Watchlog vs BLESerial HM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Watchlog
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Bluetooth Pressure monitoring and logging software for up to 8 connected sensors. Pressure peak capture. Export results to CSV files for further analysis. Calculation channels e.g. P1-P2. Graphical or numerical display of connected sensors.
BLESerial HM
This utility app provides a direct serial terminal connection to HM-10 and CC2541 Bluetooth Low Energy modules. It allows real-time sending of commands and receiving of data without cables, featuring smart alerts for specific data patterns and full configurability for custom firmware.
- Connects to HM-10/CC2541 BLE modules
- Real-time command sending and data receiving
- Scans for nearby BLE devices
- Auto-reconnect functionality
- Configurable display formats (ASCII/hex)
- Smart alerts for data patterns
- Supports custom firmware UUIDs
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The dedicated serial terminal for HM-10 and CC2541 Bluetooth Low Energy modules. BLE Serial HM-10 connects your iPhone or iPad directly to any HM-10 or compatible device and lets you send commands and receive data in real time — no cables, no adapters, no fuss. Built specifically for the HM-10 / CC2541 serial service (FFE0 / FFE1), it works out of the box with popular modules and custom BLE firmware alike. **CONNECT IN SECONDS** Scan for nearby HM-10 and CC2541 devices and see their name, advertised services, manufacturer data, and live signal strength at a glance. Tap to connect. Auto-reconnect brings you straight back to your device every time you open the app. **SERIAL CONSOLE** A smooth scrolling console displays all incoming and outgoing data, with sent text highlighted for easy reading. Adjust font size, line endings, and display format (ASCII or hex) to suit your workflow. **SMART ALERTS** Set text patterns to watch for in incoming data. When a match is found, the app notifies you immediately — ideal for monitoring autonomous devices or catching error conditions. **FULLY CONFIGURABLE** Supports both the HM-10 (FFE0/FFE1) and CC2541 service profiles. The service and characteristic UUIDs can be adjusted in Settings for custom firmware. Supports both standard and 128-bit UUIDs. **CLEAN AND FOCUSED** No ads. No subscriptions. No unnecessary permissions. Just a fast, reliable connection to your HM-10 hardware. **WANT MORE?** Check out BLE Serial Pro — it supports nRF52 in the same app, and shows a live console strip so you can see device responses without switching views. See examples here: https://ednieuw.nl/BLESerial/BLESerialUsage.html
Screenshots
Verdict
The clearest difference is price: Watchlog at Free against BLESerial HM's $2.99. Watchlog also leads on update cadence (every 3 weeks vs every 6 months) and iOS requirement (10.0 vs 15.6). BLESerial HM's advantage is chart position (#177 vs unranked). On ads, in-app purchases 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
Watchlog is free to download; BLESerial HM costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Watchlog ships an update every 3 weeks, BLESerial HM every 6 months. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.
| Parameter | Watchlog | BLESerial HM |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #177 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 35 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Hydrotechnik UK Test Engineering Ltd | Ed Nieuwenhuys |
In-app purchases
Watchlog
No in-app purchases
BLESerial HM
No in-app purchases
