Having experienced some rather concerning keychain issues with Digits a few months back and seeing the writing on the wall with Twitter and their stockholders calling for blood I dropped all of my Fabric dependencies in November.
For crash reporting the best alternative I found (superior to Crashlytics IMO) is Sentry[0]. It's been awesome so far and allows you to easily federate crash reporting over multiple platforms. I have no association with the company.
Aside we're also building a bunch of open source tooling (our entire platform is open source) around mobile, so if you're looking to roll your own or bring something in-house, we'd love to hear your feedback.
For crash reporting the best alternative I found (superior to Crashlytics IMO) is Sentry[0]. It's been awesome so far and allows you to easily federate crash reporting over multiple platforms. I have no association with the company.
[0]: https://sentry.io/