Both are ai visibility monitoringtools, and both have been checked field by field against their own sites. Below is where they actually differ — and where we couldn't establish a difference.
Obere Bahnzeile 13, 3680 Persenbeug, Austria (per OtterlyAI's own Imprint page; corroborated by Wikipedia and Austrian public-registry aggregators)
Where they differ
1 capabilitywhere one offers it and the other states it doesn't.
Prompt discovery✕No✓Yes
left column GrowByData · right column Otterly.ai
Every capability, side by side
CapabilityGrowByDataOtterly.ai
Monitors brand mentions✓Yes✓Yes
Tracks citations?Not published✓Yes
Sentiment analysis?Not published✓Yes
Competitor benchmarking✓Yes✓Yes
Prompt discovery✕No✓Yes
Share of voice✓Yes✓Yes
Recommends fixes✓Yes✓Yes
Writes content✕No✕No
Publishes content✕No✕No
Builds off-site citations✕No✕No
Does outreach✕No✕No
Generates schema / llms.txt?Not published✕No
Technical audit?Not published✓Yes
AI crawler analytics?Not published✓Yes
Traffic attribution?Not published?Not published
Revenue attribution?Not published✕No
A/B testing?Not published✕No
Geo segmentation✓Yes✓Yes
AI advertising?Not published✓Yes
Product catalogue optimisation✓Yes?Not published
Not published is not a no.Where a vendor never states whether it does something, we say so rather than printing a verdict we can't source — so an empty-looking row is a gap in their documentation, not a missing feature.