# Custom Observer App vs BLE Radar Ultra

The clearest difference is in-app purchases: Custom Observer App at none against BLE Radar Ultra's 1. Custom Observer App also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. BLE Radar Ultra sells 1 one-off in-app purchase. Custom Observer App asks for nothing beyond the download.

Custom Observer App ships an update every 3 weeks, BLE Radar Ultra every 2 months. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Custom Observer App | BLE Radar Ultra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ble-radar-ultra/id6761027882/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 151 MB | 9 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Aleut Community of St. Paul Island Tribal Government](https://appshunter.io/developer/1329178887) | [Kurenz Music GbR](https://appshunter.io/developer/544695186) |

## What reviewers say

### Custom Observer App

[App page](https://appshunter.io/ios/app/custom-observer-app/id6736385664)

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

**In-app purchases:** none


### BLE Radar Ultra

[App page](https://appshunter.io/ios/app/ble-radar-ultra/id6761027882)

This utility app helps you detect, analyze, and locate Bluetooth Low Energy (BLE) devices. It offers real-time signal monitoring, directional tracking, and data export for various use cases.

**Highlights:** Real-time BLE scanning, Distance estimation via RSSI, Live signal analysis, Directional tracking with compass, Device focus mode, Export data (CSV/JSON), Customizable scan settings

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Custom Observer App free?

Custom Observer App is free to download, with no in-app purchases.

### Is BLE Radar Ultra free?

BLE Radar Ultra is free to download, with in-app purchases available.

### Do Custom Observer App or BLE Radar Ultra have ads?

BLE Radar Ultra shows ads; Custom Observer App does not.

### Which is updated more often, Custom Observer App or BLE Radar Ultra?

Custom Observer App ships an update every 3 weeks, and BLE Radar Ultra every 2 months. Most recently, Custom Observer App was updated on October 12, 2026 and BLE Radar Ultra on October 24, 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.*