BLE Scanner 4.0 vs CRUMB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BLE Scanner 4.0
Explore and manage Bluetooth Low Energy devices with this comprehensive utility. Discover, connect, and analyze BLE signals, including iBeacon and Eddystone data. Ideal for developers and users tracking smart gadgets.
- Instant BLE device discovery with RSSI
- Radar view for device distance visualization
- Smart filtering by name, UUID, RSSI, and more
- iBeacon and Eddystone scanning
- Data export to CSV
- Custom BLE advertising packet creation
- Secure GATT service and characteristic exploration
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No. 1 Scanner Utility app for BLE devices and trusted by developers, hobbyists, and everyday users worldwide, BLE Scanner 4.0 is your go-to app for Bluetooth Low Energy exploration. Easily discover, connect, and manage your Bluetooth Low Energy (BLE) devices. Whether you’re a developer testing BLE device signals or a user tracking your smart gadgets, BLE Scanner gives you powerful tools to scan, analyze, and connect all in one app. Why BLE Scanner? - Instant Discovery: Quickly find nearby BLE devices with real-time signal strength (RSSI). Lower the number the closer you are to the source i.e. -25 is very near and -80 is far from your BLE devices. - Radar View: Visualize device distance and movement around you. - Smart Filters: Search by name, UUID, RSSI, or major/minor values. - iBeacon & Eddystone Support: Scan, monitor, and analyze beacon data seamlessly. - Data Export: Save scan history or export logs to CSV for advanced analysis. - Custom Advertising: Create your own BLE advertising packets for testing & IoT projects. - Upload data to the cloud: Upload your BLE device data on your own cloud using HTTPS or MQTT URL. - Secure Connections: Connect to GATT services and explore characteristics. Built for Developers & Engineers - Inspect GATT services & characteristics - Read and write BLE characteristics - Debug BLE communication issues - Ideal for firmware testing & validation Privacy First • No account required • No personal data collected • BLE scanning performed locally on your device Privacy Policy: https://www.bluepixeltech.com/appVersion/privacy-policy-blescanner.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Follow us on: Facebook: https://www.facebook.com/blescanner X: https://x.com/blescanner Comments, questions, or suggestions? Visit us: www.bluepixeltech.com or Email us: blescanner@bluepixeltech.com
CRUMB
Explore and build electronic circuits in an interactive 3D environment. Learn circuit basics, experiment with components, and analyze performance with built-in tools without the risk of damaging real parts.
- Interactive 3D circuit construction
- Wide selection of electronic components
- Study transistors and audio filtering
- Program EEPROMs
- Built-in oscilloscope and analysis views
- Prototype analysis before real-world construction
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CRUMB offers an easy to use and interactive introduction to electronic circuits Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program For the beginner, it is possible to learn and understand the basics of interactivity, and for the enthusiast it is possible to analyse and perfect prototypes before constructing real world models Using the built in oscilloscope and analysis views, it is possible to see clearly the interaction between components from within the wires themselves Through community feedback and suggestion, there will be many more components and features added. For a full feature list and development schedule please visit the website http://www.crumbsim.com
Screenshots
Verdict
The clearest difference is price: BLE Scanner 4.0 at Free against CRUMB's $7.99. BLE Scanner 4.0 also leads on ratings volume (615 vs 144). CRUMB's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 6 weeks). On rating, review sentiment, ads 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
BLE Scanner 4.0 is free to download; CRUMB costs $7.99 up front. BLE Scanner 4.0 sells 3 in-app purchases, starting at $2.99 per month. CRUMB asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for BLE Scanner 4.0 against 4.4 for CRUMB. Both are backed by a comparable volume of ratings — 615 and 144 respectively. Written reviews are what separate them: 58% of BLE Scanner 4.0's written reviews are positive against 56% of CRUMB's.
BLE Scanner 4.0 ships an update every 6 weeks, CRUMB weekly. Both last shipped on October 24, 2026.
| Parameter | BLE Scanner 4.0 | CRUMB |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 4.3 (615 ratings) | 4.4 (144 ratings) — better |
| Positive reviews | 57.6% of reviews — better | 55.6% of reviews |
| Number of ratings | 615 — better | 144 |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #95 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 496 MB |
| Age rating | 4+ | 4+ |
| Developer | Bluepixel Technologies LLP | Vital Group Limited |
Customer experience
BLE Scanner 4.0
CRUMB
User reviews
BLE Scanner 4.0
From 615 App Store ratingsWhat we love
- 🚀 Detects Bluetooth devices well
- 👍 Useful for development and testing
- 🔍 Helps find lost Bluetooth devices
Room to improve
- 🐛 Crashes or doesn't work on some devices
- 🤔 Unclear or confusing user interface
- 🔋 Drains battery quickly
- 🔒 Privacy concerns with permissions
CRUMB
From 144 App Store ratingsWhat we love
- 👍 Great for beginners
- 💡 Good for learning new skills
- ✨ Simple to put things together
- 🎨 Great graphics
- 🧩 Plenty of components
Room to improve
- ❌ Very limited components
- ❌ Lacks modern components
- 🐛 Crashing frequently
- 🐛 App crashes when using corners
- 🐛 Crashing on Mac
Bugs and requests
BLE Scanner 4.0
Reported bugs
3 issues- Stuck in update loop after latest version
- Search and filtering functions not working
- Crashes when trying to add new iBeacons
Requested features
4 requests- Add distance or location information for detected devices
- Improve filtering and sorting of detected devices
- Provide more detailed device information
- Add support for more Bluetooth device types
CRUMB
Reported bugs
11 issues- App crashes when using the “corners” option on jumper wires
- Experienced some crashing on Mac
- Component images do not rotate
- Power rails are backwards related to real life breadboards
- Program counters (74HC161) do not reset to 0 on a reset signal
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- 74HC245 enable pin should be labeled active low but it’s not
- EEPROM sometimes corrupts the data saved in the HEX editor
- Many components, most commonly the transistor, lock their image in place even if deleted
- Buttons and switches will react to touching the screen even when not touching the component location
- Rotation is broken on the app version
- UI can be a little flaky at times
Requested features
31 requests- Implement modern components (TI IC, LTC series)
- Add 12 segment display
- Add Arduino and other microcontrollers
- Add a spot to code Arduino/microcontrollers
- Allow custom wire colors
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- Create circuit boards with custom colors
- Add pre-made circuit boards
- Ability to create custom electronic components from circuits
- Improve corner-to-corner wire mode for breadboard/power rail connection
- Add snap rotations and positions
- Add CD4511 component
- Add oscilloscope
- Add signal generator
- Add BJT transistors
- Add op amp
- Add MOSFETs
- Add transformers
- Add relays
- Add AC power supply
- Add music player for amplifier learning
- Add more examples of classic circuits
- Simulation pausing
- Add hotkeys to desktop version
- Add resistance monitoring view
- Allow push buttons to be placed across rails
- Add 'Show Pins' view to app version
- Add schematic feature
- Add manual
- Add more functions and components
- Add more examples
- PC integration
In-app purchases
BLE Scanner 4.0
- Advertiser Plan$2.991 Month
- Cloud Subscription$4.991 Month
- Ultimate Subscription$5.991 Month
CRUMB
No in-app purchases
Questions
Is BLE Scanner 4.0 free?
Is CRUMB free?
Which has better reviews, BLE Scanner 4.0 or CRUMB?
Do BLE Scanner 4.0 or CRUMB have ads?
Which is updated more often, BLE Scanner 4.0 or CRUMB?
Other comparisons
