Comparison
Monica vs Dex: Open Source or Mobile-First?
Monica vs Dex compared: open-source, self-hosted relationship tracking vs a polished LinkedIn-centric mobile CRM — plus a third option for pure recall.
Monica and Dex are both personal CRMs, but they make opposite bets on control versus convenience. Monica is open-source and can be self-hosted, which means you own your data outright and can shape the system to fit your life. Dex is a managed, mobile-first product that connects to LinkedIn and handles the infrastructure for you. Choose Monica if you value ownership and tinkering; choose Dex if you value polish and want it to just work.
There is also a third path worth naming up front, for people whose real need is recall rather than relationship administration.
Monica: control and ownership
Monica started as an open-source project for keeping track of the people in your life, often the personal side as much as the professional.
- Open-source code you can inspect and self-host
- Detailed records: relationships, family, important dates, gifts, activities
- A hosted option exists, but self-hosting gives full data ownership
- Strong for people who want control and do not mind setup
The trade is effort. Self-hosting means you maintain the server, updates, and backups yourself, and the interface is more functional than glossy.
Dex: convenience and mobile polish
Dex is a commercial product built for professionals who want to maintain a network without managing infrastructure.
- Polished iPhone and browser experience
- LinkedIn sync and contact import
- Keep-in-touch reminders and clean timelines
- Strong for people who want it managed and ready to use
The trade is control. Your data lives in a hosted service, and you accept its model in exchange for not having to run anything.
Trade-offs at a glance
| Dimension | Monica | Dex |
|---|---|---|
| Hosting | Self-host or hosted | Fully managed |
| Setup effort | Higher | Low |
| Platform | Web-first | Mobile-first |
| Privacy model | You own the server | Trust the provider |
| Best for | Tinkerers, data owners | Busy professionals |
How to choose
Weigh the two bets honestly.
- If you want to own your data and are comfortable self-hosting, Monica rewards that.
- If you want a clean mobile app and zero infrastructure, Dex is easier to live with.
- If you track the personal side of life in depth (birthdays, family, gifts), Monica’s data model is richer.
- If your network is mostly professional and LinkedIn-centered, Dex fits more naturally.
For the foundations of what a personal CRM even is, see what is a personal CRM, and the personal CRM hub lays out the full landscape.
The third path: recall, not administration
Both Monica and Dex are relationship administration tools. They hold structured records and help you maintain them. But administration is not the same as recall, and many people who try either tool discover their actual problem is simpler: they cannot remember what someone told them.
Dinner with Aarav. Left consulting to start a B2B payments company, still pre-revenue but two LOIs signed. Stressed about a co-founder disagreement on equity. Wife expecting their first in autumn. Wanted intro to anyone who’s split founder equity cleanly.
If that kind of context is what you keep losing, you do not need a fuller record or a self-hosted server. You need fast capture and grounded recall. A memory-first app does less administration and more of the one thing that matters before the next conversation.
The distinction is practical. Monica wants you to fill in fields; Dex wants you to maintain cadences. Both assume the value is in the structure. A memory-first app assumes the value is in what you actually said, so it gets out of the way at capture and shows up when you are about to see the person again. Less to maintain, more to recall.
Key takeaway: Choose Monica for ownership and self-hosting, Dex for managed mobile polish; if your real gap is recalling what was said rather than maintaining records, a memory-first app is the better fit than either.
FAQ
Is Monica free?
Monica’s code is open-source, so self-hosting is free aside from your own server costs. There is also a paid hosted plan if you would rather not run it yourself. Dex, by contrast, is a paid managed service.
Which is better for keeping in touch with old friends?
Monica’s data model handles the personal side, like birthdays and family, in more depth, which suits friends and family. Dex is tuned more for professional relationships through its LinkedIn-centric design.
Do I need technical skills to use Monica?
Self-hosting Monica requires comfort with servers, updates, and backups. If you use its hosted version, the technical burden is much lower and closer to using any managed app.
If you read that dinner note and recognized your own problem, Intriq is a private, iPhone-first relationship memory app focused on capture and recall. For the alternative-by-alternative view, see the Monica alternative and Dex alternative articles.