LetsCheck - A Checkmk Client with Notifications for Mobile and Desktop

[jochum (Rene Jochum)]

LetsCheck is a Checkmk client for Android, iOS, Linux, Mac OS-X and Windows written with the Flutter SDK.

Features

• View Hosts/Services with comments
• Notifications
• Search Hosts/Services, use the | symbol to seperated multiple searches

Download

Get it from Github Releases

Demo:

FAQ

The “Frequently asked questions” page is available on the Github WIKI.

Authors

• @jochumdev

License

Apache 2.0 - Copyright 2025 by @jochumdev

P.s.: This is a follow up of: Let's check a Android/iOS/Linux/Mac/Windows client for check_mk - #26 by jochum

[jochum (Rene Jochum)]

New release: 0.2.0+1272:

This is a complete rewrite of the backend of LetsCheck. I’m now using flutter_riverpod instead of flutter_bloc.

Features:

• Speed, the whole app is now a lot faster.
• Change Settings->Refresh Seconds to an number input Dialog
• Hide password on existing connections.
• Allow users to limit a connection on WIFI
• Allow HTTP connections (you should limit them to wifi)
• Better error handling
• Lots of bugfixes behind the scenes

Upcoming Features:

• Pause a connection
• Filters
  • state (!OK, !WARN, !CRIT)
  • Acknowledged
  • In Downtime
  • Regex on name - with regex add/filter.
• Wato Folders in a Treeview
• Notification Times
  • Day of week
  • Time from to
• Bio-metric authentication (Unlock the App with Face id / Fingerprint)
• Encrypted storage of the password(s)
• Notification settings:
  • Notify Acknowledged, Downtime, back to OK.
  • Do/do not show the plugin output in Notifications
• Flathub releases (makes LetsCheck available in Linux stores)
• Play Store release (Android)
• Apple Store release (iPhone)

Screenshots:

[jochum (Rene Jochum)]

Released Version 0.2.1+1273

New features

• Securer connection checking (ping) via login.py
• Pause connections
• Added talker
• Nicer UI with flex_color_scheme
• Added floating action button
• Use a FutureProvider for the client

Fixed

• Reworked connection handling, whatever you go WiFi, Mobile, Ethernet or Pause it works now

Download link on first post, screenshots (on edits via phone):

[jochum (Rene Jochum)]

“Added floating action button” - not sure about this “Feature” its rather a bug

I believe I keep that button in mind (for add Downtime/Acknowledge and stuff) and add the current Links from it to the sidepanel (drawer in Flutter / Mobile Language).

[jochum (Rene Jochum)]

I realy need some Design inputs for Filters, if anyone wanna help out please contact me either here or via Forum PMs.

[jochum (Rene Jochum)]

Hotfix Release Version 0.2.1+1274

Fixes

• White screen on Windows (thanks Die Ausführung des Codes kann nicht fortgesetzt werden, da icu.dll nicht gefunden wurde. · Issue #21 · jochumdev/letscheck · GitHub)

Version isn’t updated will show 1273 inapp.

P.s.: Windows Defender doesn’t like LetsCheck “Unknown Source”, you have to bypass it.

[jochum (Rene Jochum)]

0.2.2+1274

Fixed

• always use the last fetch data in background_service
• move lib/javascript → lib/platform_interfaces/javascript
• reimplement connections on desktop
• update deps

Windows notification:

[Biersmurf]

Hi Rene , I am just curious iff this is still in further development , aspecially for the IOS part