CellTrust SL2 vs Card4Action
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Card4Action
Easily share and update contact information through digital profile cards. The app allows for check-ins at locations and meetings, facilitating networking and providing local offers. Create custom cards for different situations and manage contact interactions with notes and actions.
- Digital profile card sharing
- Location and meeting check-ins
- Real-time contact info updates
- Customizable profile cards
- Local offer discovery
- Contact notes and action tracking
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Check in Find and save information from locations you have checked in on. Meetings and profile cards Use Card4Action to check-in at places and meetings, where you’ll be able to share your contact info with the other participants. Up to date info Anyone you have shared your profile card with will receive the updated info when you make changes to it. You will likewise always have up to date information to your contacts through their cards. Create your profile cards Create different cards for different situations, whether it’s a private or business card. You choose which card you want to share with whom. Find offers Find local offers when you check-in at places. Remember your meetings Create actions and notes on your contacts to simplify any follow-up interactions.
Screenshots
Verdict
The clearest difference is rating: Card4Action at 5.0 against CellTrust SL2's 3.2. Card4Action also leads on update cadence (every 3 weeks vs every 2 months). CellTrust SL2's advantage is ratings volume (27 vs 1). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Card4Action 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, Card4Action every 3 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | CellTrust SL2 | Card4Action |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (27 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 27 — better | 1 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 130 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | CellTrust Corporation | Card4Action AB |
Customer experience
CellTrust SL2
Card4Action
In-app purchases
CellTrust SL2
No in-app purchases
Card4Action
No in-app purchases
Questions
Is CellTrust SL2 free?
Is Card4Action free?
Which has better reviews, CellTrust SL2 or Card4Action?
Do CellTrust SL2 or Card4Action have ads?
Which is updated more often, CellTrust SL2 or Card4Action?
Other comparisons
