed via the App Store. I subscribed to the MXMetricManager and implemented the didReceiveDiagnosticPayloads function. So far everything seems to work, when I use in Xcode: Debug -> Simulate MetricKit Payload I get a callback and the payload. So I did some further testing. When I build the app debug version with a test crash and then run the Debug Version (without Xcode) and let it crash the next time I start the app I get a callback to didReceiveDiagnosticPayloads with all the information about the crash. But I'am not able to get a hang report. I tested it by adding a sleep (60) and adding some intensive computation work on the main thread so that it is busy for several seconds, I get no hang reports :-( I'am using the Debug version and run it without Xcode. Are hang reports expected to be reported immediately? I also get after 24 hours no hang reports. Can someone help me? Thanks and have a nice day!

Two month back we published 28.11.0 version a app. for both foreground and background terminations are not properly showing by Xcode matrix Foreground Termination: I was able to see the termination bar chart for one release, but after that, the chart stopped showing real-time crash progress. However, crashes are still being reported directly by users. Why is Xcode Organizer unable to capture these events? Please help us track them effectively. Background Termination: The termination bar chart has not appeared in Xcode Organizer for the last two releases, which span nearly two months. As a result, we are unable to monitor app terminations for background scenarios.

Hello, I am currently developing an iOS SDK, and I would like to clarify the allowed use of MetricKit, specifically regarding the MXAppRunTimeMetric.cumulativeBackgroundTime value. My SDK tracks app lifecycle events for analysis purposes. I am considering sending the cumulativeBackgroundTime metric to my own backend server to monitor background usage patterns across different devices. Before proceeding, I want to confirm: Is it compliant with Apple’s App Store Review Guidelines to collect cumulativeBackgroundTime via MetricKit and transmit that data to my server? I understand MetricKit is primarily intended for performance monitoring and local analysis, but since this is a runtime metric, I would like to verify whether off-device aggregation is acceptable. I would appreciate any clarification regarding policy boundaries or best practices for this scenario. Thank you in advance!

What are my options if I want to iterate over loaded images (dynamic libraries) within a signal handler? I have a few solutions that might work, but without going too much into them, i'm curious if anyone has experience here, or ideas what to look into. Cheers, AC

what is that makes the TLS be the TLS/SErver ?

Hello Apple, I am trying to get information such as crash context whenever a user encounters a situation where the app is killed. I was wondering if the tool MetricKit is available to all users or is this a feature to those who has opted into it. I am aware that the whenever someone gets a new device or in settings, an option will appear that'll have users decide whether or not to have Apple receive data analytics during certain events on their device. Does this have any effect on whether some users may not have MetricKit? Overall, we are attempting to use MetricKit to better analyze performance of our app. It would be inefficient for us, if the population of users using MetricKit is only those who have opted into it. Thanks, dmaliro

why my Xcode organizer can not show Hangs

We are looking for a platform or portal provided by Apple that allows us to track crashes, hangs, or other runtime issues faced by users while using our iOS/macOS application. This is similar to how we currently use Windows Error Reporting (WER) for our Windows application. Important note: Our application is not distributed via the Apple App Store — it is delivered through enterprise distribution or ad-hoc provisioning.

Hello, For one of my recent release (2 versions ago), I used to be able to check its p50 of Hang Rate, but now it disappear and not showing up in XCode Organizer Metrics anymore. The p90 of Hang Rate of this version is still there. It's so unpredictable. Is there something we can do to get this data to populate? If not, may I understand usually why this issue will happen, is it something frond-end bug or is it because there is some thing abnormal going on in the back-end data?

We recently integrated MetricKit into our app; however, the 90th percentile data does not seem to match the data in Xcode Organizer. The values reported by MetricKit appear to be higher. Additionally, it looks like data for previous app versions is not being updated in Organizer as adoption of the latest version increases. Has anyone else experienced this issue? Could there be a delay in data updates for older versions in Organizer? Are there any known limitations or best practices for ensuring consistency between MetricKit and Xcode Organizer data? Any guidance would be greatly appreciated.

Is there an API that exposes the percentage of crash free sessions/users just as what we have on Firebase Crashlytics for example? Checked here https://developer.apple.com/documentation/appstoreconnectapi but dont find any.

Hi, From App analytics, we found that our app crashed from time to time on users' devices despite that we have tested it thoroughly on our devices. We are doubt that it's the reason why we can't retain them. But how can we get the crash reports for the app installed on user devices? We have no users' emails and can't ask them directly.

We are building a framework which will be used by other apps. Want to integrate crash reporting and diagnostics for our framework. Want to report crashes to our backend happening inside our framework only and ignore app level crashes. Is it possible to filter crashes like that ?

December is my first month selling products from within my apps, it's selling well, but nothing is showing up in Apple's report, I don't know if there is a specific day to show, minimum withdrawal, payment day, I'm confused.

Hi Folks, I’m looking to pull performance metrics using https://developer.apple.com/documentation/appstoreconnectapi/get-v1-apps-_id_-perfpowermetrics from Lookback for yesterday's data. Could you guide me on the best way to filter or query this specific timeframe? I dont actually see a way pull data from history. Any advice or steps would be greatly appreciated. TIA!

I'm currently pulling device-specific data for my app, and I'm manually listing 150 models like this: device_models = [ "iPhone1_1", "iPhone1_2", "iPhone2_1", ... "iPad16_6"] Is there an API endpoint or an automated method to dynamically retrieve a complete list of device models? I'm specifically looking to connect this with the performance metrics API to monitor launch times per device type. Any suggestions on how to streamline or automate this list would be greatly appreciated. Thanks!

Hi everyone, I’m working with the App Store Connect API to analyze my app's launch time performance, but I’d like to retrieve historical data spanning multiple dates. However, I haven’t found parameters like startDate or endDate in the API documentation. Is there any way to retrieve data for past dates, or is the API limited to recent data only? If anyone has experience with this or any workaround, I’d love to hear about it. Thank you!

Hi Folks, I'm currently using the App Store Connect API's perfPowerMetrics endpoint to pull launch time metrics for my app, but I want to break down the data by specific iPhone models (e.g., iPhone 13 Pro, iPhone 12, etc.). I’ve tried using filter[deviceType] set to all_iphones, which works, but it aggregates data for all iPhone models. Does anyone know the specific identifiers for individual iPhone models, or if there's a way to retrieve metrics by specific iPhone model segments? TIA

I'm a big fan of MetricKit. I decided to see how my apps are performing with iOS 18 and well, I'm not getting any metric payloads from those devices. Metric payloads received from my test devices adopting iOS 18 has pretty much bottomed out to zero. Is anyone getting MetricKit MXMetricPayloads from iOS 18 devices? FB15461298 - MetricKit: Production issue / regression with iOS 18 - Significant dropout or metric payloads being generated since 18.0 - nearly no reports To demonstrate the issue, I decided to graph the metric payloads my infrastructure receives for all of my apps across all of my devices over the last 16 months starting with WWDC23 timeframe. This data is grouped by count per month. A trend can easily be seen starting in June 2024 where I started to adopt iOS 18 betas. Zooming in since WWDC24, grouped by week, it is much easier to see the decline. Note, the second screenshot shows data collected from Xcode builds, TestFlight, and App Store. The last data point from today was a manual creation from Xcode's Debug window, so at least that triggering mechanism works and I can confirm all of my code to upload off device works as expected. On the bright side, I guess I will ship this 'payload received over time' feature in my MetricKit payload analyzer app with a scrolling window and group by features that make up these screenshots.

https://developer.apple.com/documentation/metrickit I am unable to get the MetricKit logs for past 24 hours time period on my test flight build. I have been able to achieve immediate logs for crash, cpu exception and diskwrite exceptions. But the logs which contains all the crashes, cpu exceptions and diskwrite exceptions, battery and network details, etc for the previous day/24h are never generated. I have used the following method to log the payloads in the file systems. I have tested the same on normal xcode builds as well as TestFlight build. func didReceive(_ payloads: [MXDiagnosticPayload]) https://developer.apple.com/documentation/metrickit/mxmetricmanagersubscriber/didreceive(_:)-9yd4u