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Testing

Remko Welling edited this page Nov 3, 2026 · 3 revisions

Testing

In het Nederlands: Testen

Thank you for helping to test Zangbundel. Before the app can be published on Google Play for everyone, it has to be tested for 14 days by at least 12 testers. With your help we get there, and we find the faults before a group meets them at a campfire.

The test is for adults (18+): leaders, parents and other volunteers. You need an Android phone (Android 8 or later) and the Google account you use in the Play Store. To really test a campfire you need a second phone, your own or another tester's.


How to start

  1. Join the Google group Zangbundel testers with your phone's Google account. You may have done so already if you found this page through the group.
  2. Open the test link on your phone or computer, signed in with that same account: https://play.google.com/apps/testing/nl.pe1mew.zangbundel.app. Tap Become a tester.
  3. Install Zangbundel from the link on that page, or search for Zangbundel in the Play Store. After step 2 it can take a few minutes before the app shows up for you.
  4. Keep the app installed for 14 days and stay in the test. If the test drops below 12 testers, the count starts again.

Songs

The app contains no songs. Only the leader needs them: singers receive every song over Bluetooth.

  • The default library. In the app, go to Songbook → Libraries and tap Add Zangbundel bibliotheek. It downloads the app's own library of campfire and children's songs from GitHub. Accept its licence, and the songs are in your songbook. Without internet on the phone: download zangbundel-bibliotheek-latest.zbl on a computer, copy it to the phone, and open it with Add a library → From a file.
  • Your own library. You can make a library of your own songs, for example your group's song or songs you may sing but not publish. Copy the Zangbundel bibliotheek repository into a private repository of your own, add your songs as ChordPro text files (.cho), check them with its validator and build a .zbl file. Then open that file on the leader's phone with Add a library → From a file. Your own private library gives every step. Only add songs you are allowed to share with your group.

What to test

At your own pace; note what strikes you. The manual explains everything.

  1. First use: open the app, read How it works and What happens to my data?.
  2. Songs: under Songbook → Libraries, add the Zangbundel bibliotheek (see Songs), and your own library if you made one. Read a few songs; swipe left and right, or use the round buttons at the bottom.
  3. A campfire, with two phones: one taps Lead a campfire, the other joins from the list. Also try with the QR code: scan it with the second phone's camera app.
  4. Sending songs: the leader taps Now on a few songs. Do they reach the singer, and how fast?
  5. Screen off: turn the leader's screen off for 5 minutes, then send a song. Does it still work?
  6. Leaving and ending: leave the campfire as a singer, and end it as the leader.
  7. Sharing: check under About that the fingerprint under Signature is 57:86:7B:…:9B:10, and try Zangbundel on another phone.
  8. Language: choose another language under Settings → Language.

During the 14 days, hold at least two campfires with another tester. The more phones, the better: that is exactly what we want to learn.

What to report

Report anything that is wrong, unclear, or different from what you expected, small things too:

Say what you did, what happened and what you expected, and give the make and model of your phone and its Android version. A screenshot helps, but leave out other people's faces and names.

Your data

The app sends nothing to its makers and does not track you; see privacy. For the test, the group's manager sees your e-mail address: it is used only to give you access to the test and to write to you about it. Other members do not see it.

Stopping

Open the test link and tap Leave the program, and leave the group. Remove the app if you no longer want it; you can get it from the Play Store again once it is public.

Thank you for your help!

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