It took Apple 20 hours to reach the In Review status for a newly submitted app. The review phase lasted three hours — the app was rejected because of small fonts for iPad. After submitting new build and version it again waited for review, but only for an hour. The review phase now took only ten minutes and the app was approved.
This is not exactly a “1 day” process, more of a “3 day” process, but still very good.
The app, by the way, is called Gastritis Help. Choose your symptoms and choose remedies from various alternative healing methods such as Homeopathy, Ayurveda, home remedies etc. to decide upon your therapy. The link for the app store is:
https://itunes.apple.com/us/app/gastritis-help/id1101751987?ls=1&mt=8
The link for the Android version of the app is:
https://play.google.com/store/apps/details?id=com.gastritishelp