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A research notebook from Google. You add your own sources and it answers questions and builds summaries from them.
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Free Enough
This app has paid upgrades — but its free tier is the complete product. Most people who use it never feel the need to pay.
In-app purchases are Google AI plan subscriptions (Google AI Plus from $4.99 and Google AI Pro (5 TB) at $19.99) that raise usage limits and storage. The free tier is the complete product: notebooks, sources, questions and Audio Overviews all work without paying.
Transparency
✓ Works offline
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Reports go to a human review queue. No timeline promised — this is a small pilot, but every report gets read.
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