Comparison

CellTrust SL2 vs RocketVox Next

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

Head to head
About

CellTrust SL2

This app provides a dedicated business number for your mobile device, separating personal and professional communications. It utilizes secure technologies for internal messaging and voice calls, ensuring compliance and eDiscovery readiness for enterprises.

Highlights
  • Assign dedicated Mobile Business Number (MBN)
  • Separate personal and business communications
  • SecureSMS® and SecureVoice™ technologies
  • Secure internal communications
  • eDiscovery and compliance support
  • BYOD handset compatibility
Features
Read full description

CellTrust SL2™ is an enterprise-level application that works by assigning a Mobile Business Number (MBN) to keep personal and business communications separate on a single, Bring Your Own Device (BYOD) handset, enabling communications without using the employee’s personal telephone number. Built on CellTrust’s SecureSMS® and SecureVoice™ technologies, this seamless solution also enables a secure connection for internal communications between SL2 users. This application is vital for enterprise communications that need to meet eDiscovery and compliance requirements. Any names or other personal data displayed are fictional and not based on real individuals. For use under patents: https://www.celltrust.com/SL2patents.

About

RocketVox Next

This business communication app offers a powerful desk phone replacement with features like team status, real-time chat, call history, and voicemail. It also supports SMS, MMS, RCS messaging, and instant call forwarding to other devices.

Highlights
  • Ultra High Performance Phone
  • Team Status Directory
  • Real-time Team Chat
  • Call History with Tags & Notes
  • Real-time Queue Monitoring
  • Company & Individual Contacts
  • SMS, MMS, RCS Messaging
  • Instant Call Forwarding
Features
Read full description

Welcome to RocketVox Next! Our amazing new app, a powerful, easy to use desk phone replacement or companion to our next level business phone system experience, featuring: - New Ultra High Performance Phone - Directory: See Team Status at a glance - Channels: Chat and Share with your Team in Realtime - History: Infinite scrolling with Tags + Notes plus listen to recordings - Queues: Realtime monitoring including easy agent login - Contacts: Company, individual, or shared contacts with call tracking - Voicemail: Quick play features and instant archiving - Fax: Converts all popular document types - Messaging: Supports SMS,MMS, and RCS standards with delivery confirmation, automatic replies and automatic messages to missed callers - Snap: Instantly send calls to other devices, including desktop phones - Passwordless, no hassle multi-factor authentication for easy deployment The official app for our award winning business phone service. Since 2005 RocketVox has been a leading VoIP cloud service provider with the best features, the lowest prices, 99.999% uptime and fanatical customer support, we love our customers!

Screenshots

CellTrust SL24 screens
RocketVox Next4 screens

Verdict

The call

The clearest difference is rating: RocketVox Next at 5.0 against CellTrust SL2's 3.2. RocketVox Next also leads on update cadence (every 8 days vs every 2 months). CellTrust SL2's advantage is ratings volume (27 vs 3). 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.

ReceptionRating · Positive reviews · Number of ratings

RocketVox Next holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: CellTrust SL2 has 27 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

CellTrust SL2 ships an update every 2 months, RocketVox Next every 8 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
CellTrust SL2 versus RocketVox Next: the parameters behind the verdict, then further details
ParameterCellTrust SL2RocketVox Next
PriceFreeFree
Rating3.2 (27 ratings)5.0 (3 ratings) — better
Positive reviews20.0% of reviews—
Number of ratings27 — better3
Update frequencyEvery 2 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.614.0 — better
Further details — not scored
Size130 MB3 MB
Age rating4+4+
DeveloperCellTrust CorporationHeavyLogic

Customer experience

CellTrust SL2

All ratings27 ratings
Positive55.6%
Neutral0.0%
Negative44.4%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

RocketVox Next

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

CellTrust SL2

No in-app purchases

None

RocketVox Next

No in-app purchases

Questions

Is CellTrust SL2 free?
CellTrust SL2 is free to download, with no in-app purchases.
Is RocketVox Next free?
RocketVox Next is free to download, with no in-app purchases.
Which has better reviews, CellTrust SL2 or RocketVox Next?
RocketVox Next is rated higher. CellTrust SL2 averages 3.2 out of 5 from 27 ratings, while RocketVox Next averages 5.0 from 3 ratings.
Do CellTrust SL2 or RocketVox Next have ads?
Neither CellTrust SL2 nor RocketVox Next shows ads.
Which is updated more often, CellTrust SL2 or RocketVox Next?
CellTrust SL2 ships an update every 2 months, and RocketVox Next every 8 days. Most recently, CellTrust SL2 was updated on October 24, 2026 and RocketVox Next on October 10, 2026.

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