When comparing Disa vs Element (formerly Riot), the Slant community recommends Element (formerly Riot) for most people. In the question“What are the best messaging apps for Android?” Element (formerly Riot) is ranked 2nd while Disa is ranked 14th. The most important reason people chose Element (formerly Riot) is:
You're not confined within Element's or even Matrix garden, and you don't have to make users of other networks switch to Matrix.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Does what it's supposed to do, without bloatware
Pro Open source plugin API
Everyone can develop their own plug-ins.
Pro Easy to use
Disa is very easy to use and has an open source API, so many new services will be added soon.
Pro Customizable notifications
Ability to set different notification sound/vibration/led based on the plugin.
Pro Unified conversations
Ability to merge conversations from the same contact on different services.
Pro Friendly developers and generally good G+ community
Fast, decent replies to questions, even if they've been asked before.
Pro Many requested features
The developer team does actually listen to the community and adds requested features.
Pro Pushbullet support
Disa works great with Pushbullet, allowing you to answer from your PC.
Pro Many languages
Help and support in many languages.
Pro Disa takes privacy much more serious
Currently, the Disa team knows less about you than the website you're currently visiting.
Pro Great material design
With color-changing design with custom colors for each service.
Pro Bridges to other networks
You're not confined within Element's or even Matrix garden, and you don't have to make users of other networks switch to Matrix.
Pro Markdown support
Code snippets in chats can be highlighted with Markdown.
Pro Simple interface
Element has a very simple interface, adding the ability for more inexperienced users to use it.
Pro VOIP and Videoconferencing
Pro Supports encryption
Element allows for fully encrypted text, voice, and video chatting.
Pro Widgets support
Want to watch that flick at YouTube and discuss it at the same time? Have Grafana graphs stacked above your DevOps team chat? Collaboratively edit Google Docs and chat over without switching applications? This is possible with Element.
Pro Decentralized
An open network for secure, decentralized communication.
Pro Self-hosting and federated network
Pro Libre/open source
Pro Search
Search messages in your current room, or all the rooms you're in. Not subject to a message history limit like Slack.
Pro Cross platform
Web browser
Linux
OS X
Windows
Android
iOS
Pro Large existing community
With public rooms for many people, and you can create your own and let people from the community join.
Pro Etherpad real-time document collaboration
An easy to activate integration that allows multiple authors to edit a document simultaneously.
Pro File Sharing
Pro Supports text, voice, video
Cons
Con Doesn't support most messaging apps
Con Disa doesn't follow the Google Design Guidelines
Hamburger Menu/Navigation Drawer (Side Menu):
https://www.google.com/design/spec/patterns/navigation-drawer.html#navigation-drawer-contentNo Animations:
Empty Pages/States:
Maybe a Launch screen?:
Con Does not support Google SMS
Con Closed source
Disa is closed source, so the development speed is capped of their team, no external developer can help or add features that are not on the route of the team.
Con Doesn't support WhatsApp at the moment
Con Attaching pictures suddenly failed; no working solution.
Con Smaller development team leading somewhat slow implementation of requested features
Though the main development (framework, etc) is moving along fine, things like quick reply and sending multiple images at once should've been in quicker.