nRF Connect for Mobile vs UM_Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nRF Connect for Mobile
This app is a versatile tool for scanning, exploring, and communicating with Bluetooth Low Energy devices. It also enables your device to act as a peripheral and supports firmware updates for compatible devices.
- Scan and discover Bluetooth LE peripherals
- Communicate with Bluetooth LE devices
- Advertise as a Bluetooth LE peripheral
- Update compatible device firmware (DFU)
- Filter scanned peripherals
- Live RSSI chart
- Log BLE function calls
Read full descriptionHide full description
nRF Connect is a powerful generic tool that allows you to scan and explore your Bluetooth Low Energy (henceforth Bluetooth LE, also called Bluetooth Version 4.0+ of the Bluetooth specification) devices and communicate with them. nRF Connect also allows your iOS device to advertise as a peripheral, with full support of many of Bluetooth SIG adopted profiles. Additionally, nRF Connect supports Nordic Semiconductor’s Device Firmware Update profile (DFU) capabilities, allowing you to update compatible peripherals! + Features: • Supports DFU on all Nordic Semiconducto-powered devices. • Supports Nordic Thingy™ from Nordic Semiconductor. • Scan and discover nearby Bluetooth LE peripherals. • Filter Scanned Peripherals by Name, Manufacturer, Services (Advertised & Connected) and RSSI Level. • Parsing Multiple Formats of Bluetooth LE Advertisement Data. • Live RSSI Chart of Scanned Bluetooth LE Peripherals. • Complete iPad Support, including Multi-Tasking and Mouse Support as of 13.4. • Logs: Including BLE Function calls, and Export Function as CSV and Text. • Privacy-Oriented: Full-Disclosure of Scanned Data, Advertised Data, and User-Performed Actions held by nRF Connect. • Connecting to Any Connectable Bluetooth LE Smart Device. • Discovery of Services, Characteristics and Descriptors. • Read and Write Characteristics and Descriptors. • Enable and Disable Notifications and Indications. • Advertising as a Bluetooth LE Peripheral. • Setting up a Bluetooth LE (Peripheral) Server and Notifying/Indicating back to connected Central(s). • Low-Fat: nRF Connect for iOS is Very Small, so You Can Always Keep Us With You! >= Requirements: • iOS 16.0 and above. - Notes: nRF Connect also works with our Development Kits, which you may acquire online here: https://www.nordicsemi.com/eng/buy-online
UM_Meter
This utility app connects to a USB tester via Bluetooth to display data and system operations. It also offers data storage and sharing capabilities.
- Bluetooth connectivity to USB tester
- Real-time data display
- System operation monitoring
- Data storage
- Data sharing
Read full descriptionHide full description
Data display and system operation of the USB tester via Bluetooth, and data storage and sharing functions.
Screenshots
Verdict
The clearest difference is review sentiment: nRF Connect for Mobile at 71% against UM_Meter's 23%. nRF Connect for Mobile also leads on rating (4.5 vs 2.4) and ratings volume (478 vs 17). UM_Meter's advantage is update cadence (every 4 days vs every 5 weeks) and iOS requirement (8.0 vs 17.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
nRF Connect for Mobile holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: nRF Connect for Mobile has 478 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 71% of nRF Connect for Mobile's written reviews are positive against 23% of UM_Meter's.
nRF Connect for Mobile ships an update every 5 weeks, UM_Meter every 4 days. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.
| Parameter | nRF Connect for Mobile | UM_Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (478 ratings) — better | 2.4 (17 ratings) |
| Positive reviews | 70.7% of reviews — better | 23.3% of reviews |
| Number of ratings | 478 — better | 17 |
| Update frequency | Every 5 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Nordic Semiconductor ASA | 亮亮 刘 |
Customer experience
nRF Connect for Mobile
UM_Meter
Bugs and requests
nRF Connect for Mobile
Reported bugs
4 issues- Can't read data from Bluetooth device
- Tries to ask for Bluetooth connection when Bluetooth is off. Asks to connect to devices when Bluetooth is off. Who knows what this app is doing in the background without permission?! What ever it is , it ain't good
- Tapping "tabs" doesn't work (nothing changes in the UI). To get some response from tapping UI controls typically requires (a) launching nRF Connect, (b) switching to another app, (c) switching back to nRF Connect. I've tried uninstalling and re-downloading. Same result. This used to be the bee's knees of BLE tools but it's only worth 1 star at the moment (v2.7.11).
- Cant go past the initial announcement. The app is unresponsive to the taps.
Requested features
4 requests- Where's the mac addresses
- Max rssi limit
- Log view
- We need macros in iOS version
UM_Meter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
nRF Connect for Mobile
No in-app purchases
UM_Meter
No in-app purchases
Questions
Is nRF Connect for Mobile free?
Is UM_Meter free?
Which has better reviews, nRF Connect for Mobile or UM_Meter?
Do nRF Connect for Mobile or UM_Meter have ads?
Which is updated more often, nRF Connect for Mobile or UM_Meter?
Other comparisons
