The cleanest and most reliable method is also the simplest: subscribe to KineMaster Premium. When you upgrade to a paid plan, the app instantly stops adding the logo to your exports, so every project you finish comes out crisp and unbranded. This is the only route the developers themselves endorse, which means you won't risk corrupted files, broken features, or shady third-party apps.
Subscriptions are billed either monthly or annually, and the yearly option usually works out cheaper per month. Once you've paid, the change applies across all your projects, including ones you started before upgrading. There's no extra button to press and no setting to hunt down; the moment your account goes Premium, the KineMaster watermark simply disappears from future renders.
Beyond removing the logo, a paid plan unlocks the full asset library, premium effects, and higher-resolution exports. So while your main goal might be producing a video in KineMaster without a watermark, you also gain a range of creative tools that free users never see. For anyone editing regularly, the upgrade often pays for itself in both polish and convenience.