# BLE Spy vs UI Tracer

The clearest difference is review sentiment: UI Tracer at 100% against BLE Spy's 50%. UI Tracer also leads on update cadence (every 2 days vs every 8 months) and rating (5.0 vs 4.8). BLE Spy's advantage is in-app purchases (none vs 2) and chart position (#4 vs unranked). On ratings volume, ads and monetization model there is nothing between them.

BLE Spy costs $4.99 and UI Tracer $2.99 up front. UI Tracer sells 2 one-off in-app purchases. BLE Spy asks for nothing beyond the download.

UI Tracer holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 50% of BLE Spy's written reviews are positive against 100% of UI Tracer's.

BLE Spy ships an update every 8 months, UI Tracer every 2 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BLE Spy | UI Tracer |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/ble-spy/id1445874104/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ui-tracer/id1644874973/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Best chart rank | **#4** | — |
| Size | 10 MB | 20 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Gasche](https://appshunter.io/developer/423543268) | [Leonid Liadveikin](https://appshunter.io/developer/1644874975) |

## What reviewers say

### BLE Spy

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

**Currently charting:** #4 Top Paid · Developer Tools, #79 Top Grossing · 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


### UI Tracer

[App page](https://appshunter.io/ios/app/ui-tracer/id1644874973)

This app allows developers to preview various SwiftUI view styles without recompiling code. It offers comparisons across multiple Apple platforms, including iOS, iPadOS, watchOS, tvOS, and macOS, streamlining the design process.

**Highlights:** Preview SwiftUI view styles, Compare across iOS, iPadOS, watchOS, tvOS, macOS, No recompilation needed, Cross-platform code compatibility, Extensible view library

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Donation | $4.99 | one-time |


## Frequently asked questions

### Is BLE Spy free?

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

### Is UI Tracer free?

UI Tracer costs $2.99, and also offers in-app purchases.

### Which has better reviews, BLE Spy or UI Tracer?

UI Tracer is rated higher. BLE Spy averages 4.8 out of 5 from 4 ratings, while UI Tracer averages 5.0 from 4 ratings.

### Do BLE Spy or UI Tracer have ads?

Neither BLE Spy nor UI Tracer shows ads.

### Which is updated more often, BLE Spy or UI Tracer?

BLE Spy ships an update every 8 months, and UI Tracer every 2 days. Most recently, BLE Spy was updated on November 2, 2026 and UI Tracer on November 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.*