When comparing Signal vs Now for Reddit, the Slant community recommends Signal for most people. In the question“What are the best Android apps?” Signal is ranked 3rd while Now for Reddit is ranked 34th. The most important reason people chose Signal is:
Signal uses an advanced end to end encryption protocol that provides privacy for every message every time.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Provides security and privacy
Signal uses an advanced end to end encryption protocol that provides privacy for every message every time.
Pro Free and open source
Signal is free and open source software, enabling anyone to verify its security by auditing the code. It's the only private messenger that uses open source, peer-reviewed cryptographic protocols to keep your messages safe.
Pro Supports encrypted group chats
Pro Has a desktop app
Signal Desktop can be used on multiple devices and has most features of the Android version, although it still requires you to register with your phone.
Pro Supports sharing of various different media types
Signal supports: emoji, pictures, videos, audio, contacts, any location and GIF.
Pro Note to Self feature
Allows you to "send: messages to yourself and sync to desktop so you can use Signal as a kind of encrypted Pushbullet alternative
Pro You can easily view all media exchanged
You can easily view all media shared in the chat without scrolling back to when it was shared.
Pro Annonymous Sender (Encrypted)
The sender credentials can be encrypted with the rest of the message, leaving only the recipient address readable by the Signal server. Even if Signal wanted they couldn't see who is talking with who by this mean.
Pro Works everywhere in every country
Unlike most messenger apps, Signal works reliably in all countries by securely circumventing internet censorship.
Pro Recommended by Edward Snowden
Edward Snowden uses this messenger and recommends it to everyone who is concerned about his privacy.
Pro Clean slick interface
With the card-based UI, the app fits in very well design wise with the Material Design of the OS. Everything is intuitive to use being that the interface is familiar and follows Google's design guidelines.

Pro Translucent nav bar for Android 4.4+
Now for Reddit utilizes the transparent nav bar implemented in Android 4.4+, making for a cleaner looking interface.

Pro Nicely designed launcher icon
The design of the icon for Now for Reddit is clean, simple and fits well with material design.
Pro Configurable card sizes
Now for Reddit is one of the few Reddit clients that come with the ability to change how much content can be viewed on the screen. You'd also be hard pressed to find another Reddit client that can show you full-size images (via full-size cards) without you having even tapped on the image.
Keep in mind that the configurable card sizes might also have an impact on battery consumption, ranging from tiny cards (most battery efficient) to full size cards (most battery/data hungry).
Pro UI for phones and tablets
The design of the app lends itself well to phones and tablets alike no matter the orientation that the device is being held in. Not having to switch apps depending on the users device is a nice feature.

Pro Great performance/less jank
Using Android's profile GPU rendering tool it can be clearly shown how the Now for Reddit is generally more responsive than quite a few of the other popular reddit clients. For people obsessive about the 60 FPS mark, it would be hard to find a near 60 FPS experience as good as Now for Reddit.
Pro Easy navigation of subreddits
Cons
Con Needs access to your phone number and contacts to work
Con Single device
Signal can only be registered to one mobile device at a time. But you can link Signal to Signal Desktop.
Con Servers hosted in the US
A security risk due to National Security letters, which require giving up data to the US state, and making it illegal to disclose that.
Con Unreliable notifications
Sometimes messages won't be received if the Signal app has been closed for a long time or hasn't been opened after booting the device.
Con Can be CPU and/or data intensive
Reddit Now tends to use a lot of data as well as runs the CPU pretty hard, which in turn drains the battery fast.
Con Hard to navigate when you subscribe to many subreddits
Con Delayed messages
Most Reddit clients refresh your inbox upon opening the app, notifying you instantly about any messages that you have. Now for Reddit on the other hand may not alert you of any messages even if you're using the app. The delay is generally short, but sometimes can take up to a couple of hours with no noticeable pattern. As a workaround, it's possible to manually refresh, but this might be a deal-breaker for some.
Con Has to reload sometimes and will always reload and forget your place (goes back to frontpage) if you reopen the app from its launcher icon
