# BLE Spy vs UDevice

The clearest difference is monetization model: UDevice at free against BLE Spy's paid. UDevice also leads on update cadence (every 3 weeks vs every 8 months) and review sentiment (78% vs 50%). BLE Spy's advantage is rating (4.8 vs 4.4) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

BLE Spy costs $4.99 and UDevice $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BLE Spy holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: UDevice has 36 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 50% of BLE Spy's written reviews are positive against 78% of UDevice's, so the app with the better star average is not the one people write more warmly about.

BLE Spy ships an update every 8 months, UDevice every 3 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | BLE Spy | UDevice |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/ble-spy/id1445874104/reviews)** | [4.4 (36 ratings)](https://appshunter.io/ios/app/udevice-dev-assistant/id1608053878/reviews) |
| Number of ratings | 4 | **36** |
| Positive reviews | 50.0% of reviews | **78.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | #92 | **#29** |
| Size | 10 MB | 159 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Peter Gasche](https://appshunter.io/developer/423543268) | [Gansu Zhenxian Network Technology Co., Ltd.](https://appshunter.io/developer/1616881226) |

## What reviewers say

### BLE Spy

[App page](https://appshunter.io/ios/app/ble-spy/id1445874104)

**Currently charting:** #92 Top Paid · Developer Tools (US App Store)

This utility allows users to discover, connect to, and interact with Bluetooth Low Energy devices. It offers standard features for browsing services and characteristics, alongside smart capabilities for customizing UUIDs and formatting data with JavaScript.

**Highlights:** Discover BLE devices, Connect to multiple peripherals, Browse services and characteristics, Read and write characteristic values, Log and export data to CSV, Customize UUIDs, Format characteristic data with JavaScript

**Features:** Vision Pro support

**In-app purchases:** none


### UDevice

[App page](https://appshunter.io/ios/app/udevice-dev-assistant/id1608053878)

**Currently charting:** #29 Top Paid · Developer Tools, #193 Top Grossing · Developer Tools (US App Store)

This app offers a comprehensive suite of developer and testing tools. It includes network utilities like HTTP(s) capture and DNS parsing, alongside system information and file management capabilities. Ideal for development, testing, and device management.

**Highlights:** HTTP(s) Capture/Rewrite, SSH and Terminal access, Python3 interpreter, Cookie editing, Network utilities (Ping, DNS, Traceroute, Port Scan), File manager, Device fingerprinting and system info

**Features:** macOS Compatibility, Safari Extension, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BLE Spy free?

BLE Spy costs $4.99, with no in-app purchases.

### Is UDevice free?

UDevice costs $4.99, with no in-app purchases.

### Which has better reviews, BLE Spy or UDevice?

BLE Spy is rated higher. BLE Spy averages 4.8 out of 5 from 4 ratings, while UDevice averages 4.4 from 36 ratings.

### Do BLE Spy or UDevice have ads?

Neither BLE Spy nor UDevice shows ads.

### Which is updated more often, BLE Spy or UDevice?

BLE Spy ships an update every 8 months, and UDevice every 3 weeks. Most recently, BLE Spy was updated on September 24, 2026 and UDevice on September 22, 2026.

### Which is more popular, BLE Spy or UDevice?

BLE Spy currently peaks at #92 in the App Store charts, and UDevice at #29. Chart position reflects recent download velocity rather than total install base.

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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.*