Bluetooth BLE Device Finder vs Deep Work & Focus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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*** 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
Deep Work & Focus
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Observatory is a calm focus and deep-work app. Start a session on one task, stay with it, and see real patterns in how you focus. Free to start. When you drift or pause, that time isn't counted as focus. When you focus, it counts. And a quiet day is never treated as a failure. FOCUS Start a focus session on a single task and stay with it A glowing orb that keeps you company while you work, with no pressure and no gamification Drift detection: leave the app and a gentle reminder brings you back Pauses and drifts are tracked, and never counted as focus Six focus environments: Rainfall, Tide, Hearth, Nightfall, Drift and Forest Ambient focus sounds to help you settle in See your calendar alongside your day, and turn events into focus tasks PROGRESS Today's focus inside rings for your daily goal, active days and on-task rate Clear charts of your focus time, with more detail on shorter ranges A heatmap of when your sessions tend to start across the week Records and a Grind Score, drawn from your own sessions Your trajectory over time, so you can see how you're changing Focus time per project and per task, including estimate versus actual A COMPANION THAT LEARNS YOU Discovers your patterns: when you focus best, your strongest days, how your sessions run deepest Tells you what it notices in plain words, based on your own sessions Suggests small experiments, and gives an honest read on whether they worked A weekly review that brings your week together and shows what changed A Story of your focus to look back on When there isn't enough data to say something, it says so MAKE IT YOURS Focus themes, Home backdrops, orb colours and sounds Light and dark mode A daily focus goal and a weekly consistency goal Every number and sentence in Observatory comes from your own sessions. It won't flatter you, and it won't shame you. DETAILS https://observatoryfocus.com observatoryapp2026@gmail.com OBSERVATORY PREMIUM The core focus timer, stats for the week and month, recent trends and a few projects are free, always. Premium unlocks: Every pattern and the complete picture of how you focus Personalised suggestions and experiments Your full history and long-term trends The weekly review All focus themes, Home backdrops, sounds and orb colours Unlimited projects Premium is available as a monthly or annual subscription, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://observatoryfocus.com/privacy Download Observatory and do the work that matters.
Screenshots
Verdict
The clearest difference is update cadence: Deep Work & Focus at every 4 days against Bluetooth BLE Device Finder's every 2 months. Bluetooth BLE Device Finder's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases 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
Both are free to download. Bluetooth BLE Device Finder sells 4 in-app purchases, starting at $3.99 per 7 days and Deep Work & Focus sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Bluetooth BLE Device Finder ships an update every 2 months, Deep Work & Focus every 4 days. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.
| Parameter | Bluetooth BLE Device Finder | Deep Work & Focus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (27K ratings) — better | — |
| Positive reviews | 39.0% of reviews | — |
| Number of ratings | 27K — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 3 MB | 125 MB |
| Age rating | 4+ | 4+ |
| Developer | Raymond NG | Rohan Agarwal |
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
Deep Work & Focus
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Bluetooth BLE Device Finder
- One Week Premium$3.997 Days
- One Month Premium$9.991 Month
- One Year Premium$14.991 Year
- Lifetime Premium$19.99
Deep Work & Focus
- Monthly7 Days trial$4.991 Month
- Annual7 Days trial$29.991 Year
- Lifetime$79.99
Questions
Is Bluetooth BLE Device Finder free?
Is Deep Work & Focus free?
Do Bluetooth BLE Device Finder or Deep Work & Focus have ads?
Which is updated more often, Bluetooth BLE Device Finder or Deep Work & Focus?
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