Lotti

Open-source private logbook for tasks, journaling and habits, with optional AI agents you approve.

Open sourceSelf-hostableHabit tracker and journaling apps

Verified facts: 4 of 4
Alternatives ranked: 4
Approved reviews: 0
Visits sent from here: 0

About Lotti

Lotti is a personal logbook that combines a daily journal, tasks with checklists and time tracking, habits and imported health data such as Apple Health, plus audio recordings that can be transcribed locally with Whisper. Its distinctive idea is a set of AI agents that read what you record and propose next steps or updates, which you approve before anything changes. Lotti has no AI service of its own: you connect providers you choose, such as OpenAI, Anthropic, Mistral or a local Ollama model, or switch AI off entirely. Data lives in local databases on your devices, there is no Lotti account or telemetry, and devices sync end-to-end encrypted through a Matrix homeserver you host or pick. It suits privacy-minded people who want journaling and self-tracking in one place. Lotti is free and open source under the GPLv3, with builds for macOS, Linux, iOS and Android; the Apple builds are distributed through TestFlight, and Windows needs building from source.

Best for: Privacy-minded self-trackers who want journal, tasks and habits in one local-first app.

What works

Local-first with end-to-end encrypted sync
Bring your own AI provider, local models or none
Journal, tasks, habits, health data and audio in one app

Why people leave

Sync requires a Matrix homeserver
iOS and macOS builds are on limited TestFlight invitations
No prebuilt Windows version

Top Lotti alternatives

See all 4

1
Day One
Polished, end-to-end encrypted journal with rich media, if you don't need tasks or AI agents.
68.8
2
Journey
Cross-platform journal with cloud sync on more devices, including Windows and the web.
64.8
3
jrnl
Plain-text command-line journal for people who want simple, local, scriptable entries.
61.8
4
Exist
Pulls in health, mood and habit data from many services to find correlations automatically.
59.4

Why people left Lotti

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Lotti: common questions

Is Lotti free?

Yes. Lotti is free, open-source software that you can host yourself.

Is Lotti open source?

Yes. The source code is on GitHub at matthiasn/lotti. You can also run it on your own server.

What platforms does Lotti run on?

Lotti is available for macOS, Linux, iOS and Android.

What are the best alternatives to Lotti?

The highest-ranked Lotti alternatives right now are Day One, Journey and jrnl. See the full ranked list for pricing, platforms and verified facts.

See all 4 Lotti alternatives

Lotti facts

4 of 4 verified

License: GPL-3.0; Checked Oct 30, 2026github.com(opens source in a new tab); “License: GPL-3.0 (GNU General Public License v3.0).”
End-to-end encryption: Yes, device-to-device sync; Checked Oct 30, 2026github.com(opens source in a new tab); “End-to-end encrypted sync between your own devices — servers only ever see ciphertext.”
Local AI: Optional; Checked Oct 30, 2026github.com(opens source in a new tab); “Local AI optional..”
AI approval: Agents propose, you approve; Checked Oct 30, 2026github.com(opens source in a new tab); “Agents read what you record and propose what to do next — you approve the changes.”