# Theengs BLE vs Viewer3D

The clearest difference is price: Viewer3D at $0.99 against Theengs BLE's $3.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Theengs BLE costs $3.99 and Viewer3D $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Theengs BLE ships an update every 5 months, Viewer3D every 3 months. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Theengs BLE | Viewer3D |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/theengs-ble/id6443457651/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 45 MB | 24 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [A Thing Story LLC](https://appshunter.io/developer/1646121198) | [北京秤鑫科技有限公司](https://appshunter.io/developer/1865113112) |

## What reviewers say

### Theengs BLE

[App page](https://appshunter.io/ios/app/theengs-ble/id6443457651)

This app reads data from a wide range of Bluetooth Low Energy sensors, displaying environmental parameters like temperature and humidity. It offers live BBQ monitoring with custom notifications and integrates with smart home platforms like Home Assistant via MQTT. Your data stays local by default.

**Highlights:** Reads various BLE sensors, Live environmental data display, Smart home integration (MQTT), Live BBQ monitoring, Customizable notifications, Vendor-agnostic sensor support

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

**In-app purchases:** none


### Viewer3D

[App page](https://appshunter.io/ios/app/viewer3d/id6757183916)

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

**In-app purchases:** none


## Frequently asked questions

### Is Theengs BLE free?

Theengs BLE costs $3.99, with no in-app purchases.

### Is Viewer3D free?

Viewer3D costs $0.99, with no in-app purchases.

### Do Theengs BLE or Viewer3D have ads?

Neither Theengs BLE nor Viewer3D shows ads.

### Which is updated more often, Theengs BLE or Viewer3D?

Theengs BLE ships an update every 5 months, and Viewer3D every 3 months. Most recently, Theengs BLE was updated on October 11, 2026 and Viewer3D on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*