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Hey HN, I built Reyn - which I like to describe as "granola but for everything". You're probably thinking another screen capture AI tool (which is true). Same as always, the biggest question that comes up is privacy, so I'll talk about that first1. raw screen data is never stored in the cloud
2. user controlled filters are granular to the point that you're able to configure specific apps, windows, websites, or even keywords to be discarded immediately (once again never leaving your mac) and never captured down the pipelineI personally built it because I find it useful and always had the problem of organizing my day (not note taking or task management), as well as sharing context on things that just happened to go undocumented throughout my day. As I was building it I decided to go even further and see if I could collect useful insights and find room for improvements in my day to day workflow.This led to the current version of Reyn and its differentiating factor being the fact that it has a proactive layer. Most tools in this space are reactive - you ask, they retrieve. Reyn surfaces insights on its own and sends a daily recap of what you worked on, what's still open, and what deserves attention. The journal feature also lets you search across basically anything you've done on your Mac.The proactive insights work by first having you configure what your ideal workday looks like — whether that's hours worked or the type of work being done. We have a few broad categories that tasks fall under, with more customization coming.Current integrations:Obsidian (available now, improvements in progress)
Gmail, calendar, web search via a floating window with some agentic functionality
Notion (coming soon)
BYOK for LLM API requests (on the roadmap)
... and moreIt's still early, but the journal and insights features are the strongest parts right now.
Would love some feedback especially on the privacy model. My personal take - I think with enough safeguards in place, the data aggregated about your work is fully in your control. A lot of these data sources already store your data. If you're using Notion, Claude, or just browsing a website, that data is already being stored somewhere. Reyn is just aggregating it and putting it to work for you.Happy to answer any questions about how it worksusereyn.com (public beta)
Show HN: Reyn – local-first AI that journals and recalls your work
Described as 'granola but for everything,' it's a privacy-focused screen capture AI tool that organizes the day, shares context, and proactively identifies workflow improvements, differentiating itself from reactive retrieval tools.
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AI Executive Synthesis
Described as 'granola but for everything,' it's a privacy-focused screen capture AI tool that organizes the day, shares context, and proactively identifies workflow improvements, differentiating itself from reactive retrieval tools.
Reyn addresses the pervasive challenge of knowledge workers managing undocumented daily activities and context. Its local-first, privacy-centric approach for screen capture and journaling directly tackles a major user concern in this category. The proactive insights and daily recaps differentiate it from purely reactive search tools, aiming to improve workflow efficiency and self-awareness. Integrations with tools like Obsidian, Gmail, and Notion position it as a central hub for personal knowledge management and productivity. For B2B SaaS, this type of tool offers significant value in improving individual and team productivity, context sharing, and potentially identifying organizational inefficiencies. The 'BYOK for LLM API requests' roadmap item indicates a strategic move towards enterprise-grade flexibility and data control.
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Deep-Dive FAQs
What is Reyn – local-first AI that journals and recalls your work?
Reyn – local-first AI that journals and recalls your work is analyzed by our AI as: Described as 'granola but for everything,' it's a privacy-focused screen capture AI tool that organizes the day, shares context, and proactively identifies workflow improvements, differentiating itself from reactive retrieval tools.. It focuses on Reyn addresses the pervasive challenge of knowledge workers managing undocumented daily activities and context. Its local-first, privacy-centric ap...
Where did Reyn – local-first AI that journals and recalls your work originate?
Data for Reyn – local-first AI that journals and recalls your work was aggregated directly from the Hacker News community ecosystem, representing raw developer and early-adopter sentiment.
When was Reyn – local-first AI that journals and recalls your work publicly launched?
The initial public indexing or launch date for Reyn – local-first AI that journals and recalls your work within our tracked developer communities was recorded on June 18, 2026.
How popular is Reyn – local-first AI that journals and recalls your work?
Reyn – local-first AI that journals and recalls your work has achieved measurable traction, logging over 5 traction score and facilitating 0 recorded discussions or engagements.
Which technical categories define Reyn – local-first AI that journals and recalls your work?
Based on metadata extraction, Reyn – local-first AI that journals and recalls your work is categorized under topics such as: local-first AI, journals and recalls, raw screen data is never stored in the cloud, user controlled filters.
How does the creator describe Reyn – local-first AI that journals and recalls your work?
The original author or development team describes the product as follows: "Hey HN, I built Reyn - which I like to describe as "granola but for everything". You're probably thinking another screen capture AI tool (which is true). Same as always, the biggest question that c..."
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Discovery Source
Hacker News Aggregated via automated community intelligence tracking.
Tech Stack Dependencies
No direct open-source NPM package mentions detected in the product documentation.
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Deep Research & Science
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