Thrennel Explained

Most of us have the same problem. We save articles, bookmark videos, jot down half-finished ideas, and then watch them disappear into the same digital pile. When we want them again, they’re gone.

Thrennel, a new invite-only journaling app, tries to fix that without turning your personal notes into another cluttered workspace.

Two kinds of notes, kept apart

The idea is simple: keep what you think separate from what you save.

• Your journal holds your own thoughts.
• Your knowledge side holds articles, videos, pasted notes, and even text pulled from a photo of a whiteboard or book page.

Thoughts show up as dots; saved items appear as diamonds. You can look at either one alone or see how they connect.

Writing without the filing

Instead of forcing you to choose a folder first, Thrennel lets you write freely. Topics tend to sort themselves, and while you’re typing a new thought it can surface relevant notes you’ve already kept.

You can also ask a question of everything you’ve written and get an answer that points back to the specific entries it came from. Daily, weekly, and monthly summaries pull out action items as checkboxes, so reviewing your notes can turn into a short list of next steps rather than just another recap.

Private by design

Privacy is treated as a core feature rather than an afterthought:

• The journal is encrypted on the server with a key that only your password or recovery code can unlock.
• There are no ads, no analytics, and no tracking.
• AI features run first on the founder’s own machines with open-source models. Text only goes to an external service when those are offline.
• You can export everything at any time as an Obsidian vault, Markdown, or JSON.

Built for writing, not managing

Thrennel is a web app you can install on your phone. It imports Markdown, plain text, and Day One exports, and it includes voice dictation so you can talk instead of type after a run or a long day.

It’s built by one person and is currently free during an invite-only beta for adults 18 and older.

The approach won’t replace every note-taking tool. It’s deliberately narrow: a calm, writing-first place that tries to connect what you think with what you keep, without burying either one. For people who have already tried the usual apps and still end up with unread piles and scattered thoughts, that focused design may be the point.

You can request an invite at thrennel.com.