When comparing Pulse vs Disa, the Slant community recommends Disa for most people. In the question“What are the best SMS apps for Android?” Disa is ranked 11th while Pulse is ranked 15th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Syncs with LinkedIn to deliver content from chanels you follow and people in your network
Unlike other readers, Pulse allows users to follow LinkedIn influencers on top of blogs and publications
Pro Allows integration with more social feeds than similar apps
In addition to letting you pull from Facebook and Twitter, Pulse lets users add feeds from YouTube and Digg.com.
Pro Syncs with Pocket, Evernote, Instapaper, and Readability
What you follow and save on Pulse can become available on Pocket, Evernote, Instapaper, and Readability.
Pro Works without internet
When connected to WiFi, pulse downloads articles so you can read them when you are on the go.
Pro Fits more on the screen than similar readers
With Pulse, every pixel on the screen seems to be utilized. Depending on your preferences, this can be a good thing or a bad thing. While some users want a screen packed full of information, others have found it overwhelming.

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.
Cons
Con Forces users to login with LinkedIn
Many users don't want or need a LinkedIn account. In order to use Pulse, they must create a LinkedIn account. This has made many people unhappy because it blurs the line between their personal and professional lives.
Con More bulky and less accessible after most recent update
Pulse's reviews are littered with unhappy users after their most recent update. Many users are reporting that the new layout is too busy or too bulky.
Con Unstable
Some users have reported that Pulse has started to crash after its most recent update.
Con Easy to accidently exit from
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.
Con Constantly asks to re-authenticate WhatsApp
Con Doesn't let you customize notifications per conversation or contact
