Introducing Tracebell: Sentry issues, triaged from your iPhone
Every developer who carries a pager — real or metaphorical — knows the moment: a Slack message or an email says something broke in production, and the first question is always the same. Is this bad? Answering it usually means finding a laptop, logging in, and digging through a dashboard, even though nine times out of ten the stack trace alone would have told you.
Tracebell is my answer to that moment. It's a native iPhone client for Sentry — unofficial, built on the public API — that gets the stack trace to you where you already are: on your phone.
What it does
- A bell for new errors. Connect a webhook from your own Sentry organization and your phone rings when things break. Everyone gets a heads-up for new issues and a weekly summary; Advanced delivers every event in real time, filtered to the event types, projects, and levels you care about.
- The whole issue, readable on a phone. Exception, frames with surrounding source lines, an "app frames only" toggle, breadcrumbs, request data, tags, and the event history of the issue.
- Triage in a tap. Resolve, archive, assign to a member or team, set priority, bookmark — from a swipe on the list or the detail screen.
- Your setup, not just sentry.io. US and EU regions are detected automatically, and self-hosted servers work too.
Free, and Advanced
The free app is a real client, not a teaser — and the free part stays free. Every organization your token can access, browsing, search, triage, releases with crash-free rates, plus a heads-up notification for new issues and a weekly summary. Tracebell Advanced covers what needs paid servers: real-time push for every event with event-type selection, home-screen widgets, Live Activity, and alternate app icons — for ¥500 a month, ¥4,000 a year with a 14-day free trial, or ¥9,700 once (US $2.99 / $24.99 / $99.99). If you just want to support development, there's a tip jar; tips unlock nothing.
If you just want to look around first, demo mode opens a fictional workspace with projects, issues, and stack traces — no account needed.
The privacy design
A tool that holds a token to your error data should be paranoid on your behalf. Tracebell stores your Sentry auth token only in the iOS Keychain on your device and talks to the Sentry API directly — your issues never pass through a server of mine. The push relay, the one server that exists, stores a device push token, your organization slug, your notification preferences, and a webhook secret. It never holds your token, and you can keep issue titles off it entirely: in private mode the notification extension fetches the content on-device. No ads, no analytics, no trackers. The details are in the privacy policy.
An honest word about "unofficial"
Tracebell is an independent app built by one person on Sentry's public API. It is not affiliated with, sponsored by, or endorsed by Functional Software, Inc., and Sentry is their registered trademark. If you need the official product, that's the Sentry web dashboard.
Get it
Tracebell is on the App Store for iPhone (iOS 26 or later), in English and Japanese. [App Store link to be added at launch.]
I'd love to hear what you think — email oikon48@gmail.com or use the feedback link in the app.