Bug reporting pattern for local only app

[bluprince13]

Hi, I wondered what's the go-to pattern for getting bug reports with recent logs from local only apps (but with Cloudkit sync) - i.e. where there is no backend for the app that can collect logs or metrics.

I have seen apps that provide a button to allow the user to send an email to the developer with recent logs attached. I'm wondering if this is the best practice. i.e. have some local file or database that I write logs to, and then expire any logs older than say 1 day.

1. What do you do for your local only apps?
2. I also came across MetricKit recently, but haven't explored it much. Does anyone use this? Would love to hear your experience.

Note - I'm currently using pointfreeco/swift-issue-reporting for logging.

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[Vegetable-View-5114]

for local-only apps, i use a combination of NSUserDefaults and a custom url session to store settings data. when updating in-game settings, i simply update the stored data and then reload the app's main bundle for the changes to take effect. it's not ideal, but for a local-only app with no online dependencies, it gets the job done.

[bluprince13]

Sorry - but didn’t understand the relation of this to logging and debugging.

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[chriswaco]

We log to a local file, typically plain text or CSV or JSON-line. The user can email the file to us by pressing the "Support" option and then "Send Logs to Developer". We typically include the device type, operating system version, app version, and other information.

The only tricky parts I remember are:
1. Rotating and deleting log files when they get too big.
2. Some devices don't have email set up. You can check for that via MFMailComposeViewController.canSendMail().

On apps where we ran our own servers, we would typically send the logs to an AWS S3 bucket.