Release version 2.2  (May 1, 2013)

• Fixed a bug with interruptions in Zelect channels
• Improved contacts authorization flow, added options to decline / block all, and resend contact request
• Added option to disable voice history
• Save log of users blocked in a channel history
• Added support for visual themes (Zello+ only)
• Bugfixes

Release version 2.1  (Mar 20, 2013)

• Updated UI to match Zello+ application
• Added support for Zelect channels, where new users are screened by moderators before they are allowed to join the conversation. This feature requires moderators and new users update the app
• Added option to adjust particular user's volume
• Added option to see the and free storage space occupied by voice history
• Alerts text is saved to history now
• Many bug fixes and performance improvements
• Trending channels are coming back soon!

Release version 1.9  (Nov 7, 2012)

• Added user and channel profiles
• Fixed remote control not working when the app in the background
• Added option to send location to your contact
• iPhone 5 compatibility fixes
• Various bugfixes and performance improvements

Release version 1.8  (Sep 19, 2012)

• Fixed a crash when using @Work accounts
• Added option to hide trending channels (use Edit on Channels tab)
• Added option to report abusive channels
• Bugfixes

Release version 1.7  (Aug 30, 2012)

• Added Trending channels section to Channels tab
• Improved in-app notifications
• Improved contact invitation flow
• Remote control PTT operation is now an option
• Fixed a bug when Zello status changes to Busy on audio interruption and doesn't return back to Available
• Improved VoiceOver support
• Fixed slow start up for users having 500+ contacts
• Faster sign in over slow network, reduced data usage
• Added Indonesian localization
• Fixed several crashes

Release version 1.6  (Jul 19, 2012)

• Added support for sharing messages on Facebook, Twitter via e-mail or SMS
• Improved handling of simultaneous talk in group and public conversations
• Added option to delete selected messages from history
• Added new audio options
• Solo mode now works in the background too
• Bugfixes

Release version 1.5  (June 20, 2012)

• Fixed crash on start when running on iOS 4.2
• Fixed crash when tapping user icon in Recents
• Support inviting contacts from address book to a channel
• Updated localization

Release version 1.4  (June 18, 2012)

• Streamlined navigation and improved UI
• Improved VoiceOver support
• Stability improvements and bugfixes
• Support using headset button as PTT toggle
• Parse URLs in alerts
• Added Bulgarian translation (contributed by Андреан Джамбазов)
• Added Italian translation (contributed by Danilo Bestagno)
• Added Polish translation (contributed by Paweł Masarczyk)
• Added Hebrew translation (contributed by שי)

Release version 1.3 (May 31, 2012)

• Channels tab (before they were mixed with Contacts).
• Channel connect/disconnect by tapping the channel icon.
• Channel invite option to easily share with your Zello contacts.
• Channel owners can assign users as moderators.
• Simplified status to Available, Busy or Offline (removed Headphone and Away status).
• iPhone notifications now display who is talking on a Channel.
• Older iPod Touch devices with a microphone now support Zello (for just listening)
• Fixed a call setup failure when the clear to send alert was off
• Other fixes and improvements

Release version 1.2 (May 8, 2012)

• New Call Alert feature sends an attention message with optional text.  Select from the Zello Contact options.  The receiver will hear an immediate tone or feel a vibration that will be repeated every 1 minute until they dismiss or reply to the alert.  You can add a text message or links.
• Swipe thru Contacts.  Switch thru your recent contacts by swiping the top display.
• Rename Contacts.  From the Contacts list, click > then type in the name you want to use.
• VoiceOver improvements including easier use of the History slider, better labeling and localization.
• Crashes fixed from History, Channel Details and switching between Wifi and cell data.
• Fixed @Work channel problems and improved  @work setup.

Release version 1.1 (April 16, 2012)

• Private / public channels
• Cross-platform with Blackberry, Android, Windows Mobile and PC
• History option
• Offline messages support
• Works on 3G and WiFi
• Ability to invite friends from address book
• Multiple users
• @Work Network support