Mem
A notes app built around an AI agent that organises what you write on its own and surfaces related past notes automatically when something new connects to them.
What you'd use it for
Keeping a personal notebook that files and links itself, then nudges you about the tasks buried inside it, instead of you doing the filing and remembering by hand.
- Write a note and have the agent file it and link it to related past notes on its own
- Ask the agent a question in plain language and get an answer sourced from your own notes
- Turn a note into a tracked task or project, with an open-task count, from the free tier up
- Dictate a voice note and have it transcribed and structured into a note
- From Pro up, set a custom routine or connection so the agent acts on a recurring basis rather than only recording
The verdict
Mem is a personal notes app with an agent layered over it -- it files new notes, links them to what you have already written, tracks them as tasks, and from Pro up runs routines and connections against them. The vendor's own homepage now leads with "your AI chief of staff" rather than "self-organising notes," but the mechanics have not changed underneath that framing -- it still needs a real backlog of your own notes before it has anything to link or follow up on. It suits someone who already writes enough to be worth automating, not someone starting a notebook from a blank page.
What it costs
| Tier | Price | For | Includes |
|---|---|---|---|
| Free | $0/mo | Getting started with the Mem Agent. | 25 messages, 25 notes/mo, task tracking for 25 notes, 15 open tasks, 3 hours voice mode. |
| Plus | $9/mo | Someone needing more daily notes and conversations than Free allows. | 50 messages, 50 notes/mo, task tracking for 50 notes, 25 open tasks, 10 hours voice mode. |
| Pro | $29/mo | Someone wanting the agent to follow up proactively, not just record. | 100 messages, 100 notes/mo, 1 custom routine, 1 connection, 25 hours voice mode. |
| Pro 2x | $49/mo | Busier personal workflows needing double the Pro allowance. | 200 messages, 200 notes/mo, 2 routines, 2 connections, 50 hours voice mode. |
Read from Mem's own pricing page on 25 Sep 2026. Vendors change prices without notice.
What you need to start
- A Google account or email address to sign up; no credit card for the free tier
- Web, Mac or Windows to use it day to day -- there is no Android app
- A Pro plan or above ($29/mo) before custom routines or external connections do anything
A couple of minutes to a working free account; expect an afternoon of real note-writing before the automatic linking and task follow-up have enough to work with.
Your first run Signing up and writing your first note takes a couple of minutes, but the actual pitch -- notes linking themselves and tasks getting followed up -- only shows itself once you have fed the agent several real notes over a few days.
Where it breaks
Every tier caps both messages and notes per month rather than offering one unlimited allowance, which makes Mem more expensive per note than a plain notes app the moment you use it heavily.
Browser and mobile app, backed by the OpenAI Startup Fund. Higher tiers (5x, 10x, 20x, up to $199/mo) scale the same allowances further for people running multiple projects or automations through Mem.
First entry in this reference. There is no previous check to compare it against.
When not to use it
Not for anyone who wants a quiet personal notebook with no agent chatter -- the free and Plus tiers cap you at a handful of messages a month, which punishes exactly that light, occasional use. Skip it too if you are on Android; there is no app for it, only web, Mac and Windows.
Mem’s pitch is that a notes app shouldn’t require you to organise it. Write a note, and the agent files it, links it to related past notes, and — on the paid tiers — tracks it as a task and follows up. The comparison worth making is against Reflect, which takes the networked-notes idea in a more manual, backlink-first direction; Mem leans further into letting the AI do the filing work you’d otherwise do yourself.
What “connections” and “routines” actually buy
Starting at Pro, Mem adds custom routines and external connections — small automations tied to your notes rather than passive storage. That is the point where this stops being a notes app and starts behaving like a lightweight personal assistant: it can be told to do something recurring with what you write, not just remember it.
The real cost driver is messages, not storage
Every tier is capped by monthly messages and notes, not by how much you’ve stored historically — so a heavy user who writes and converses with the agent daily will outgrow Free and Plus quickly, while someone using it as a light personal notebook may never need to pay at all.
Where this doesn’t fit
If your notes are for one person and don’t need an agent asking follow-up questions or tracking tasks, this is more product than the job requires — a plain notes app costs less and does the storage-and-search job just as well. Mem earns its price specifically for someone who wants the notes to do something back.
Alternatives
Meetings & notesAppsReflect
Networked note-taking that links related notes automatically, with a built-in AI assistant that drafts, summarises and answers questions from your own notes.
Assistants & chatAppsNotebookLM
Upload your own documents and ask questions answered only from them, with citations back to the exact passage, plus generated audio summaries of the material.
Meetings & notesAgentsFellow
A shared meeting workspace that builds the agenda before a call, takes AI notes during it, and tracks whether the follow-up actions actually got done afterward.
Get Mem
Buying the tool is not the hard part.
The ebook is about what to hand over, in what order, and how you find out when it goes wrong. One payment, no subscription.