When comparing IMO vs Verbs, the Slant community recommends IMO for most people. In the question“What are the best messaging apps for iOS?” IMO is ranked 20th while Verbs is ranked 25th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Video call support
Pro Beautiful User Interface
Although IMO has a comparable, and in some cases superior, feature set when compared to the competition its key selling point is its interface.
From LifeHacker when it won "Best IM Client":
Signing on, navigating chats by tapping the tabs at the bottom, searching for buddies, and virtually any other operation is easy to find and use. The app, itself, is very quick. Even sending a voice IM, if you don't feel like typing, is responsive and sends quickly. Everything imo does it does well, but it's excellent navigation really makes it top notch.
IMO also has a fully functional website that you can use for chat while on your desktop or laptop. This really puts IMO ahead of the competition as you can use the same system on all your devices so you don't have to deal with overlapping notifications etc. (Note: IM+ also has this feature)
It should also be noted that it has the highest rating in the App Store due to both the UI and its stability.
Pro Easy to switch between conversations with tabs
Tabbed chats make it easy to switch between conversations
Pro Lists and chat histories are searchable
Both your buddy lists and chat histories are searchable.
Pro Accounts can be linked so you don't have to sign in to several accounts
Pro Push notifications
Pro Concurrent sessions
Concurrent sessions allow you to be logged in on your desktop while also being logged in on your phone.
Pro Chat groups
Pro View downloaded Office and iWork documents right within the app
With support for CloudApp and Droplr, you can send Photos and view PDFs, Office and iWork documents right within Verbs.
Pro Minimalist approach and a beautiful interface
Verbs distinguishes itself from the competition with a minimalist approach to IM and a beautiful interface.
Pro Use CloudApp and Droplr to send Photos
With support for CloudApp and Droplr, you can send Photos and view PDFs, Office and iWork documents right within Verbs.
Pro Client Support
- AIM
- Google Talk
- MobileMe
Pro Finds and displays your AIM and Gtalk buddies linked in AddressBook
See your Facebook friends, your AIM buddies and your Google contacts in a unified buddy list
Pro Send chat logs via email
Pro Mark links in received messages to read later via Instapaper
Cons
Con No support for third-party instant messaging networks
On March 3, 2014, IMO will start discontinuing support for all third-party instant messaging networks.

Con Notable client support exceptions
- IM/MobileMe
- MSN/Windows Live
- Yahoo!
- Jabber
- ICQ
