Room Escape: 50 rooms I comes from S.henzhen Zhonglian Hudong.  
 It's very typical of the 100s of other room escape games published on the App Store.  Look around, pick up things, find clues, open drawers, lift up pillows etc.
 The game offers a few free clues.  To get more clues: watch some ads. I went through 17 rooms in about 1.5 hours.  There is absolutely no plot.  I thought that it was unlikely that I would finish this game.  However, I did end up finishing the game in about 5 days. I did use the free clues a lot.

https://apps.apple.com/us/app/room-escape-50-rooms-i/id1107507527

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