When comparing iMessage vs MegaChat, the Slant community recommends iMessage for most people. In the question“What are the best Skype alternatives?” iMessage is ranked 12th while MegaChat is ranked 22nd.
Ranked in these QuestionsQuestion Ranking
Pro Secure end-to-end encryption
Pro Cross-platform within Apple ecosystem
iMessage is available on iPhone, iPod, iPad, and Mac.
Pro Supports voice messages
Short voice recordings/messages can be quickly sent, and messages can be easily dictated into written messages as well.
Pro Free and unlimited messages over Wi-Fi and data
Messages clearly indicates whether messages are being sent over iMessage (blue) or SMS (green) where messaging rates apply. iMessages do not count as SMS messages with your carrier, instead they use a negligible amount of data to send over Wi-Fi and cellular data networks.
Pro Clear indicators for message delivery and receipt
The app indicates when messages have been sent, when they have been read, and when someone is typing.
Pro Comes pre-installed
No need to download or sign up for a new service
Pro Seamlesss switching between SMS messages
Pro Friends don't need to "sign up"
You can just message them using their existing phone number or Apple ID and they will get your message.
Pro Clean UI
UI is minimalistic, and clear. And there is a plethora of stuff on the left of text box if you wanna use them.
Pro Apps and games for iMessage are available
For example, you can play games like pool or you can show someone a destination to go to .
Pro Security and privacy via end-to-end encryption
Both chat and video calls are encrypted.
Pro No software to install
MegaChat is browser-based and can be accessed via any modern web browser.
Pro Built-in simple filesharing
Pro Good audio and video quality
Con Not cross-platform
iMessage is not available on anything but Apple devices.
Con iCloud sync of message is not stable
Sometimes, the messages on different devices with the same ID will be different, the syncing function work poorly.
Con Slow and unreliable
Con In beta
There still are some bugs that have to be worked out.