iSyslog
Karoly Nyisztor Developer Tools iPhoneiPadiPod touch
iSyslog is a free Developer Tools app for iPhone and iPad by Karoly Nyisztor. Requires iOS 17.0. Updated October 26, 2026.
- Price
- Free
- on the App Store
- Size
- 6 MB
- Age 4+
- Updated
- Oct 26
- 2026 · v3.1
Screenshots
About iSyslog
iSyslog opens log sessions shared from apps built with iSyslogKit, the free, open-source in-app log console for iOS developers. When a tester runs into a bug, they tap Share in the app's log console and send the session by AirDrop, Mail or Messages. Open it in iSyslog and see exactly what happened: every message with its severity, subsystem and category, plus the app build, device and OS it came from. FEATURES • A built-in guide to using iSyslog and adding iSyslogKit to your app" • Severity at a glance: a chart and counts for faults, errors, notices, info and debug messages • Zero in on problems: show only errors and faults with one tap • Search across messages, subsystems and categories • Filter by subsystem, and hide Apple framework messages • Session info: app version and build, device model, OS version and time span • A library of every session you've received • Designed for iPhone, iPad and iPhone Duo, in light and Dark Mode • Includes a sample session, so you can explore right away FOR DEVELOPERS Add iSyslogKit to your app with Swift Package Manager: github.com/nyisztor/iSyslogKit. It captures your app's Logger and os_log messages and print output in Debug and TestFlight builds, gives testers an in-app log console, and lets them share sessions with one tap. It uses public APIs only, and captures nothing in App Store builds by default. PRIVACY iSyslog doesn't collect any data. Sessions you open stay on your device until you delete them.
What’s new
Version 3.1 · Updated October 26, 2026
New to iSyslog, or setting it up for your team? A welcome screen now explains what iSyslog is for, and the new How It Works guide shows how to get sessions from testers and how to add the free iSyslogKit package to your own app. • Welcome screen on first launch • How It Works guide: using iSyslog, and adding iSyslogKit step by step, with code • A link to iSyslogKit on GitHub in the … menu • Fixed: a shared file could be lost if iSyslog couldn't save it • Fixed: a received session could disappear after relaunching the app • Fixed: two different sessions from the same app could be mistaken for one
App privacy
The developer, Karoly Nyisztor, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to iSyslog
Looking for apps like iSyslog? Here are 6 similar apps on the App Store. The highest rated is Heeler for herdr (5.0/5), and all 6 are free to download.
-
Logfile Expert
-
Clayshell
-
TermX SSH
-
LogCat Analyzer: Debug Toolkit
1.0
-
LogShow - Log Viewer & Parser
4.0
-
Heeler for herdr
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| iSyslog | – | Free | October 26, 2026 | |
| Logfile Expert | – | Free | Mar 23, 2026 | Compare |
| Clayshell | – | Free | Oct 11, 2026 | Compare |
| TermX SSH | – | Free | Jun 25, 2026 | Compare |
| LogCat Analyzer: Debug Toolkit | 1.0 / 5 (1) | Free | Aug 11, 2026 | Compare |
| LogShow - Log Viewer & Parser | 4.0 / 5 (3) | Free | Apr 23, 2026 | Compare |
| Heeler for herdr | 5.0 / 5 (13) | Free | Oct 25, 2026 | Compare |
Compare iSyslog with the top alternatives: ratings, updates, ASO score and keyword gaps →