Mem Agent vs Notesium
Mem Agent
mem.aiNotesium
notesium.comSide by side
| Figure | Mem Agent | Notesium |
|---|---|---|
| Price from | $9/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| API | Yes | Yes |
| Plans published | 10 | 1 |
| Spec score · Personal Knowledge Management Software | 9.3 (#1) | 8.7 (#7) |
| API | Mem provides a REST API for creating, reading, searching and managing collections of notes. | The local REST API uses JSON and exposes endpoints to create, update, delete, retrieve and list notes. |
| Maker | The privacy policy identifies the maker as Mem Labs, Inc., doing business as Mem. | The site credits Alon Swartz in its copyright notice. |
| Platforms | Mem offers apps for iOS, Mac, and Windows, plus use in a web browser. | The maker says Notesium runs locally on Linux, macOS, and Windows. |
| Security | Mem’s security page says user content is encrypted in transit and at rest, Mem is SOC 2 Type II compliant, and content is unencrypted for AI processing by trusted third-party vendors. | The installation guide instructs users to verify downloaded binaries against published SHA-256 checksums. |
| What it does | Mem Agent builds a continuously updated picture of a user's tasks, projects and goals, then helps with follow-through. | Notesium is a local system for creating, storing and accessing linked Markdown notes. |
Plans
Mem Agent
- MemPriced on request
- Mem Plus$9 a month
- Mem Pro$29 a month
- Mem Pro 2×$49 a month
- Mem Pro 5×$99 a month
- Mem Pro 10×$149 a month
- Mem Pro 20×$199 a month
- Extra Usage$50 a month
- MemFree
- Mem FreeFree
In their own words
Mem Agent
Mem Agent is an AI thought partner for capturing ideas, meetings and research, then retrieving them when needed. Mem Chat can answer workspace questions, create or update notes, organize them and draft content using workspace context. Deep Search accepts natural-language descriptions of what a user wants to find. Voice Mode records and transcribes meetings or spoken thoughts into structured notes. The Chrome extension captures and summarizes webpages and YouTube videos, organizes clips into collections and lets users edit notes from its popup; it is currently available only for Google Chrome. Mem connects to Google Calendar and Microsoft Outlook, but only displays meetings with two or more guests. It can connect to Claude to search Mem knowledge, save conversations as notes, update documents and organize a workspace. The free plan includes 25 messages and 25 new notes per month, tracking for 25 notes, 15 open tasks and projects, and three Voice Mode hours. Mem Plus costs $9 a month. Content is encrypted in transit and at rest, but is unencrypted for AI processing by trusted third-party vendors. Mem supports one-click exports of notes and collections as Markdown files.