CIDR Trainer Status

Published by Network Mom LLC

CIDR Trainer trains users to perform network subnet calculations. It uses
directed training drills while providing documentation to instruct users to
perform each step of network subnetting calculations.

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Common CIDR Trainer Problems & Solutions. Troubleshooting Guide

Complete guide to troubleshoot CIDR Trainer app on iOS and Android devices. Solve all CIDR Trainer app problems, errors, connection issues, installation problems and crashes.

Table of Contents:

CIDR Trainer iPhone Issues and Solutions

CIDR Trainer iOS app crashes, not working, errors
CIDR Trainer iOS app network issues
CIDR Trainer on iOS has black/white screen

CIDR Trainer Android App Issues and Solutions

CIDR Trainer has errors/crashing/not working
CIDR Trainer server network connectivity issues
CIDR Trainer has black screen

CIDR Trainer iPhone Issues and Solutions

Here are some helpful workarounds that should work whenever CIDR Trainer app keeps crashing or doesn't work as expected on your iPhone 14, 13,12,10,8,7,6, SE,XS,XR.

How to fix CIDR Trainer app crashes or not working on Iphone (iOS):

Close and restart the CIDR Trainer app on iPhone
Update CIDR Trainer app to the Latest Version for iOS
Uninstall and reinstall CIDR Trainer iPhone app
Update your iPhone to the latest iOS version

Fix CIDR Trainer on iPhone unable to connect to server/internet connection issues::

To resolve CIDR Trainer network issues, Reset phone network settings:
1. On iphone, Goto "Settings" » "General" » "Reset" » "Reset Network Settings".
2. Enter your device passcode. Then confirm "Reset Network Settings".

Turn off your VPN:
1. Goto "Settings" » "General" » "VPN".

Fix CIDR Trainer black/white screen (blank screen) on iPhone:

Follow the CIDR Trainer iOS app troubleshooting guide Here →

CIDR Trainer Android App Issues and Solutions

Fix CIDR Trainer not working on Android, crashes, errors or is unresponsive:

Follow these steps to resolve intermittent CIDR Trainer app issues:

Force Stop the CIDR Trainer App
1. On android, goto "Settings" » click CIDR Trainer app. » click "Force Stop".

Update CIDR Trainer to the latest version on PlayStore

Clear CIDR Trainer App Cache and Data:
1. On your device, goto "Settings" » click "Apps" » select "CIDR Trainer app" » click "Storage" » click "Clear Data" option. This Clears both data and cache.
2. Relaunch CIDR Trainer.

Fix CIDR Trainer unable to contact server/ CIDR Trainer internet connection errors on Android:

This issue is usually caused by your network. Here is how to fix:

On android, goto "Settings" » "Apps" or "Manage Apps" tab.
Click CIDR Trainer » "Force Stop".
Next, goto "Storage" » "Clear Data".
Again, got CIDR Trainer » "Mobile Data" » "Allow Background Data Usage".
Go back to "Settings" » "Connections" » "Mobile Network" » "Network Mode".
Now, put your network on 4G e.g. LTE/3G/2G (auto connect)
Relaunch CIDR Trainer on android.

Solve CIDR Trainer black/white screens issue on Android:

Follow the CIDR Trainer android app crash troubleshooting guide Here →

Contact Support

Some issues cannot be easily resolved through online tutorials or self help. So we made it easy to get in contact with the support team at Network Mom LLC, developers of CIDR Trainer.

41.03% Contact Match

Developer: Alex Humphreys

E-Mail: [email protected]

Website: Visit CIDR Trainer Website

90.91% Contact Match

Developer: SofaBaton.com

E-Mail: [email protected]

Website: Visit SofaBaton.com Website

About this app

It uses directed training drills while providing documentation to instruct users to perform each step of network subnetting calculations. After that you may try the other drills or purchase a permanent unlock of all training drills for a low price (see in-app purchases for the "forever full-unlock" price in your region). CIDR Trainer trains users to perform network subnet calculations. CIDR Trainer includes IPv4 and IPv6 CIDR calculators. Version 1. One purchase unlocks all versions of CIDRTrainer (iOS, iPadOS, and MacOS). You may try each training drill for free 20 times. CIDR Trainer uses iCloud to sync drill progress between your devices.