# CPS Link vs SAS Flex

The clearest difference is review sentiment: SAS Flex at 25% against CPS Link's 13%. CPS Link's advantage is iOS requirement (11.0 vs 15). 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.

CPS Link ships an update every 3 weeks, SAS Flex fortnightly. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CPS Link | SAS Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (154 ratings)](https://appshunter.io/ios/app/cps-link/id1185092042/reviews)** | — |
| Number of ratings | **154** | — |
| Positive reviews | 13.3% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 85 MB | 55 MB |
| Requires iOS | **11.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CPS Products](https://appshunter.io/developer/945771072) | [Specialty Answering Service](https://appshunter.io/developer/922095753) |

## What reviewers say

### CPS Link

[App page](https://appshunter.io/ios/app/cps-link/id1185092042)

Connect multiple wireless sensors to create a comprehensive diagnostic measurement system. Perform quick single measurements or complex full system diagnostics with analytics. Expand your system over time with new sensor solutions.

**Highlights:** Connect multiple wireless sensors, Comprehensive diagnostic measurement system, Perform quick measurements, Complex system diagnostics with analytics, Expandable sensor system

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Worked well initially
- 💡 Useful features

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔌 Connectivity issues
- ⚠️ Unreliable performance
- 💸 Expensive for poor quality

**Reported bugs**

- App crashes on launch
- Bluetooth connectivity problems
- Inconsistent readings and measurements
- Incompatible with newer iOS versions

**Requested features**

- Update app to fix compatibility issues
- Improve customer support and responsiveness
- Provide better documentation and troubleshooting guides


### SAS Flex

[App page](https://appshunter.io/ios/app/sas-flex/id1532051532)

Manage your answering service from your phone. Listen to calls, read transcripts, text callers, and update schedules in real time. Improve customer relationships and ensure no calls are missed.

**Highlights:** Listen to call recordings, Read call transcriptions, Text callers directly, Manage on-call schedules, Review call activity, Block unwanted callers, Post operator alerts

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CPS Link free?

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

### Is SAS Flex free?

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

### Do CPS Link or SAS Flex have ads?

Neither CPS Link nor SAS Flex shows ads.

### Which is updated more often, CPS Link or SAS Flex?

CPS Link ships an update every 3 weeks, and SAS Flex fortnightly. Most recently, CPS Link was updated on October 7, 2026 and SAS Flex on October 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.*