[JOINT FILING AGREEMENT This Joint Filing Agreement may be executed in separate counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. IN WITNESS WHEREOF, the parties have executed this Joint Filing Agreement on July 6, 2015. SCC Growth I Holdco A, Ltd. Sequoia Capital China Growth Fund I, L.P.] [Execution Version CONSORTIUM AGREEMENT among YAN TANG, MATRIX PARTNERS CHINA II HONG KONG LIMITED, SEQUOIA CAPITAL CHINA INVESTMENT MANAGEMENT L.P. and HUATAI RUILIAN FUND MANAGEMENT CO., LTD. Dated as of July 6, 2015 Execution Version TABLE OF CONTENTS ARTICLE I HOLDCO OWNERSHIP; ADDITIONAL CONSORTIUM MEMBERS 2 Section 1.01 Holdco Ownership and Arrangements 2 Section 1.02 Additional Consortium Members 2 ARTICLE] [June 23, 2015 The Board of Directors Momo Inc. th 20 Tower 2, Wangjing SOHO No. 1 Futongdong Street Chaoyang District, Beijing 100102 People’s Republic of China Dear Sirs: Mr. Yan Tang (“Mr. Tang”), co-founder, chairman and chief executive officer of Momo Inc. (the “Company”), Matrix Partners China II Hong Kong Limited (“Matrix”), Sequoia Capital China Investment Management L.P. (“Sequoia”)] [SCHEDULE 13D CUSIP No. 60879B107 Page 2 of 19 1. Names of reporting persons. I.R.S. Identification Nos. of above persons (entities only) SCC GROWTH I HOLDCO A, LTD. I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) 98-1141870 2. Check the appropriate box if a member of a group (see instructions) ¨ x (a) 3. SEC use only 4. Source of]