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IoT & Smart Home · head to head

Arduino Cloud vs ESPHome

Arduino Cloud logo

Arduino Cloud

IoT & Smart Home

Cloud platform for Arduino IoT devices and applications

From
Free
Rated
-
Full reviewWebsite
ESPHome logo

ESPHome

IoT & Smart Home

Custom firmware for ESP8266/ESP32 smart home devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Arduino Cloud the free plan allows 2 connected devices, 5 variables each and one day of data retention; ESPHome eSPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects
  • They diverge on capability: Arduino Cloud covers Device Connectivity, ESPHome covers YAML Configuration.

Where they differ

Only the attributes on which Arduino Cloud and ESPHome actually diverge.

Attributes where Arduino Cloud and ESPHome differ
AttributeArduino CloudESPHome
Pricing modelsubscriptionopen-source
PlatformsArduino devices, Cloud, Mobile app, Web dashboardESP8266, ESP32, Docker, Raspberry Pi
Founded20052018

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (IoT & Smart Home).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Arduino Cloud

  • Device Connectivity
  • Cloud Storage
  • Real-Time Sync
  • Security
  • Arduino IDE
  • Mobile app
  • REST API
  • Integration services

Only in ESPHome

  • YAML Configuration
  • OTA Updates
  • Home Assistant Native
  • Custom Components
  • Home Assistant
  • MQTT
  • API
  • Native integration

What people use each for

The jobs each tool is most often brought in to do.

Arduino Cloud

  • Connecting Arduino boards to a cloud dashboardnot ESPHome
  • Over-the-air firmware updates to deployed devicesnot ESPHome
  • Logging sensor data and charting it over timenot ESPHome
  • Triggering notifications from device thresholdsnot ESPHome
  • Classroom IoT projects on the School plannot ESPHome

ESPHome

  • Building custom smart home sensors and switches on ESP32 hardwarenot Arduino Cloud
  • Replacing vendor cloud firmware on ESP based devices with locally controlled firmwarenot Arduino Cloud
  • Integrating DIY devices into Home Assistant over a native API or MQTTnot Arduino Cloud

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Arduino Cloud

  • The free plan allows 2 connected devices, 5 variables each and one day of data retention
  • Free accounts are limited to 25 compilations a day and 10 trigger notifications a day
  • The Maker plan at $72 a year lifts devices to 25 and retention to 3 months, still for a single user
  • Team pricing jumps to $1,000 a year
  • Two years of data retention and unlimited ingestion require Enterprise

ESPHome

  • ESPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects
  • Support for ESP32-H2, RP2040 and other newer chips is documented as less mature
  • Large displays and some sensors do not work well on ESP8266 because of its limited RAM, which is roughly a fifth of an ESP32

Pricing, plan by plan

Arduino Cloud

Free
  • MakerFree
    • 2 devices
    • Basic features
    • Cloud access
  • Maker Plus$7/month
    • Up to 10 devices
    • Advanced features
    • Better storage

ESPHome

Free
  • CommunityFree
    • Full firmware
    • Home Assistant integration
    • Custom sensors

Which should you pick?

Choose Arduino Cloud if

  • You need device connectivity.
  • You want to start without paying.
  • You work on Arduino devices, Cloud, Mobile app, Web dashboard.
  • You also want cloud storage.
Arduino Cloud review

Choose ESPHome if

  • You need yaml configuration.
  • You want to start without paying.
  • You work on ESP8266, ESP32, Docker, Raspberry Pi.
  • You also want ota updates.
ESPHome review

Questions people ask

Is Arduino Cloud or ESPHome better?
Neither clearly leads. Arduino Cloud starts at Free and ESPHome at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arduino Cloud or ESPHome?
Arduino Cloud starts at Free and ESPHome at Free.
Does Arduino Cloud or ESPHome run on more platforms?
Arduino Cloud runs on Arduino devices, Cloud, Mobile app, Web dashboard. ESPHome runs on ESP8266, ESP32, Docker, Raspberry Pi.
Can I use Arduino Cloud for free?
Both have a free tier, so you can try either at no cost before committing.
What is Arduino Cloud best used for?
Arduino Cloud is most often used for connecting arduino boards to a cloud dashboard, over-the-air firmware updates to deployed devices, logging sensor data and charting it over time, triggering notifications from device thresholds. Of those, connecting arduino boards to a cloud dashboard and over-the-air firmware updates to deployed devices are not what ESPHome is typically brought in for.
What can Arduino Cloud do that ESPHome cannot?
Arduino Cloud covers Device Connectivity, Cloud Storage, Real-Time Sync, Security. ESPHome covers YAML Configuration, OTA Updates, Home Assistant Native, Custom Components.
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