# CellTrust SL2 vs Secure Contacts

The clearest difference is rating: Secure Contacts at 5.0 against CellTrust SL2's 3.2. CellTrust SL2's advantage is ratings volume (27 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Secure Contacts 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 1, so its average is the more settled of the two.

CellTrust SL2 ships an update every 2 months, Secure Contacts every 6 weeks. The most recent releases landed on September 11, 2026 and July 26, 2026 respectively.

## The numbers

| Metric | CellTrust SL2 | Secure Contacts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (27 ratings)](https://appshunter.io/ios/app/celltrust-sl2/id1170300972/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/secure-contacts/id1617596880/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 130 MB | 43 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CellTrust Corporation](https://appshunter.io/developer/516410103) | [Provectus Software GmbH](https://appshunter.io/developer/1717423073) |

## What reviewers say

### CellTrust SL2

[App page](https://appshunter.io/ios/app/celltrust-sl2/id1170300972)

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:** macOS Compatibility, Siri integration, Vision Pro support

**In-app purchases:** none


### Secure Contacts

[App page](https://appshunter.io/ios/app/secure-contacts/id1617596880)

Manage business contacts centrally and compliantly without manual maintenance. Consolidate contacts from Outlook, Teams, and CRM systems in a secure environment, avoiding unwanted synchronization with third-party providers.

**Highlights:** GDPR-compliant contact storage, Microsoft 365 integration, Teams calls and chats, Caller identification and blocking, Duplicate detection and merging, Secure contact sharing, Vacation mode

**In-app purchases:** none


## Frequently asked questions

### Is CellTrust SL2 free?

CellTrust SL2 is free to download, with no in-app purchases.

### Is Secure Contacts free?

Secure Contacts is free to download, with no in-app purchases.

### Which has better reviews, CellTrust SL2 or Secure Contacts?

Secure Contacts is rated higher. CellTrust SL2 averages 3.2 out of 5 from 27 ratings, while Secure Contacts averages 5.0 from 1 ratings.

### Do CellTrust SL2 or Secure Contacts have ads?

Neither CellTrust SL2 nor Secure Contacts shows ads.

### Which is updated more often, CellTrust SL2 or Secure Contacts?

CellTrust SL2 ships an update every 2 months, and Secure Contacts every 6 weeks. Most recently, CellTrust SL2 was updated on September 11, 2026 and Secure Contacts on July 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*