---
title: Onelog
status: coming soon
platform: iPhone, iOS 26+
url: https://onelog.page
built_with: [Swift, SwiftUI, App Intents, Claude Code]
---

# Onelog

> Log anything in one tap. A free iPhone app, local first and agentic first. The website is live, the app is on its way.

## What it does

Coffee, mood, pages read, water, runs: anything you want to track becomes a log you fill in one gesture. Yes or no, amounts, 0 to 10 ratings, text, or a voice memo transcribed on device.

- No account, no server: your data stays on your iPhone
- Widgets, Siri and App Intents, Apple Health, Apple Weather
- English and French

## Agentic first

Your logs are meant to be read by AI, on your terms. Onelog exports an open JSON format (`onelog/1`), can push to a signed webhook, and gives read-only access to AI agents. The website ships a prompt library to analyse your data with Claude or ChatGPT.

## Built with agents

Onelog is built with a structured agentic workflow: product docs, design system, decision records and verifiable feature criteria that the coding agent reads at every session, with hooks, rules, skills and sub-agents in the repo.

## Links

- Website: <https://onelog.page>
