# ESP32 Loader (Blynk Uploader)

> Easy way to flash ESP32 development board with Android App via USB OTG

Canonical page: [https://chrome-stats.com/d/com.bluino.esp32loader](https://chrome-stats.com/d/com.bluino.esp32loader)

## Overview

- **ID:** `com.bluino.esp32loader`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Bluino
- **Category:** TOOLS
- **Downloads:** 28,692
- **Rating:** 3.79 / 5 (340 ratings)
- **Version:** 1.1
- **Last updated:** 2022-07-29
- **First published:** 2020-12-06
- **Publisher country:** ID
- **Data as of:** 2026-09-11
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.bluino.esp32loader)
- **Website:** [https://www.bluino.com](https://www.bluino.com/)
- **Privacy policy:** [https://www.bluino.com/p/arduino-language-reference-privacy.html](https://www.bluino.com/p/arduino-language-reference-privacy.html)

## Description

ESP32 Loader (Blynk Uploader) is an Android app designed to simplify uploading compiled Arduino binaries to any Expressif ESP32 development board via USB OTG and WiFi (OTA). It supports various USB chips like CDC/ACM, FTDI, PL2303, CH34X, and CP210X, making it highly compatible. The app also features a serial monitor for debugging and can automatically update WiFi SSID, password, and token during uploads.

The Pro version enhances usability with no ads, access to Google Drive storage, and multiple upload widget buttons for quick operations. ESP32 Loader requires Android devices with USB Host OTG support and offers an accessible way to manage IoT projects on the go. Users should be aware of potential risks, including hardware or data damage, when using this tool.

## Rankings

- #376,248 — Overall

## Review summary

Users appreciate that the app is functional, fast, and that it fills a niche with few alternatives. However, many complain about intrusive ads, connection problems with ESP32 boards, limited features in the free version, and performance issues like freezing or sluggishness. Device support is inconsistent, leading to initialization failures on certain boards.

### Pros

- Is usable and does what it's supposed to do
- Fast and powerful application
- No alternative app available for uploading firmware to ESP32 boards

### Cons

- Too many intrusive advertisements, including pop-ups and upsells
- Frequent connection issues with ESP32 devices, often showing 'no USB connected'
- Limited functionality in free version; unable to upload meaningful firmware binaries
- App performance issues such as freezing and making the phone sluggish
- Does not support many devices and sometimes fails to initialize specific boards

## Similar extensions and apps

- [ESP8266 Loader (Blynk Uploader](https://chrome-stats.com/d/com.bluino.esploader) — 101,071 users, 4.08 / 5
- [ESPFlash-ESP32/ESP8266Flasher](https://chrome-stats.com/d/io.serialflow.espflash) — 14,305 users, 3.40 / 5
- [CADIO Flasher](https://chrome-stats.com/d/com.egycad.cadioflasher) — 3,316 users
- [ESP32\_Flasher](https://chrome-stats.com/d/com.esp_flash.esp_flash_app) — 44,516 users, 3.40 / 5
- [ESP8266 Development Assistant](https://chrome-stats.com/d/com.espterm) — 1,458 users
- [NT ESP SPI Flash Programmer](https://chrome-stats.com/d/com.nt.EpSpiFlashProgrammer) — 517 users
- [ArduinoDroid - Arduino/ESP IDE](https://chrome-stats.com/d/name.antonsmirnov.android.arduinodroid2) — 2,601,080 users, 3.49 / 5
- [Bluino Loader - Arduino IDE](https://chrome-stats.com/d/com.bluino.bluinoloader) — 278,717 users, 3.54 / 5
- [Flash SPI Tool](https://chrome-stats.com/d/com.diamon.curso) — 1,445 users
- [ESP32 Camera Wifi Robot Car](https://chrome-stats.com/d/com.bluino.esp32camerawifirobotcar) — 14,245 users, 4.45 / 5
- [Mobile Ide Arduino & esp32](https://chrome-stats.com/d/com.kerry.mobileidearduinoesp32) — 147 users
- [ESP8266 WiFi Configurator (EWC](https://chrome-stats.com/d/com.pozitifdenge.ewc) — 29,018 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.bluino.esp32loader)