Yes! You can earn 2 to 4 credits if you check in consistently.
Please kindly note that the check-in rules below：
1 Star: Check in for the first time.
2 Stars: Check in for seven consecutive days AND earn 14 ad credits during that time. Earn 7 ad credits and check in at least 6 days in one week, so you will not lose a star.
3 Stars: Check in for another seven consecutive days AND earn 28 ad credits during that time. Earn 14 ad credits and check in at least 6 days in one week, so you will not lose a star.
If you want to keep the stars you have, you need to check in at least 6 days and earn the corresponding credits every week. Don’t worry if you forget to check in 2 days in one week and wind up losing a star. You can get it back by earning 30 ad credits in one week (from the day the star was lost).
Please note some credits granted by Dingtone is not counted as ad credits. The only ways to get free ad credits are watching videos or completing offers.