Maximem Vityvs Mem0 OpenMemory vs Supermemory Nova

A detailed, side-by-side comparison of the top AI memory Chrome extensions: setup, platform support, privacy, memory depth, and pricing.

Best Partial / Limited No / Not supported

Setup and Onboarding

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Configuration required
Best None (zero-config)
Partial Minimal; Claude requires Ctrl+M activation per session
Partial MCP setup, account linking
API keys needed
Best No
Best No
Partial No (but MCP config needed)
Guided onboarding
Best Yes (walkthrough)
No No (self-directed)
No No (no built-in tutorials)
Technical knowledge needed
Best None
Partial Low
Partial Low to medium
Per-platform setup
Best None (all platforms auto-enabled)
Partial Per-platform quirks (Claude manual, Perplexity buggy)
Partial Per-app MCP configuration
Time to first memory
Best Immediate (starts learning from first conversation)
Partial Immediate (fact extraction begins on supported platforms)
No Manual (you must save something first)

Platform Support

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
ChatGPT
Best Yes (auto)
Best Yes (auto)
Partial Yes (via MCP)
Claude
Best Yes (auto)
Partial Partial (manual: button or Ctrl+M each time)
Partial Yes (via MCP)
Gemini
Best Yes (auto)
Best Yes (auto)
No Not confirmed
Perplexity
Best Yes (auto)
Partial Yes (auto, but buggy per user reports)
No Not confirmed
DeepSeek
Best Yes (auto)
No Not confirmed
No Not confirmed
Grok
Best Yes (auto)
Best Yes (auto)
No Not confirmed
GenSpark
Best Yes (auto)
No Not confirmed
No Not confirmed
Manus
Best Yes (auto)
No Not confirmed
No Not confirmed
Google AI Search
Best Yes (auto)
No Not confirmed
No Not confirmed
Parallel Web Systems
Best Yes (auto)
No Not confirmed
No Not confirmed
Total auto-supported
Best 10
Partial 4 auto + 1 manual
No 2 via MCP

User Experience Model

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
UX for usage
Best Proactive suggestions as you type
Partial Auto-inject on most platforms
No Manual save and search
Memory capture method
Best Automated (from conversations automatically)
Partial Automated (fact extraction from conversations)
No Manual (you click to save content)
How memories reach your AI apps
Best Suggestions appear in real time; you approve each one
Partial Auto-injected into conversations (no approval)
No You search, find, and bring memories into conversation
User consent per suggestion
Best Yes (you review and decide)
No No (auto-injected without approval)
Partial N/A (fully manual)
Risk of unwanted context injection
Best None (you review everything)
Partial Medium (auto-inject can be wrong or stale)
Partial Low (you choose what to use)
Suggestion speed
Best Milliseconds
Partial Varies by platform
No Depends on search query
Full control over what AI sees
Best Yes (nothing injected without consent)
No No (auto-inject decides for you)
Partial Yes (but requires manual effort)

Memory Types and Depth

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Facts (name, location, job)
Best Yes
Best Yes
Partial Yes (from saved content)
Preferences (communication style, tone)
Best Yes
Partial Limited
Partial Limited
Emotions
Best Yes
No No
No No
Episodes (narrative context of projects, events)
Best Yes
No No
No No
Knowledge and expertise areas
Best Yes
Partial Limited
Partial Yes (via saved documents)
Profile building
Best Yes (comprehensive, multi-dimensional)
Partial Yes (fact-based only)
Partial Yes (from saved content)
Content types captured
Best Conversations across AI apps
Partial Facts extracted from conversations
Partial Links, chats, PDFs, images, videos, documents (manually saved)
Visual memory graph
Best Yes
Partial Yes (dashboard)
Best Yes (knowledge graph)

Auto-Sync and Continuous Learning

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Auto-sync from ongoing conversations
Best Yes (with consent)
Partial Yes (auto-extraction)
No No (manual save only)
Self-learning / memory consolidation
Best Yes (merges related context, strengthens relevant memories, de-prioritizes stale ones)
No No (static fact store; old and new facts coexist equally)
Partial Limited (temporal forgetting of unused memories)
Conflict resolution
Best Yes (memories evolve as preferences change)
No No (new info conflicts with old; no resolution mechanism)
No Not applicable
Feedback loop
Best Yes (improves from your corrections and input)
No No
No No
Memory evolution over time
Best Active (gets sharper with use)
No None (same quality from day 1 to day 365)
Partial Passive (unused memories fade)
Respects incognito browsing
Best Yes (explicitly never captured)
No Not specified
No Not specified

Applications Ecosystem and Integrations

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
App ecosystem built on memory
Best Yes (WaitPro, Echo, more coming)
No No
No No
Memory as a platform
Best Yes (unified memory layer powers multiple apps)
No No (standalone browser utility)
No No (connectors aggregate content, don't power apps)
External connectors
Partial Via ecosystem apps
No None (extension only)
Best Google Drive, Notion, OneDrive
MCP support
Partial Launching soon
Best Yes (OpenMemory MCP server)
Best Yes (MCP integration)
Dashboard for memory management
Best Yes
Partial Yes (but syncing between extension, MCP, and web dashboard is unreliable)
Best Yes (Nova web app)

Privacy and Data Security

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Data storage architecture
Best Encrypted cloud vault
Best Local-first (browser storage)
Partial Cloud (encrypted in transit and at rest)
Can the company read your data?
Best No (vault inaccessible to Maximem)
Best No (stored locally on your device)
Partial Likely (processed server-side)
End-to-end encryption
Best Yes
Best N/A (data never leaves device)
No Not explicitly mentioned
Data used for model training
Best No (explicitly stated)
Best No (local-first)
Partial Not sold, but processed by third-party AI
Incognito conversations
Best Never captured (explicit policy)
No Not specified
No Not specified
Data export and deletion
Best Full user control
Best Full user control
Partial GDPR/CCPA compliant
Memory portability across devices
Best Yes (cloud-synced, encrypted)
No No (local storage; switch computers and memories are gone)
Best Yes (cloud-based)

Reliability

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Chrome Web Store rating
Best 5 / 5
Partial 3.7 / 5
Best 4.6 / 5
Known issues
Best None reported
No Extension, MCP, and playground memories don't sync reliably; Perplexity integration problematic; small-screen display issues
No 404 errors; memories stuck queued for 3-4 days; Arc browser compatibility broken
Can you edit saved memories?
Best Yes (full control to include, edit, or remove)
Best Yes (via dashboard)
No No (must create new entries; cannot modify after saving)
Documented outages
Best None reported
Best None reported
No Oct 2025 (28-min cascading failure); March 2026 (single query consumed 95% of DB runtime)

Pricing

Feature
Maximem Vity
Mem0 OpenMemory
Supermemory Nova
Free tier
Best Full extension free until 15th April, 2026
Best Full extension, free
No 10 memories
Paid tier
Partial Coming soon
Partial API: 9/mo (Starter), $249/mo (Pro)
Partial $9/mo for 500 memories (limited to first 100 users)
Memory cap on free
Best Not specified
Best 10,000 memories (API tier)
No 10 memories
Memory cap on paid
Partial N/A
Best 50,000+ (API tier)
Partial 500 memories

Last updated: April 2026. All data sourced from Chrome Web Store reviews, Hacker News discussions, product documentation, and community feedback. Feature availability and pricing may change.

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Maximem Vity supports 10 AI platforms, captures rich memory types, and puts you in full control. Free to start.

Frequently Asked Questions

Maximem Vity is the highest-rated AI memory Chrome extension with a 5/5 rating on the Chrome Web Store. It supports 10 AI platforms automatically (including ChatGPT, Claude, Gemini, Perplexity, DeepSeek, and Grok), requires zero configuration, and gives you full control over what context reaches your AI apps.

Maximem Vity gives you proactive memory suggestions that you approve before they reach your AI, while Mem0 auto-injects context without your consent. Maximem Vity supports 10 platforms automatically versus Mem0's 4 auto + 1 manual. Maximem Vity also captures richer memory types (emotions, episodes, preferences) and includes self-learning that improves over time, while Mem0 stores static facts that don't evolve.

Maximem Vity automatically captures memories from your AI conversations across 10 platforms, while Supermemory requires you to manually save content and only supports 2 platforms via MCP. Maximem Vity provides real-time proactive suggestions in milliseconds, while Supermemory requires you to search for and retrieve memories yourself.

Maximem Vity stores your data in an encrypted vault that is inaccessible to Maximem, with explicit policies against model training and incognito capture. Mem0 OpenMemory stores data locally in your browser (private but not portable across devices). Supermemory processes data server-side with third-party AI, with no explicit end-to-end encryption mentioned.

Yes. Maximem Vity offers broader platform support (10 vs 5), richer memory types, user-controlled suggestions instead of auto-injection, self-learning memory that improves over time, and a higher Chrome Web Store rating (5/5 vs 3.7/5). Maximem Vity also syncs memories across devices via encrypted cloud, while Mem0's local storage means you lose memories when switching computers.