End-of-video 'respond' prompt on Loom: +13% comments
Commentary byLiftArchiveOur analysis, not theirsLoom replaced a generic call to action at the end of shared videos with a prompt to respond to the sender, and comments across all Loom videos rose 13%.
Responding then leads the viewer into sign-up. Loom made the change; it was published as a Growth.Design case study, and it is a before-and-after comparison, not a reported split test.
- Comments left on Loom videos: up 13% across all videos, per Growth.Design.
- The metric is comments, not sign-ups. No sign-up figure was shared.
- No sample, test method or time frame was given.
The change
The end-of-video sign-up button becomes a prompt to reply to the sender.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
When a shared video ended, viewers saw a generic call to action to get Loom for free.
Variant
When the video ended, viewers were invited to reply to the sender, with pre-filled text to make starting easy. Replying then led into sign-up.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Someone who just got a video from a colleague wants to answer them, not buy software. The prompt matches that goal.
- Pre-filled text removes the blank-box problem of starting a reply.
- Growth.Design notes the old button repeated a sign-up link already shown several times in the interface.
Caveats: This is a before-and-after change with no stated test method, sample or source for the number. The reported gain is in comments, not sign-ups.
Who ran it
Loom ran this test for an async video messaging SaaS and published the results (Growth.Design case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Loom →
How to run this test on your site
- Hypothesis
- If we replace the generic sign-up prompt shown to recipients with an invitation to respond to the sender, then more recipients will engage because it matches what they came to do.
- Primary metric
- Share of recipients who respond
- Guardrails
- Recipient sign-up rate
- Spam or low-quality replies
- Sender retention
- Who should test it
- SaaS products where users share content with non-users, such as video, docs or design files. It fits less where recipients have no natural reason to reply.
Questions
Why not ask viewers to sign up directly?
A viewer's immediate goal is to react to the person who sent the video.
Letting them do that first gives a reason to sign up that a generic button lacks.
Does more engagement mean more sign-ups?
Not necessarily. Loom's reported gain was in comments, so track sign-ups separately if that is your goal.
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