Publish one video to every account you run.
Derive Growth Lab is the web app our team and the creators we work with use to publish short-form video. Upload a finished clip, write the caption once, tick the accounts it should go to, and post — with each platform's own sharing options set deliberately, on the screen, before anything is uploaded.
One web app, built around a single rule: nothing is published until you have seen exactly what will be published and pressed Post.
One upload and one caption go to any mix of your connected Instagram, TikTok and YouTube accounts, each through that platform's official API.
The creator you are posting as, an audience you choose yourself, interactions off until you turn them on, commercial-content disclosure and the Music Usage Confirmation.
Every upload is previewable, and Growth Lab reads its real dimensions, duration and size — and warns if it is longer than your TikTok account allows.
Each destination reports separately: posted or failed, at what audience, with a link to the post and a plain-English next step when something goes wrong.
You connect each account yourself through the platform's own login, and you can revoke that access from inside the platform at any time.
When someone comments an agreed keyword on one of your Reels, Growth Lab replies under the comment and sends them the link they asked for.
Three screens, in order. These are real screenshots of the product, not mock-ups.
Upload a finished video, check the preview, and tick the connected accounts it should go to. Write the caption once.
For TikTok: who can view it, which interactions are allowed, and whether it is commercial content — each an explicit choice.
Agree to TikTok's Music Usage Confirmation directly above the button, post, and read the result for each platform.
You connect your own accounts. Growth Lab never posts to an account you have not connected yourself, and revoking access stops it immediately.
Reels published through the official Instagram Graph API, with per-account tokens the user grants and can revoke.
Connected with Login Kit and published with the Content Posting API's Direct Post, using the audience and interaction settings chosen on the sharing screen.
Shorts uploaded through the YouTube Data API with the title and visibility chosen at post time.
Stated plainly, because it is the part people most want to know about.
Growth Lab accounts are issued by invitation to our own team and to the creators who post with us. If you have been sent a sign-in code, sign in here. If you would like to talk to us about using it, get in touch.
Derive Growth Lab