Introducing Fabric


Introducing Fabric

Almost three years ago, we set out to solve the problem of mobile crash reporting. Since then, we’ve launched our deeply technical, award-winning crash reporting service, and with Twitter, expanded our product line to include a white-labeled beta distribution tool and our real-time mobile analytics product. Our mission has been, and remains, to build the best mobile developer tools.

Today at Flight, we announced the evolution of all of this work: Fabric, a modular mobile platform that makes it easy to build great apps.

We’ve thought long and hard about how to deliver great solutions to address the challenges developers face. The Crashlytics team, together with teams at Twitter and MoPub, have developed Fabric. It’s exactly what we hoped to build back when we started the company.

Fabric is modular, so you pick just the features — we call them kits — you want. If the Crashlytics Kit is the one you need for your app, you can easily add just that one. Crashlytics customers will recognize the Fabric interface: it’s based on our existing IDE plugins but with a fresh new look. You’ll even see the same familiar dashboard.

Read more about the Fabric features and individual kits on the Twitter developer blog.

What’s next

In the coming weeks, we’ll be rolling out Fabric to current Crashlytics customers. We’ve worked to make the upgrade experience very simple for you. If you’re interested in exploring the other kits (Twitter and MoPub), they are easily accessible in the new plugin.

As with all our launches, your experience and feedback is critical to us. Write to to let us know your thoughts. We really want to build the tools that you love to use.



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When Apple introduced Swift, their new programming language, at this year’s WWDC, like you our engineers didn’t waste any time and dove in to see what it was all about. After spending the past few months testing out support in our developer preview, we’re excited to announce Crashlytics official support for Swift!

Build How You Want, Where You Want

At Crashlytics, we’re huge supporters of making it as easy as possible to develop mobile apps. When Apple promoted Swift as a language that was easier to read and maintain, we knew we wanted to get on board. In anticipation of Apple’s upcoming announcement, we’re rolling out our official support so that developers can quickly get up and running. Our support for Swift provides developers with the flexibility they need to build inside their existing workflows and streamline the overall development process.

Our engineers worked tirelessly updating our backend to support the demangling of Swift crashes and took meticulous care to preserve our seamless onboarding and pristine UI. To provide you with a customized onboarding experience, our Mac app allows you to choose between building with Objective-C or Swift. Whether you’re new to Crashlytics or migrating to this new language, you’ll experience the same powerful features, combined with native support for Swift based builds.

swift_screenshot (1)

We love supporting developers as they continue to experiment with new and improved ways for building mobile apps. We’re excited for the launch of Crashlytics support for Swift, get started here.

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We launched Beta by Crashlytics with the goal of creating the most seamless beta distribution tool for developers and testers. After seeing a rapid adoption of our service, we recognized that there are other features we could build that would make beta distribution even more streamlined. We’re excited to launch group support, the first of many new features to build on top of our existing service.

We understand that often times developers need to send specific builds to a specific set of testers based on their development cycle. To combat the tedious process of individually selecting testers, we developed a much smoother and intuitive workflow. With our new groups feature, you can now distribute builds to select groups of testers with minimal effort.

With our smart search and dynamic interface, you can instantly find the testers you’re looking for. We’ve built an intuitive tester management UI allowing you to easily create tester groups and send builds to these groups within just a few clicks. To further streamline the group creation process, you now have access to your groups across every app within your organization, eliminating the need to create the same group twice.

To give you the most flexibility, we’ve integrated group management into our Mac app and Android IDE plugins — so you can send builds to your groups right within your existing workflow. For those of you who prefer continuous integration, using our build server support, you can now automatically send builds, specify the receiving groups, and publish release notes. You can collaborate with your team having them manage the testers and create groups ahead of time and just hit “send” when the time is right.

From our friends at Opera Software:

Group support from Crashlytics simplifies distributing our apps to a large set of testers. Not only is it easy to add, manage and distribute to a group, but it’s pretty too! This is exactly what every company distributing their app needs.

Carsten Zeiffert,

We hope you enjoy using groups for Beta by Crashlytics. We have many more functionalities on our roadmap and plan to continue rolling out new features in the coming months — stay tuned!

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Today, we’re excited to unveil our latest project: Answers by Crashlytics. Finally, mobile analytics you don’t need to analyze.

When we first launched Crashlytics more than two years ago, we were focused solely on solving the problem of mobile crash reporting. Since then, we’ve seen a need for powerful tools across other areas of app development — and we knew that we could apply the same design principles to meet the many challenges faced by today’s mobile app developers. With Answers by Crashlytics, along with our award-winning crash reporting tool and Beta by Crashlytics, developers now have access to a powerful, lightweight suite of products to help them not only build, but also grow great apps.

It’s been an honor to work with many of the top iOS and Android mobile teams as we have crafted Answers, and we’ve received incredible feedback:

We have Answers by Crashlytics displayed on two of our big TVs (one for iOS and one for Android) so the entire team can view the live updates of our app’s key metrics — everyone loves it!

Lars Vedo, Mobile Product Manager,

Zero Steps

Terms like ‘bloated’, ‘bulky’, and ‘unreliable’ should never describe any developer tool. We know how hard it can be to gather real-time data, gain actionable insights about user behavior, and iterate quickly to optimize your app. Don’t worry — this is what we do.

Answers streamlines the process of revealing the key drivers of your app’s growth. With just one click, and no extra code changes, you’ll have the power to understand your app’s key usage and retention metrics. We intelligently and quickly send data at low impact times to optimize and reduce traffic on your app. Built into our existing Crashlytics SDK, Answers gives you instant visibility and a constant pulse on your app’s key metrics. And it’s free.

A Dashboard That Makes Sense

Your time is precious. We don’t want to bog you down with data overload. Answers streamlines your day with a UI that calls attention only to your most critical app usage metrics. With full visibility into your growth and engagement indicators, you can immediately understand the current state of your app and intelligently decide where to invest your time.

See a spike in activity? We’ll tell you why. No more guessing if an increase in daily actives is a result of new users or your existing users becoming more active. We’ll connect the dots for you.

And if you’re anticipating increases in usage related to a major event, you can see at a glance how many users are engaging with your app at this very moment. Bring the popcorn and display this data for your team to watch the action live.

No Analysis Required

Once enabled, Answers by Crashlytics intelligently analyzes and learns your app’s behavior and begins delivering live data within minutes. We know you’re busy, and we’ve built Answers with that in mind. You no longer need to don a lab coat and pull out a calculator to understand what’s going on. We look at the long-term trend and understand that there are certain metrics that are cyclical, so we’ll proactively alert you when a pattern is truly abnormal.

You’re constantly pushing out new features and bug fixes, so you’ll want to understand how your top builds compare and how users are engaging with your latest build. View build adoption over time to see the stability of each build with a breakdown of session length and crash-free users per build.

All About Growth

We know that retention is an important metric for understanding growth — that a large increase in new users doesn’t always translate to a long-term increase in your monthly actives. At a glance, monitor what percentage of your new users are coming back within a day, week, or month of installing your app for a clear picture of true user retention.

Sometimes, simply knowing usage numbers isn’t enough to understand overall performance. Answers dives deeper, showing you the total number of user sessions and the average number of sessions per user. For more granularity, we include the median session length, along with the amount of time per day the average user spends in your app. What better way to know that your users are having an awesome experience than to see them spending more time in your app?

Finally, app stability is crucial to ensuring your users have a great experience. Know how many of your users are having crash-free days and crash-free sessions and instantly see the top issues related to your app’s stability. Since Answers is built into the same SDK that powers your crash reporting, you can immediately dive into the issues that have the greatest impact and start fixing bugs.

Experience the Power

This is just the beginning. Our engineers are already working to take Answers to the next level and we have a lot planned. As always, send us your thoughts at or find us on Twitter @Crashlytics. We’d love to hear what you think we should tackle next.

If you already have a Crashlytics account, you’ll soon see the new Answers tab on your dashboard. Otherwise, sign up here to get started with Crashlytics.

Don’t just take our word for it:

Answers by Crashlytics is the first thing I check every day. Its breakdown of crash-free users and crash-free sessions are the fundamental metrics we use to measure the stability of our app. I can’t imagine shipping an app without it.

Ryan Johnson, VP of Mobile Engineering,

Answers by Crashlytics is exactly what we’ve been looking for! We just launched a new version and it was amazing to immediately compare it’s stability to our previous versions.

Philip Connaughton, Software Engineer,

Highlights from Twitterverse:

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Why do it once when you can do it twice? After years of being the hottest party at WWDC, we’re excited to throw our very first Crashlytics + Twitter party at Google I/O. Come hang out with the top Android mobile developers as we celebrate the awesome apps you’re building.  We’ve been humbled by the support for Crashlytics for Android and Beta by Crashlytics, and are excited to share a preview of what’s to come.

Want to crash our party?

  • When: June 24, 8 p.m. – 11 p.m.
  • Where: 620 Jones Street, San Francisco
  • Price: On us!
  • How: RSVP here (act quickly – tickets are limited!)

Curious to see how we celebrate? Check out highlights from 2013 and 2012.

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At Crashlytics, we’re passionate about building tools that developers love. Three months ago we announced a new Crashlytics Labs project: a beta distribution tool to simplify the process of sharing apps with testers. Since then, we’ve seen an overwhelming demand from iOS and Android developers wanting to get their hands on our latest tool, and the feedback has been outstanding.

I love that we can manage everything from testers to builds in one place — for both iOS and Android. This is a huge improvement in our workflow.

Nicolas Melo,

Hundreds of top mobile developers have already distributed their apps to thousands of testers, and we still have people excited to experience what all the hype is about. In response to this demand, we’re excited to announce the official launch of Beta by Crashlytics. This means it’s now fully supported by our engineers, designers, user experience folks and amazing support team, among many others. This also includes a rapid release cycle, so you can expect continuous updates for features and bug fixes automatically and on a regular basis.

The Most Streamlined Beta Distribution Experience.

We’ve heard your frustrations about the state of beta distribution today. Poor UI, confusing registration systems, frequent downtime, and only single-OS support. It’s time to build something usable with both developers and testers in mind.

We applied our Crashlytics power and polish to this problem. The result: a streamlined experience for distributing apps that gives you a single, cross-platform toolset for iOS and Android. Beta distribution should be an intuitive process for you and your testers so you can focus on what matters — building your app, not stressing about getting testers up and running.

With Beta by Crashlytics, you can easily invite new testers through a seamless sign-up workflow, manage testers on the web or right within your IDE, and analyze key metrics to determine when your app is ready for prime time. Combined with our crash reporting solution, there is now a one-stop-shop for debugging and distributing apps. Oh, and it’s free.

Your App, Front and Center.

With the R&D efforts inside Labs, we’ve applied many of our major breakthroughs to Beta by Crashlytics. With only one chance at a first impression, it’s crucial to deliver a high-quality, fluid tester experience. Beta by Crashlytics helps you invite or onboard testers and send builds with just a few clicks. We authenticate the device without requiring user registration. This results in a dramatically noticeable reduction in the time it takes to get your testers up and running.

Your app and brand should be front and center, not buried behind unnecessary UI chrome or colors. Beta by Crashlytics intelligently analyzes your app’s icon and automatically tailors the tester experience to match your apps’ color scheme. The experience for your testers will be seamless and consistent with your brand.

Your Workflow, Uninterrupted.

Beta by Crashlytics is deeply integrated with our existing IDE plugins for Xcode, Android Studio, Eclipse and IntelliJ. You can now invite testers, distribute new builds and enter release notes all via our Mac app or Android IDE plugins. Using a build server? We’ve got you covered. Just upload your build, add testers and you’ll be up and running with just a few tweaks to your build script.

To ensure testers have a great experience, we’ve taken a proactive approach when working with Apple’s provisioning portal by identifying testers that you’re missing UDIDs. On Android, as soon as your testers install the Beta by Crashlytics app, it’s automatically customized and bootstrapped so your app is ready to be launched and tested.

All Your Testers, All in One Place.

The only thing more important than getting your testers up and running is managing and understanding their status. With our web dashboard, you can view the progress of your testers in a sleek racetrack UI. At a glance, you’ll see who is most active or who is still ignoring your invitations. Also, see a high-level view of most recent tester activity to identify new tester status.

Collaborate with your team without being in the same room. Our audit trail shows the most recent developer activity as your team distributes, updates release notes and invites more testers. Want to troubleshoot reported issues with your app? See a high-level overview of your top issues. With just one click you’ll be in your Crashlytics Issues dashboard, with all of our deep analysis tools to help you debug the most complex crashes. Get performance insight, starting with beta testing, all the way through App or Play store distribution.

What’s Coming.

We have a pipeline of features rolling out over our rapid release cycle. Over the next few weeks, you’ll see the beta distribution icon appear on the left sidebar of your existing account. Our dashboard will immediately get you up and running in just a few clicks. Existing customers, learn more on the Beta page and see our updated ToS and Privacy Policy. New customers looking to experience the power of Crashlytics, sign up here.

Don’t just take our word for it:

Setup was a simple drag-and-drop, and the process for sending builds to testers is a no-brainer. This is exactly the beta distribution solution we’ve been waiting for on Android!

Stephen Parish,

We do several hundred internal app releases a year and many times twice a day. Crashlytics has made this monotonous task, ultra lightweight, efficient and painless.

Tony Longo,

Crashlytics’ beta tool is, hands down, the simplest to use. Getting started took almost zero effort and their integration with XCode is excellent. I love how it does all the work of preparing and distributing builds for me all the way down to automatically detecting new archives.

Allan Carroll,


Highlights from Twitterverse:


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