YJ Capital, San-In Chuo Television Broadcasting and Tanabe Corporation were among the investors in a round that almost doubled the app developer's total funding.

Japan-based app development services provider Monstar Lab has received $6.3m in a round backed by corporate investors including YJ Capital, the venture capital subsidiary of internet company Yahoo Japan.

The round also featured media company San-In Chuo Television Broadcasting, construction firm Tanabe Corporation, VC firm Fenox Venture Capital and Shinsei Corporate Investment, a subsidiary of financial services firm Shinsei Bank, as well as unnamed existing backers.

Monstar develops bespoke mobile apps and software products for clients, and specialises in areas…