Top 10 Best Practices for Mobile App Testing Distribution

The Basics: What Is Binary Distribution?

If you're developing a mobile app, you've probably heard of binary distribution. But what does it actually mean? In a nutshell, binary distribution is the process of creating and distributing files (like APK, IPA, or AAB) so testers can install your app directly on their devices. It's a streamlined way to get your latest app version into testers' hands without needing to publish it publicly. This setup is essential for gathering feedback, fine-tuning performance, and ensuring quality—all before the big release. A solid binary distribution strategy helps you deliver polished, functional apps quickly and efficiently.

The Shift Away from Microsoft App Center

As you may have heard, Microsoft is phasing out App Center. Yep, it’s true—many teams are now looking for alternative solutions to handle mobile app testing and distribution. This change has opened up a whole new conversation around how to find the right tools that offer similar flexibility and security. For developers accustomed to App Center's ease of use, finding a new solution that keeps things running smoothly is a top priority. The transition has sparked a fresh focus on mobile testing distribution strategies, with developers re-evaluating how to streamline their workflows in this new landscape. Appcircle is the ultimate alternative to App Center, with all the best practices listed below already implemented on the platform.

Top 10 Testing Distribution Best Practices to Consider

With the basics and new challenges covered, let’s dive into some best practices for setting up an effective mobile testing distribution process that keeps things moving smoothly and securely.

1. Set Up Different Groups for Different Target Segments

Having separate groups for testing—like alpha and beta—is key to gathering targeted feedback. You might have internal groups from your company or bring in external testers for fresh perspectives. Dividing testers this way lets you focus on the type of feedback you need, whether it’s initial bug finding or final polishing.

2. Use Corporate Emails for Added Security

Managing users in your testing groups can get messy, especially if team members leave or move to new departments. Adding testers with corporate emails makes it easier to handle this, ensuring quick adjustments as people come and go. Using LDAP to manage test groups can also simplify things on the admin side, making the whole process seamless and secure. Firebase, for instance, requires testers to enroll with Gmail accounts, complicating test group management. For further details, see our comparison blog.

3. Separate Authentication Methods for Test Groups

Different test groups may require different access levels. For internal teams, use secure options like LDAP or SSO. For external testers, it might be simpler to set up static credentials if they’re not on your company’s domain. This setup maintains security while making it easy for everyone to access what they need.

4. Optimize File Sizes for Faster Distribution

Distribution files can be hefty—sometimes over 1GB! Downloading such large files can slow down testing, especially on older devices. To avoid this, optimize files based on the device type, ideally reducing sizes to 100-300MB. Smaller files make testing faster and smoother, and your testers will thank you for it!

5. Fast and Secure Downloads with Multi-CDN

Using a Content Delivery Network (CDN) can make downloads both faster and more reliable. A multi-CDN setup ensures speedy, secure downloads across regions, so testers can access files without delays. It’s a great way to ensure a global reach without compromising on performance.

6. Update the Build Number with Each Release

Each release should come with an updated build number so testers can easily keep track of what’s new. Including the version info on the app package and linking to detailed docs helps testers see exactly what they’re testing. Appcircle’s Badge feature is a handy tool for labeling each package with up-to-date versioning.

7. Add Clear, Helpful Release Notes

Keeping testers in the loop on what's changed in each version is key to quality feedback. Integrate your CI pipeline with ticketing systems like JIRA or Azure Board to generate release notes automatically. This way, testers have a snapshot of updates and bug fixes at a glance, saving everyone time.

8. Prioritize Security with iOS Enterprise Certificates

If you’re using an Enterprise Certificate for iOS testing, take extra security precautions. Apple does not allow public distribution of internally distributed apps, and if Apple detects that you are distributing an app signed with an Enterprise certificate without using authentication, it will impose severe sanctions. Check out Apple Enterprise Program for tips to ensure you’re following Apple’s best practices for secure testing distribution.

9. Notify the Team About New Test Builds

Good communication is essential. Automate notifications through tools like Slack, Teams, email or webhooks so everyone’s updated when a new build is ready. Quick alerts keep testing cycles on track, ensuring that no one misses a new release.

10 Generate Insightful Reports

Testers and admins alike benefit from detailed reports that show who tested which version, on which device. Knowing the device breakdown and test coverage helps you identify any gaps, ensuring comprehensive feedback from every possible angle.

Bonus Tip 1: Show Only Relevant Packages Based on Device

Simplify things for your testers by showing them only the packages they need. For instance, if a tester logs into the testing portal from an iOS device, they should see only IPA files, while Android users see APKs. A tailored view minimizes distractions and lets testers dive right into what matters.

Bonus Tip 2: Don’t Forget About Harmony OS

Harmony OS is emerging as a contender alongside iOS and Android, so it’s a good idea to consider its compatibility in your testing strategy. Broadening your testing to include new platforms keeps your app adaptable and accessible.

Wrapping It Up

Following these best practices will make your mobile testing distribution process faster, more secure, and far easier to manage. As mobile testing evolves, keeping up with the latest practices ensures you’re always ready for whatever comes next. With an effective distribution plan, you can confidently deliver a polished, ready-to-go app to users—wherever they are! Start a free trial with Appcircle today and experience firsthand how easy it is to elevate your testing distribution.