Comparison

Custom Observer App vs BLE Radar Ultra

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Custom Observer App

Features
Read full description

The Custom Observer app, enables data collection using standard methods and protocols to produce credible and actionable insights that address needs and priorities of communities for environmental and ecological monitoring. Our mission is to empower communities to lead in environmental monitoring and research by branding their own app environment in which they can combine diverse data collection methods to drive effective ecosystem stewardship and resource management. The Custom Observer App is a modern approach to caring for and stewarding the land. Data collection priorities are set by communities and collaborating researchers and can range from environmental data related to extreme weather events such as wind speed or storm surge, or ecological indicators such as species distribution and phenology, presence of invasive species or declines in important subsistence species. The app supports the employment of rigorous protocols for data validity and reliability, blending scientific and social methodologies. Moreover, the app supports the assurance of data accuracy by providing detailed quality assurance and control mechanisms. The Custom Observer app is the technical infrastructure for community networks to lead in defining research priorities, generating and managing access to data equitably, and ensuring that future ecological and environmental monitoring strategies, all while also enabling community networks to apply their own branding and look and feel to the app. The Custom Observer App’s core function is to support the implementation of community-driven monitoring programs. Data Collection Programs are sets of related observation activities that group various data collection forms/surveys. The Programs module in the app organizes data collection forms, users, and observations into manageable categories for a defined network of communities and organizations. On the app, an ‘observation’ is a single data point collected in a survey/form related to certain species, environmental variables or events at a specific point in space and time within a data collection program. The mobile app supports the entry of observations while offline, making the system ideal for use in remote areas and tribal communities. The data from observations go through quality assurance and are used in analysis and reporting. Geospatial and mapping functionality supports program effectiveness by allowing users to use relevant GIS map layers and maintain a spatially organized context to their data, contributing to more comprehensive record keeping and informed decision-making.

About

BLE Radar Ultra

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
Read full description

BLE Radar Ultra – Find, analyze, and locate Bluetooth devices like a pro. BLE Radar Ultra helps you precisely detect and track Bluetooth Low Energy (BLE) devices. Whether you're searching for a lost device, analyzing signals, or testing BLE hardware – this app provides powerful tools in a modern interface. • Smart Scanning: Instantly detect all BLE devices nearby and sort them by signal strength and distance. • Live Signal Analysis: Monitor RSSI values in real-time with smoothing and stability ratings for reliable results. • Signal Chart: Visualize signal history and identify stable trends instead of single spikes. • Direction Finder: Use compass support to determine the most likely direction of a device. • Device Focus Mode: Track a single device with detailed information like stability, trend, and last seen. • Custom Settings: Flexibly adjust scan speed, signal smoothing, and list behavior. • Export & Tools: Export device lists (CSV/JSON) or start fresh with a clean list anytime. Ideal for: • Finding lost Bluetooth devices • Testing BLE hardware • Analyzing Smart Home setups • Developers and tech enthusiasts Note: Distance display is based on signal strength (RSSI) and may vary depending on the environment and obstacles. Main Features: • Real-time BLE scan • Distance estimation via RSSI • Signal chart with smoothing • Directional tracking • Stability and trend analysis • Favorites & Device Focus • Export (CSV / JSON) • Adjustable scan settings

Screenshots

Custom Observer App4 screens
BLE Radar Ultra4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Custom Observer App versus BLE Radar Ultra: the parameters behind the verdict, then further details
ParameterCustom Observer AppBLE Radar Ultra
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size151 MB9 MB
Age rating17+4+
DeveloperAleut Community of St. Paul Island Tribal GovernmentKurenz Music GbR

In-app purchases

None

Custom Observer App

No in-app purchases

1 purchases

BLE Radar Ultra

One-time1
  • Remove Ads$1.99

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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