Most alternatives store your notes on their servers — or, at best, on a server you have to run yourself. That's not the only difference.
The question that ends most comparisons for confidentiality-bound professionals: can the company read what you wrote? For every tool below except WhosWhoZoo and Monica self-hosted, the answer is yes. Not because they're careless — because their architecture requires it.
WhosWhoZoo$39 once
ChatGPT memoryFree / $20/mo Plus
Where WhosWhoZoo loses
Honest tradeoffs. Choose the tool that fits your actual priorities.
Claude already has free memory
If you already use Claude, you might wonder why you'd need this at all. Claude's own memory is real and genuinely editable by Topic — but it lives on Anthropic's servers, trains on your conversations by default², has no per-person structure, and can't be exported. If convenience matters more to you than owning the file, Claude memory is free and already there. WhosWhoZoo trades that convenience for data that's actually yours.
Setup takes real effort
You need Cloudflare, Anthropic, and OpenAI accounts. The setup wizard walks you through it — paste a key, test it, next — but it's ~20 minutes, not 2. Those 20 minutes buy you API-key privacy, memory you explicitly approved, and notes that survive the app. ChatGPT memory is zero minutes — but so is your control over what it remembers.
No automatic enrichment
Dex and Clay pull LinkedIn, Twitter, and email data automatically. WhosWhoZoo doesn't — you write what goes in. That's the privacy model, but if passive enrichment is your priority, Dex is better at it.
Not in the App Store
Add WhosWhoZoo to your home screen from Safari or Chrome and it works exactly like a native app — your own icon, full screen, voice mode, handsfree sessions, everything. What you don't get is App Store discovery or automatic system updates. ChatGPT has a polished App Store presence if that distribution matters to you.
Solo developer project
There's one person building this. No team, no enterprise SLA, no 24/7 support desk. The flip side: if Hans disappears, your notes don't — they're in your own Cloudflare account. The tool's survival is structurally irrelevant to your data.
You manage the API bill
Anthropic, OpenAI, and ElevenLabs bill your accounts directly. At normal use it runs $1–3/month, but it's variable. Monica cloud and Dex have predictable flat monthly fees.
Monica for non-technical self-hosters
If you want self-hosted but don't need AI, Monica is mature, open source, and free. It handles contacts and reminders well. It just doesn't answer questions conversationally.
Pricing as of August 2026. Competitor pricing changes often — verify before purchasing.
¹ ChatGPT consumer accounts (free and Plus) may use conversations to improve OpenAI's models by default. Opt out under Settings → Data Controls → Improve the model for everyone. This does not apply to the Anthropic and OpenAI APIs, which are how WhosWhoZoo reaches Claude and GPT models — API traffic is not used for training.
² Claude Free, Pro, and Max consumer accounts (the Claude.ai product) train on your conversations by default as of October 2025 — opt-out is available in Settings → Privacy, though conversations flagged for safety review can still be used regardless of that setting. This is separate from the Anthropic API — see footnote 1.
Dex, Mem.ai, and Claude memory storing data on their servers is not a criticism — it's how these products are built. It only matters if cloud storage of your notes is professionally or personally disqualifying for you.