how? Because I dont want to download the new and the all of my progress will disepird
Make a save file of where you stopped.
Download the newest version of Dawn Chorus then install/update the app using the apk (Don't delete the past Dawn Chorus app, installing the new build will update the past Dawn Chorus app) then you can load the save file and continue where you left of.
Also, when you update it, all of the progress will be saved (e.g. photos that you hve unlocked in the gallery, texts that you have read can be skipped when using the skip feature, etc.)