Use APKPure App
Get Ventra Fails old version APK for Android
Hopefully you won't need this app. But if you ride the CTA, you probably will.
This simple app allows you to make a record of the place and time where your CTA Ventra card failed, as well as when it happened. If your fail goes through, you'll see it appear on the map.
**Please note: if you are trying to submit an app from an area that has no connectivity or a weak signal, your fail may not be recorded.**