Webtoon is kind of similar. It has a diverse collection of comics in various genres. However, it might not have exactly the same features as Manga Rock.
In most cases, no. Manga Rock's in-app purchases often come with various restrictions and complications that make them not definitively redeemable. It could depend on a lot of factors like the version of the app, your account settings, and the specific purchase details.
The Blackrock novel app was a mobile novel reading app developed by Beijing Blackrock Information Technology Co., Ltd. It provided a wealth of novel resources, including suspense, social, urban, Xianxia, and many other types of novels. The user can read it online or download it offline. The app also had a personalised recommendation function, recommending other novels based on the user's reading habits. The Black Lava Fictions app updated very quickly. It could update the latest chapters of the novel simultaneously and provide reminders. It also had some special functions, such as reading plans, top-up gifts, invitations, and so on. Users could download and install the Black Lava Fictions app through application stores such as Pea Pod.
The Blackrock novel app was a mobile novel reading app developed by Beijing Blackrock Information Technology Co., Ltd. It provided a wealth of novel resources, including suspense, social, urban, Xianxia, and many other types of novels. The user can read it online or download it offline. The app also had a personalised recommendation function, recommending other novels based on the user's reading habits. The Black Lava Fictions app updated very quickly. It could update the latest chapters of the novel simultaneously and provide reminders. Users could download and install the Black Lava Fictions app through application stores such as Pea Pod.
I don't know for sure. It depends on the licensing and distribution rights. You could try looking directly on Manga Rock or checking with other manga enthusiasts who might have the answer.
No, Manga Rock is an illegal platform and doesn't have the legitimate right to offer 'A Silent Voice' manga. It's best to look for legal options to read it.