# Spectrum SD vs SecureLinx

The clearest difference is iOS requirement: Spectrum SD at 9.0 against SecureLinx's 14.0. On price, review sentiment, update cadence and ads there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Spectrum SD | SecureLinx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (43 ratings)](https://appshunter.io/ios/app/spectrum-sd/id719782523/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 22.2% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 69 MB | 35 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amtelco](https://appshunter.io/developer/362337074) | [MCUSA/CCUSA](https://appshunter.io/developer/1269432693) |

## What reviewers say

### Spectrum SD

[App page](https://appshunter.io/ios/app/spectrum-sd/id719782523)

This app offers secure messaging and paging for businesses, ensuring HIPAA and HITECH compliance. It allows for encrypted communication of protected health information and provides features like message filtering, custom replies, and adjustable security settings.

**Highlights:** Secure messaging and paging, HIPAA and HITECH compliant, Encrypted data transmission, Configurable passcode protection, Message filtering and history, Pre-set custom replies and notes, Adjustable auto-logoff settings

**Features:** macOS Compatibility

**In-app purchases:** none


### SecureLinx

[App page](https://appshunter.io/ios/app/securelinx/id1269432694)

This app provides a secure messaging service for clients of specific healthcare and business services. It ensures encrypted communication, meeting privacy regulations for sensitive information exchange.

**Highlights:** Encrypted messaging, HIPAA compliant, Business privacy laws, Client-specific service, Secure call center communication

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spectrum SD free?

Spectrum SD is free to download, with no in-app purchases.

### Is SecureLinx free?

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

### Do Spectrum SD or SecureLinx have ads?

Neither Spectrum SD nor SecureLinx shows ads.

### Which is updated more often, Spectrum SD or SecureLinx?

Spectrum SD ships an update every 2 months, and SecureLinx every 2 months. Most recently, Spectrum SD was updated on September 9, 2026 and SecureLinx on September 15, 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.*