Comparison

Bluetooth BLE Device Finder vs Observing

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

Head to head
About

Bluetooth BLE Device Finder

Quickly locate misplaced Bluetooth devices using signal strength and a radar interface. Track devices in the background and receive notifications when they are lost, with the last known location recorded on a map.

Highlights
  • Find lost Bluetooth devices
  • Track devices in the background
  • Receive disconnection notifications
  • View last detected time and location
  • Use radar interface for proximity
  • Show signal strength and estimated distance
  • Display BLE device details
Features
Read full description

*** Now you can find your lost Bluetooth device quickly, before its battery runs out! *** This app can help you Find Your Lost AirPods, iPhone, iPad, AirTag, Apple Watch, and many other Bluetooth devices in seconds. Use it when you or your family misplace the device – and save the money you'd otherwise need to spend on a new one! HOW TO USE IT: 1. Run the app. Find and select your lost device in the list. 2. Move around slowly and keep watching the data (i.e., the signal strength and estimated distance) on the radar screen. When you get close to your lost device, the spot will turn red on the radar screen. 3. When the signal strength is over 90 and the estimated distance is 0 - 0.5m, look around. Your device won't be far away! Note: When you try to find your device, please walk slowly and watch the radar carefully. Find your device ASAP, or its battery will run out. Note: Your Bluetooth device must be powered on and within a detectable range. TRACKING FUNCTION: You may enable tracking for devices in the background by turning on the switch next to the device on the list. You will receive a notification when your tracked device is disconnected/lost. The application will ping the tracked devices from time to time and remember the last location and time the device was seen. KEY FEATURES: • Find your lost Bluetooth device (with BLE signal advertising). The app is easy to use! • Track your device constantly in the background with this app. A notification will tell you when your tracked device is 'Lost' (i.e., Disconnected). Also, the last detected time and location will be recorded for you. It's very useful when you’re travelling and want to keep your devices safe. ^ • Find your device using our radar. It's fun! No need to read a manual. ^ • Show hints, signal strength and the estimated distance between you and your lost device to help you find it quickly. ^ • Show the last seen (detected) time and last known location of your lost device on a map. ^ • Show your device's BLE (Bluetooth Low Energy) details such as UUID, RSSI, Services, etc. ^ • The following devices can be found/tracked by this app: - AirPods 1/2/3/4, AirPods Pro 1/2, AirPods Max - AirTag - iPhone 5/6/7/8/X/11/12/13/14/15/16, iPad 3/4/5/6/7/8/9/10/A16, iPad mini 2/3/4/5/6/A17Pro, iPad Air 1/2/3/4/5/M2/M3, iPad Pro 1/2/3/4/5/6/M4, iPod Touch 6/7 - Apple Watch Series 1/2/3/4/5/6/7/8/9/10/SE1/SE2/Ultra1/Ultra2 - Apple Pencil 1/2/Pro - MacBook, MacBook Air, MacBook Pro, iMac, iMac Pro, Mac Pro, Mac Mini, Mac Studio - Microsoft Gear, Band 1 & 2 - Samsung Earbuds, Galaxy Watch - JBL Tune, Vibe, Tour Pro, Charge, Flip 3 - Bellabeat Leaf - Garmin Watches - Many other Bluetooth headphones, earphones, and speakers (e.g. Bose, Sony, Google, Jabra, Logitech, Anker, Sennheiser, Technics, etc.) NOTE: The app can locate any BLE (Bluetooth Low Energy) device that is broadcasting a Bluetooth signal. ^ Requires In-App Purchase. Please contact support if you need help. Thank you! Privacy Policy: http://www.99mobileapp.com/pp.html Terms: http://www.99mobileapp.com/terms/index.html

About

Observing

Read full description

Observing-iR is for coding past or current events on an iPhone. Observing-iR is not a stand-alone but an add-on application. It works like a remote keyboard. It is free and gets its task via iCloud from paid master software Observing-R. Time and effort of running a task are minimal. Credentials need to be entered only once.  Loading and running last only a couple of seconds. Codings are saved automatically on iCloud where they are retrieved from the master software Observing-R. Users cannot inspect their past codings. This is intended to prevent users from reactive coding, i.e. to avoid that the current coding process is influenced by past ones. Typical application:  A physician or a psychotherapist wants his patient to collect relevant data during a day, a week, a month, a year, … The physician or psychotherapist sets up a code-system covering terms for events, sensitivities, physical or mental states, behaviours, … that are individually tailored to a patient's problem. Patients should monitor themselves and select from the code-system those terms that characterise their momentary situation.

Screenshots

Bluetooth BLE Device Finder4 screens
Observing3 screens

Verdict

The call

The clearest difference is in-app purchases: Observing at none against Bluetooth BLE Device Finder's 4. Observing also leads on update cadence (every 9 days vs every 2 months). On price, ads, device support and iOS requirement 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. Bluetooth BLE Device Finder sells 4 in-app purchases, starting at $3.99 per 7 days. Observing asks for nothing beyond the download.

UpkeepUpdate frequency

Bluetooth BLE Device Finder ships an update every 2 months, Observing every 9 days. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Bluetooth BLE Device Finder versus Observing: the parameters behind the verdict, then further details
ParameterBluetooth BLE Device FinderObserving
PriceFreeFree
Rating4.4 (27K ratings) — better—
Positive reviews39.3% of reviews—
Number of ratings27K — better—
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.013.0
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperRaymond NGGerhard Fassnacht

Bugs and requests

Bluetooth BLE Device Finder

Reported bugs

3 issues
  • Unable to detect certain Bluetooth devices like Apple Pencil
  • App crashes or freezes on some devices
  • Persistent pairing requests from unknown devices

Requested features

4 requests
  • Ability to name/label Bluetooth devices
  • Option to use feet/yards instead of meters
  • Improved device filtering and organization
  • More precise tracking and direction indicators

Observing

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Bluetooth BLE Device Finder

Subscriptions3
  • One Week Premium$3.997 Days
  • One Month Premium$9.991 Month
  • One Year Premium$14.991 Year
One-time1
  • Lifetime Premium$19.99
None

Observing

No in-app purchases

Questions

Is Bluetooth BLE Device Finder free?
Bluetooth BLE Device Finder is free to download, with in-app purchases available.
Is Observing free?
Observing is free to download, with no in-app purchases.
Do Bluetooth BLE Device Finder or Observing have ads?
Neither Bluetooth BLE Device Finder nor Observing shows ads.
Which is updated more often, Bluetooth BLE Device Finder or Observing?
Bluetooth BLE Device Finder ships an update every 2 months, and Observing every 9 days. Most recently, Bluetooth BLE Device Finder was updated on October 20, 2026 and Observing on October 8, 2026.

Other comparisons