WhatsDog

Monitor your contacts' WhatsApp status

Whats Tracker

Check who's viewed your WhatsApp profile

WaStat

How much time do you spend hooked up to WhatsApp?

Whats Dual

Sync one of more WhatsApp accounts on one or more devices

Tools for WhatsApp

A toolbox with resources to enhance WhatsApp

WhatsBot

Schedule automatic replies with this WhatsApp bot

Whats Web

Backup all your files received by WhatsApp

WAPunch

Add new features to WhatsApp

Whats Tracker: Who Viewed My Profile?

App to spy on who visits your WhatsApp profile

WT Hub

Set of additional tools for WhatsApp

Status Saver

Download the statuses of your favoriate chat and messaging app

WhatsApp Spy

Spy on your WhatsApp contacts to know when they've been online

WaRadar

The app for discovering if your WhatsApp contacts are online

GBStickers - Stickers for GBWhatsApp

Exclusive pack of stickers for GBWhatsApp

Labalabi for WhatsApp

Send bulk messages on WhatsApp

Yansa

Messenger app tracker

Google Keep

Google's notes application

QuickEdit

Easy-to-use app for editing code

Evernote

Organize your ideas and notes

Squid

Take hand-written notes

Notewise

Reinventing notetaking

Jamboard

The Google collaborative whiteboard

ColorNote

Improve the organization of your notes

Samsung Notes

Samsung's notes application

Goodnotes

A digital notepad for handwriting

AIDE

Learn how to code on your Android

PyDroid

Write Python code on your smartphone

Otter

App for taking voice notes

Explain Everything

Interactive whiteboard for remote collaboration

DroidEdit

Code editor for Android

anWriter

A simple and complete HTML editor