Comparison

OTCV for iPhone vs C3 Complete Messenger

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OTCV for iPhone

This professional application extends your company's communication system to your mobile device. It provides unified communication services, including single identity, directory lookup, and enterprise telephony, allowing for seamless business calls and messaging.

Highlights
  • Single identity across devices
  • Corporate and local directory lookup
  • Enterprise telephony and call control
  • Visual voicemail
  • Instant messaging
  • VoIP over Wi-Fi
  • Secure HTTPS access
Read full description

Alcatel-Lucent OpenTouch Conversation (OTCV) is a cornerstone product of the Alcatel-Lucent OpenTouch Suite for Small and Medium Enterprise. It is an Apple® iPhone™ professional application providing a full set of IP-based unified communication services. OTCV for iPhone is the extension of your company on your mobile that connects to the Alcatel-Lucent OmniPCX Office, the powerful communication server dedicated to small and medium enterprises. It delivers advanced unified communication services on Apple® iPhone™, including single identity, directory lookup, enterprise telephony, call routing control and Voice over IP capabilities. FEATURES • Single identity: One phone number across multiple devices. Single business identity, whatever the device used • Directory lookup: Search local and corporate contacts from an easy-to-use interface • Contacts: Get instant access to corporate and local contacts and use a single click to call (dial by name) • Notifications: New voice messages and missed calls + IM • Mid-call control: Take a call, clear a call, transfer a call, put into conference, hold/retrieve a call and switch between calls • Visual voicemail: Voice messages with a visual voicemail interface (select, play back or delete messages in any order) • Instant Messaging : Exchange instant messages between the OmniPCX Office subscribers • VoIP using SIP Companion option*: VoIP capabilities allowing the user to place and receive business calls on his iPhone through the company Wi-Fi data connection. • Get Call Feature: Enables the user switching a conversation from his mobile to his business deskphone without interrupting the call • Data over Wi-Fi: Automatic switch to trusted WLAN (roaming) • Secure access: HTTPS support and remote worker topology support (if VPN is setup) BENEFITS Access features anywhere • Users have unified communication capabilities everywhere, on-site and off-site. So, regardless of location, they can get business notification events (voice messages, missed calls and IM) and access to enterprise-grade services, including corporate directory, telephony and communication history. Maintain a single identity • A single business number is used across multiple devices, such as desk phone, personal computer, mobile phone and home phone. Outbound calls from a mobile device can use a single identity and phone number, making it easier for colleagues, customers, partners and personal contacts to recognize calls from the OTCV. Connect any way, anytime • Workers can select the best way to communicate when initiating a phone call Control/reduce costs • Cellular: Significantly reduce smartphone costs with savings on long distance calls • WLAN: Use Wi-Fi® for data when at the office or at home, for voice when inside of the company (iPhone only) • Easy VPN: Use Wi-Fi® also for voice outside of the company Connect more securely • Secure access is provided to the enterprise with HTTPS support Coverage optimization • VoIP using SIP Companion option REQUIREMENTS • Alcatel-Lucent OmniPCX Office RCE R8.1 release and later • iPhone 3GS, 4, 4S, 5, 5C, 5S, 6, 6 Plus – iOS 6.0 and later • Connectivity: Mobile 3G data access or company Wi-Fi internet access for VoIP capabilities

About

C3 Complete Messenger

Communicate with customers using your business phone number for texts and pictures. Access your messages from any device with a single login, and allow multiple users to manage a shared business number. This app makes it easy for customers to reach you via text without needing a separate application.

Highlights
  • Send and receive texts from business numbers
  • Support for picture messages
  • Use on multiple devices with one login
  • Web browser access
  • Multiple user access to shared numbers
Features
Read full description

With C3 Complete Messenger, you can send and receive texts from your C3 Complete business phone numbers. Make and receive text messages using your business phone number! Use your business phone number to text instead of your personal number Send and receive text and picture messages to/from any cell phone number in the continental US View your messages on multiple devices: Use your account on multiple devices with one sign-in Access your messages from any computer via your browser (Chrome/Firefox/Edge) Multiple users can access the same number so you or your team can reply to any message Now your customers can communicate with you with the ease and convenience that they have when texting with friends and family. No need to download a separate messaging “app” to contact you - they can simply text your business number and get in touch.

Screenshots

OTCV for iPhone4 screens
C3 Complete Messenger4 screens

Verdict

The call

The clearest difference is review sentiment: C3 Complete Messenger at 100% against OTCV for iPhone's 0%. OTCV for iPhone's advantage is update cadence (every 6 weeks vs every 6 months) and iOS requirement (6.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OTCV for iPhone ships an update every 6 weeks, C3 Complete Messenger every 6 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
OTCV for iPhone versus C3 Complete Messenger: the parameters behind the verdict, then further details
ParameterOTCV for iPhoneC3 Complete Messenger
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—2 — better
Update frequencyEvery 6 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size34 MB55 MB
Age rating4+4+
DeveloperALE InternationalTextable

Customer experience

OTCV for iPhone

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

C3 Complete Messenger

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

OTCV for iPhone

No in-app purchases

None

C3 Complete Messenger

No in-app purchases

Questions

Is OTCV for iPhone free?
OTCV for iPhone is free to download, with no in-app purchases.
Is C3 Complete Messenger free?
C3 Complete Messenger is free to download, with no in-app purchases.
Do OTCV for iPhone or C3 Complete Messenger have ads?
Neither OTCV for iPhone nor C3 Complete Messenger shows ads.
Which is updated more often, OTCV for iPhone or C3 Complete Messenger?
OTCV for iPhone ships an update every 6 weeks, and C3 Complete Messenger every 6 months. Most recently, OTCV for iPhone was updated on October 7, 2026 and C3 Complete Messenger on October 13, 2026.

Other comparisons