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.
---
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>