# ST BLE Sensor Classic vs Lexmark Optra Edge

The clearest difference is update cadence: Lexmark Optra Edge at every 3 months against ST BLE Sensor Classic's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

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

ST BLE Sensor Classic ships an update every 6 months, Lexmark Optra Edge every 3 months. The most recent releases landed on September 17, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | ST BLE Sensor Classic | Lexmark Optra Edge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/st-ble-sensor-classic/id6447749695/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 71 MB | 31 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STMicroelectronics](https://appshunter.io/developer/1801774735) | [Lexmark International, Inc.](https://appshunter.io/developer/333208550) |

## What reviewers say

### ST BLE Sensor Classic

[App page](https://appshunter.io/ios/app/st-ble-sensor-classic/id6447749695)

This app connects to ST development boards via Bluetooth Low Energy to access sensor data. It allows logging data to cloud providers and updating board firmware directly from your mobile device.

**Highlights:** Access sensor data, Log data to cloud providers, Update board firmware, Discover board functionalities, Supports motion-sensor data fusion, Activity recognition, Pedometer functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Lexmark Optra Edge

[App page](https://appshunter.io/ios/app/lexmark-optra-edge/id6747798713)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ST BLE Sensor Classic free?

ST BLE Sensor Classic is free to download, with no in-app purchases.

### Is Lexmark Optra Edge free?

Lexmark Optra Edge is free to download, with no in-app purchases.

### Do ST BLE Sensor Classic or Lexmark Optra Edge have ads?

Neither ST BLE Sensor Classic nor Lexmark Optra Edge shows ads.

### Which is updated more often, ST BLE Sensor Classic or Lexmark Optra Edge?

ST BLE Sensor Classic ships an update every 6 months, and Lexmark Optra Edge every 3 months. Most recently, ST BLE Sensor Classic was updated on September 17, 2026 and Lexmark Optra Edge on May 18, 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.*