# Sonn

Sonn is a one-line terminal install that adds a persistent reasoning layer to Claude Code. It automatically captures project context, decisions, and boundaries across sessions — then reasons over that history before the agent acts, steering it away from mistakes it was about to repeat rather than retrieving notes after the fact. Everything is local-first: code and memory stay on the developer's machine, and generation runs through their own model credentials.

## Facts
- Category: Developer tools
- Platforms: macOS, Windows, other platforms
- Built for: developers
- Listed since: July 2026
- Approved tests: 1 (1 total)
- Link: https://sonn.dev

## FAQ
### Is Sonn legit?
Sonn was listed on IndieAppCircle in July 2026 by Aleksandar, who opened it to independent testers. 1 independent tester has used it since and had their feedback accepted by the maker. It is distributed through its own website at sonn.dev. IndieAppCircle is a peer feedback exchange, not a paid-review site: testers earn credits only for feedback the maker accepts, and nobody is paid to be positive.

### What platforms does Sonn run on?
Sonn runs on macOS, Windows and other platforms. The maker built it for developers.

### Is Sonn still looking for testers?
It is not in the feed right now, but it can still be tested directly for 5 credits per approved test.

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Full page: https://www.indieappcircle.com/apps/j57d1fzdpk1knsvh72c93z1vr18a7bzn