Best work memory app
The short version: Opsis is the interface for your work. It knows what you're doing and helps right where you are, with a tap. It sits on top of every app you use, and it helps before you think to ask. That is the work memory that matters here: the brief, the thread and the last decision stay with the work, so you don't re-explain them to ChatGPT. It isn't a screen recorder. It only follows the apps you choose.
Fabric, Saner.AI, Lifestack and AI Context Flow show up on the same queries. They are different jobs. The table below uses only what their public sites say. If you want a second brain you fill by hand, or a planner, or a memory you paste into chat tools, pick the row that matches. If you want the work you already started to stay in place on Mac and Windows, that's Opsis.
How it compares.
Work memory tools, facts from their public sites
| Tool | What their site says it is | How context gets in | Mac and Windows desk work |
|---|---|---|---|
| Opsis | The interface for your work. Named sessions across the apps you share. Not a screen recorder. | Follows only the apps you choose, then helps in the app you're in, with a tap. | Yes. Free to start. |
| Fabric | A personal AI and home for files, notes, ideas and meetings, with an infinite cloud drive (fabric.so). | You save files, notes and meetings into Fabric. Their site describes an AI that knows that library. | They list web, mobile and desktop. You work inside Fabric's workspace. |
| Saner.AI | An AI personal assistant for ADHD. Notes, emails, tasks and meeting recaps in one place, with a chat assistant called Skai (saner.ai). | You write, import or email things into Saner. It organises notes and suggests tasks. | Their public site is a web product you go to. It does not claim to sit on top of every app on your Mac or PC. |
| Lifestack | A smart daily planner around sleep, recovery and focus. It drafts a schedule from energy and wearable data (lifestack.ai). | Calendars, health data and tasks you connect. Not a history of the work in your apps. | They list iPhone, Mac, Android and Chrome. Pick it for energy-aware planning, not for work memory. |
| AI Context Flow | Save context once and reuse it in ChatGPT, Claude, Gemini, Grok, Perplexity and MCP tools. Browser extension plus Memory Studio (plurality.network). | You save briefs, files and chat context into Memory Studio, then inject them into AI chats (Ctrl+I on their extension). | A Chrome extension and a web Memory Studio, plus MCP for coding tools. Not a Mac and Windows app that follows the work. |
Figures and shutdown dates come from the sources at the bottom, or from this site's own product copy. We don't invent competitor features.
Who it's for.
Anyone who pastes the same project into ChatGPT, and anyone comparing “work memory” tools who actually needs the thread of live work across apps, not a new notebook.
Your data.
Opsis isn't a screen recorder. It only follows the apps you choose. Private windows and password managers are never recorded. When assistance is on, content from those apps is processed in the cloud, encrypted in transit and at rest. There is zero data retention with our AI providers. You can pause, disconnect a source or delete your history whenever you like. Read the privacy policy · How Opsis handles data.
If the job is “don't re-explain this to ChatGPT”
AI Context Flow is built for that sentence inside chat windows: save the brief once, then pull it into ChatGPT, Claude or Gemini. Opsis is built for the work already happening in Docs, Word, Canvas, Slack and the rest. You can use both. One feeds the chat. The other keeps the assignment itself.
Fair split
Choose Fabric if you want a personal cloud and workspace you file things into. Choose Saner.AI if you want a notes, email and task assistant, including if ADHD is part of the brief (their positioning). Choose Lifestack if the problem is when you work, not what you were working on. Choose AI Context Flow if you live in chat tools and want portable prompt context. Choose Opsis if the work is already spread across apps on a Mac or Windows PC, and you want to pick it up without briefing anyone.
FAQ
Is Opsis a work memory app?
Yes, if work memory means the thread of your own work across the apps you share. Opsis is the interface for your work. It knows what you're doing and helps right where you are, with a tap. It isn't a screen recorder, and it only follows the apps you choose.
Will this stop me re-explaining my work to ChatGPT?
For the work Opsis already saw, yes: the brief, the thread and the decision are in the named session, and a tap brings them up in the app you're in. If you still want a blank-page chat, AI Context Flow or ChatGPT's own memory are the tools that carry context into that chat. Many people use both.
Does Opsis record my screen?
No. Opsis isn't a screen recorder, and it doesn't give you a replay of your day. It only follows the apps you choose, skips private windows and password managers, and turns what it sees into named work sessions.
Sources
- Fabric
- Saner.AI
- Lifestack
- AI Context Flow (Plurality)
- Opsis vs ChatGPT
- How to stop re-explaining your work to ChatGPT
Related questions
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