Download

Get Spinjam on your phone.

Spinjam is in open beta. iPhone installs through a TestFlight invite and Android through Google Play testing. The public store listings are on their way.

Bring a bike, or don't

Any Bluetooth bike or sensor speaking the standard fitness profiles reports cadence and power live. Without one, Spinjam still builds and coaches the ride. You ride to the cues.

How to install

Spinjam is in beta, so it installs a little differently from a store app. Each path takes about two minutes.

Android, through Google Play testing

Google Play has a private test track for Spinjam. It needs an invite, and after that Play updates the app for you.

1. Get on the tester list

   Join the beta with the Google account the phone uses for Play. Spinjam adds that address to the test track by hand. Signing up opens the invite for you.

2. Open the invite link

   The invite is a link, not an app. Open it on the phone while signed in to that Google account, then tap Become a tester.

   Searching Play for Spinjam finds nothing until this step is done. Test apps never appear in search.

3. Install from Play

   The same page now shows Download it on Google Play. Tap it, then Install, as with any app.

4. If Play says the app is already installed

   A copy from the APK blocks the Play copy, because the two are signed differently. Uninstall the APK copy first, then install from Play.

5. Updating

   New builds arrive through Play's normal updates. Nothing to do.

iPhone and iPad, through TestFlight

Apple allows a pre-release install only through TestFlight.

1. Open the TestFlight link

   Tap the TestFlight button above on the iPhone you will ride with.

2. Install TestFlight

   First time only, the link prompts an install of Apple's free TestFlight app.

3. Accept and install Spinjam

   Tap Accept, then Install in TestFlight. Spinjam lands on the home screen with a small orange dot beside its name, which marks a beta app.

4. Updating

   TestFlight installs new builds on its own and can notify you. Each build works for 90 days, and a newer one always arrives before then.

Backup on Android: install the APK directly

An APK is the app as one file. Android lets you install it after one permission prompt. It does not update itself, so Google Play testing is the better route.

1. Download the file

   On the phone, tap Latest APK above. Chrome warns that this file type can harm the phone, which is its standard notice for any APK. Only download the file from spinjam.app, never from a link someone forwarded.

   Each download lists its full SHA-256. It catches a download that stopped early, or a file that is not the one on this page. To check it, copy the file to a computer and run shasum -a 256 spinjam-latest.apk on a Mac, or certutil -hashfile spinjam-latest.apk SHA256 on Windows. For the beta, name spinjam-beta.apk instead. A different value means a different file: delete it and download again.

2. Open it

   Tap the download notification, or open the Files app and find spinjam-latest.apk in Downloads.

3. Allow the install, once

   The first time, Android says the browser is not allowed to install unknown apps. Tap Settings, turn on Allow from this source, and go back.

4. Install and open

   Tap Install, then Open. If Play Protect asks to scan the app, let it. Then turn the permission back off: Settings, Apps, your browser, Install unknown apps.

5. Updating

   Come back to this page and install the new file over the old one. Your rides and settings stay.

If something goes wrong

• Android says App not installed. The file was signed with a different key than the Spinjam already on the phone. If the file did not come from spinjam.app, delete it and keep the app. If it did, you are switching between the APK copy and the Play copy: uninstall Spinjam, then try again.
• The APK download never starts. Some browsers block it. Open this page in Chrome.
• TestFlight says the build is not available. The invite was for an older build that expired. Come back to this page for the current link.
• Play says the item is not found. The phone's Google account has not accepted the invite link, or is not on the tester list.