# IoMBTC Wireless Data Comm — Connecting meters via BLE

> Connecting meters via BLE (iPhone/iPad app by Yuan-an CHEN.)

- Source: https://appshunter.io/ios/app/iombtc-wireless-data-comm/id6747885902 (this page in markdown: same URL + `.md`)
- Developer: [Yuan-an CHEN](https://appshunter.io/developer/1823194515)
- Category: Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 42 MB
- Languages: American English
- Released: 2025-08-01
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/iombtc-wireless-data-comm/id6747885902/reviews.md

## What is IoMBTC Wireless Data Comm?

This App is part of the IoMBTC family. It connects to digital multimeters (DMMs) via Bluetooth to collect measurement data for display, analysis, and logging.


## Version history (last 2 releases)

### 1.0.74 — 2025-09-25

Improvements from Ver 1.0.73 to 1.0.74:
- Minor improvement on data streaming to DB.
Improvements from Ver 1.0.70 to 1.0.73:
- Added Eco Mode to reduce the real-time logging screen refresh rate. This helps lower GPU usage and prevents overheating or crashes on entry-level smartphones.
- Disabled battery optimization to enhance app reliability when running in the background.
- Database size limited to 20 GB to ensure stable performance and efficient resource usage.
Improvements from Ver 1.0.65 to 1.0.70:
- Graphic Display Smoothness: Improved UI performance by displaying one page at a time without retrospective rendering to prevent overload. The application's sampling rate remains unchanged, even during extended logging periods.
- BLE Connection Stability: Resolved an issue with BLE disconnections by debugging a low-level infinite loop in the BLE communication layer.
- Reconnection Reliability: Improved reconnection behavior by addressing the same low-level BLE loop issue as above.
- Real-Time Logging and Data Saving: Each reading is now written directly to the database immediately upon receipt from the meter, without using RAM buffering. This enhances both performance and reliability.
- Data Loss Prevention: As readings are saved directly to the database file in real time, data remains intact even if the phone powers off unexpectedly during logging. Data loss is effectively prevented.
- Data Saving Completion: Data saving now completes automatically once logging ends—no additional processing is required afterward.
- CSV File Format Consistency: Improved consistency in the CSV data file format for better compatibility and ease of use.

### 1.0.65 — 2025-08-01

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*