# iSyslog — App Log Analysis & Reporting > System log monitoring, analysis, and reporting tool for iOS devices. (iPhone/iPad app by Karoly Nyisztor.) - Source: https://appshunter.io/ios/app/isyslog/id468155763 (this page in markdown: same URL + `.md`) - Developer: [Karoly Nyisztor](https://appshunter.io/developer/329758641) - Category: Developer Tools, Utilities - Price: Free - Age rating: 4+ - Requires: iOS 17.0 · 6 MB - Languages: American English - Released: 2011-10-04 - Data updated: 2026-10-30 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/isyslog/id468155763/reviews.md ## What is 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. ## Key features - Display all log messages - Organized and comprehensible interface - Filter processes and messages - Graphical log statistics - Share logs - Detect crashes and issues - Analyze system state ## Is iSyslog safe? Not enough ratings yet to assess iSyslog. ## Is iSyslog legit? iSyslog appears to be a legitimate app. The AppsHunter Legitimacy Score for iSyslog is 90 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 16) All indexed reviews: https://appshunter.io/ios/app/isyslog/id468155763/reviews.md ### 1/5 — Shows nothing *2016-12-13* Don't know why it don't show anything at all and there is no settings **Developer response:** Hello, I assume you’ve got iOS 9 or newer. Quoting from the app’s description: *** Please note that iSyslog no longer works on iOS9 and newer versions. Get the app only if your device is running prior versions of iOS. *** ### 1/5 — Shows nothing at all. *2016-11-02* When I open this app, I am greeted with a graphic header saying "showing all processes and logs" and a blank gray screen. Somewhat underwhelmed. **Developer response:** Hello, I assume you’ve got iOS 9 or newer. Quoting from the app’s description: *** Please note that iSyslog no longer works on iOS9 and newer versions. Get the app only if your device is running prior versions of iOS. *** ### 5/5 — Great *2016-05-16* Very nice application for iPhone users. **Developer response:** Thanks a lot! I'm glad you like the app. ### 1/5 — Doesn't work *2016-04-20* Does nothing don't buy **Developer response:** Hello, I assume you’ve got iOS 9 or newer. Quoting from the app’s description: *** Please note that iSyslog no longer works on iOS9 and newer versions. Get the app only if your device is running prior versions of iOS. *** ### 5/5 — Helps figure out what is misbehaving *2016-03-14* Wonderful - one of a kind on the AppStore. Helped me quickly determine and isolate cause of my iPhone's failure to back up even when Apple Support could not. Update: iOS 9 prevents this app from working. So sad, because iSysLog was very very helpful. **Developer response:** I'm glad it helped you find the issue with your backup back then. Indeed, iSyslog no longer works on iOS9 and newer versions. Unfortunately, I haven't found a way to fix it yet. ### 1/5 — Waste of time *2015-08-31* A big waste of money didn't see where this done anything for me. **Developer response:** Hello, I assume you’ve got iOS 9 or newer. Quoting from the app’s description: *** Please note that iSyslog no longer works on iOS9 and newer versions. Get the app only if your device is running prior versions of iOS. *** ### 5/5 — App Ver 1.4 Crashes at Startup *2015-03-01* On IOS 6.1.6 on an iPod Touch 4th generation the updated app ver 1.4.1 no longer crashes and the App is working as well as can be expected, considering Apple's restrictions with App Log information. iSyslog is providing all the information that I need. **Developer response:** Cool, I'm happy the update fixed the crash. Would you please update the review's subject? Thanks! ### 5/5 — Thank you! *2014-11-15* I know nothing about crash logs but I needed one and I got it no problem on the first try.I recommend! ### 3/5 — Phone hacked *2014-04-09* Lots of background noise and voices ### 2/5 — Was a useful app but AVOID now *2013-09-30* This was a pretty useful app under iOS 6, but it cannot show sys logs under iOS 7. The developer updated the app comments to say it doesn't work for iOS 7, but doesn't say he's working on an iOS 7 update. I suspect that means he's not. There are other apps that show system logs (like Sys Status, which was updated almost immediately) so look elsewhere. **Developer response:** I had fixed the app and it worked until iOS9 came out. Unfortunately, iSyslog no longer works on iOS9 and newer versions. And there's no way to fix this. No other developer can solve this either. ## Frequently asked questions about iSyslog ### Does iSyslog work on iOS 9 and newer? No, iSyslog no longer works on iOS 9 and newer versions. It is only compatible with iOS versions prior to iOS 9. ### What is the rating for iSyslog? iSyslog has a rating of 2.3 stars from 6 ratings. ### Is iSyslog free to download? Yes, iSyslog is available for free. ### What devices support iSyslog? iSyslog supports iPhone, iPad, and iPod devices. ### When was iSyslog last updated? The latest version of iSyslog was last updated on August 5, 2015. ### What is the age rating for iSyslog? iSyslog has an age rating of 4+. ### Can iSyslog help developers find bugs? Yes, iSyslog can help developers by displaying log messages, identifying crashes, and providing exception call stacks which are useful for spotting root causes of problems in code. ### How does iSyslog present log information? iSyslog visualizes all messages generated by apps and processes in a polished, intuitive interface. It offers graphical log statistics and an analytical view grouped by severity. ## Version history (last 5 releases) ### 3.1 — 2026-10-26 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 ### 3.0 — 2026-10-22 iSyslog is back, completely rebuilt. Modern iOS no longer lets apps read the system log, so iSyslog now works with iSyslogKit: a free Swift package that gives your app an in-app log console and lets testers share their logs with you. iSyslog opens those sessions on iPhone, iPad and iPhone Duo. • New design for iOS 26 and later, with Dark Mode • Severity chart, errors-only filter and search • Session library and session info • A sample session to explore right away ### 2.0.2 — 2015-08-05 This version brings performance improvements and enhancements. Thanks for the reviews so far! If you like the app, please help us by leaving a review in the AppStore. ### 2.0.1 — 2015-07-17 Added some UI refinements to make the app even better. ### 2.0 — 2015-07-02 Version 2.0 was rewritten from scratch and brings several enhancements and new features. The app icon and the UI has been fully revamped. iSyslog now supports Phone6 and iPhone6+. Besides, the app is now universal, so it runs natively also on iPad devices. ## More apps by Karoly Nyisztor - [My Money - Track Your Budget](https://appshunter.io/ios/app/my-money-track-your-budget/id694387206) - [Travel Mate - Travel Expenses](https://appshunter.io/ios/app/travel-mate-travel-expenses/id977306588) - [Gym Gorilla: Workout Tracker](https://appshunter.io/ios/app/gym-gorilla-workout-tracker/id989629842) - [Tomodo](https://appshunter.io/ios/app/tomodo/id6739451293) All apps by Karoly Nyisztor: https://appshunter.io/developer/329758641 ## Related topics [karoly nyisztor](https://appshunter.io/ios/topics/karoly-nyisztor) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-30.*