# ST BLE Sensor vs Lecture Translation

The clearest difference is in-app purchases: ST BLE Sensor at none against Lecture Translation's 9. Lecture Translation's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Lecture Translation sells 9 in-app purchases, starting at $2.99 per month. ST BLE Sensor asks for nothing beyond the download.

ST BLE Sensor ships an update every 2 months, Lecture Translation every 6 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ST BLE Sensor | Lecture Translation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (10 ratings)](https://appshunter.io/ios/app/st-ble-sensor/id993670214/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 55 MB | 92 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [STMicroelectronics](https://appshunter.io/developer/1801774735) | [IT Source One](https://appshunter.io/developer/1642164409) |

## What reviewers say

### ST BLE Sensor

[App page](https://appshunter.io/ios/app/st-ble-sensor/id993670214)

This app connects to ST development boards via Bluetooth Low Energy to access sensor data. You can log data to cloud providers, update board firmware, and explore various demo functionalities like environmental sensing and machine learning.

**Highlights:** Access sensor data, Log data to cloud, Update board firmware, Explore demo functionalities, Bluetooth Low Energy communication, Motion-sensor data fusion

**Features:** macOS Compatibility

**In-app purchases:** none


### Lecture Translation

[App page](https://appshunter.io/ios/app/lecture-translation/id6751921368)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Listener Basic | $2.99 | per month |
| Listener Standard | $4.99 | per month |
| Listener Premium | $9.99 | per month |
| Speaker Basic | $19.99 | per month |
| Speaker Expanded | $59.99 | per month |
| Speaker Enterprise | $199.99 | per month |
| Extra Hour | $4.99 | one-time |
| Additional Storage | $4.99 | one-time |
| One Time Lecture | $5.99 | one-time |


## Frequently asked questions

### Is ST BLE Sensor free?

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

### Is Lecture Translation free?

Lecture Translation is free to download, with in-app purchases available.

### Do ST BLE Sensor or Lecture Translation have ads?

Neither ST BLE Sensor nor Lecture Translation shows ads.

### Which is updated more often, ST BLE Sensor or Lecture Translation?

ST BLE Sensor ships an update every 2 months, and Lecture Translation every 6 weeks. Most recently, ST BLE Sensor was updated on October 15, 2026 and Lecture Translation on October 3, 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.*