ComboToolPlus

Developed by AppCombo, its main draw is on-device JavaScript that talks to UART and other serial gear, so quick checks happen without a laptop. The ComboToolPlus APK stays small and clean, which suits field work and tight storage. Below are the core tools and plugins that make routine DIY and technician tasks easier.

• Write and execute JavaScript against UART and serial peripherals for quick tests.
• Use CH341A programmer support to read, back up, and write BIOS chips.
• Capture and send Modbus frames with the RS485 Converter plugin in the field.
• Turn the phone into a temperature meter using the IR_Temper Sensor plugin.
• Check UV exposure with the UV sensor plugin and note readings on site.
• Operate over USB OTG with common adapters for stable serial connections.
• Keep original ComboTool functions in a tiny, focused package for makers.

JavaScript serial scripting

Users write and run JavaScript on Android to open ports, set basic parameters, and read or write bytes. ComboToolPlus keeps diagnostics light: a short script can capture frames, send a test command to a sensor, then log responses for quick review.

CH341A programmer support

This support reads, backs up, writes, and verifies common BIOS chips through a CH341A over USB OTG. With firm contact on a SOIC clip or socket, tasks stay predictable and results are checked before disconnecting. Using the ComboToolPlus latest version helps maintain reliable field workflows.

Download and install ComboToolPlus

To get started, download ComboToolPlus from APKPure; the file is small and usually completes in moments. You can download the latest APK of ComboToolPlus from the same page, and installation follows standard Android prompts.

After install, connecting a CH341A or RS485 converter may trigger a USB access dialog; allow it to communicate with the device. First runs might ask for storage or permission to access hardware. When ready, start with a small read or script to confirm stable cabling and consistent responses.