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Arduino Cloud vs Apple HomeKit

Arduino Cloud logo

Arduino Cloud

Software

Cloud platform for Arduino IoT devices and applications

From
Free
Rated
-
Full reviewWebsite
Apple HomeKit logo

Apple HomeKit

Software

Apple's secure smart home platform integrated with Siri

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; Apple HomeKit requires Apple device for setup and remote access; limited interoperability with non-Apple devices
  • They diverge on capability: Arduino Cloud covers Device Connectivity, Apple HomeKit covers Siri Integration.

Where they differ

Only the attributes on which Arduino Cloud and Apple HomeKit actually diverge.

Attributes where Arduino Cloud and Apple HomeKit differ
AttributeArduino CloudApple HomeKit
Pricing modelsubscriptionUnknown
PlatformsArduino devices, Cloud, Mobile app, Web dashboardiOS, iPadOS, macOS, Apple TV, HomePod, Web (via iCloud.com)
Founded20052014

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

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 Apple HomeKit

  • Siri Integration
  • End-to-End Encryption
  • Automation Scenes
  • Remote Access
  • HomePod
  • Apple TV
  • Apple Watch
  • Third-party accessories

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 Apple HomeKit
  • Over-the-air firmware updates to deployed devicesnot Apple HomeKit
  • Logging sensor data and charting it over timenot Apple HomeKit
  • Triggering notifications from device thresholdsnot Apple HomeKit
  • Classroom IoT projects on the School plannot Apple HomeKit

Apple HomeKit

  • Unified control of multi-vendor smart accessoriesnot Arduino Cloud
  • Time, location, and sensor-triggered automationsnot Arduino Cloud
  • Siri voice control of accessoriesnot Arduino Cloud
  • Remote access via a Home Hubnot Arduino Cloud
  • Grouping accessories into scenesnot 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

Apple HomeKit

  • Requires Apple device for setup and remote access; limited interoperability with non-Apple devices
  • HomeKit devices require manufacturer certification, limiting product selection compared to alternatives
  • Automations are more limited compared to open platforms like Home Assistant or professional systems

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

Apple HomeKit

Free
  • HomeKit (free)Free
    • Local control of HomeKit devices
    • Siri voice control
    • Device automations
  • Home hub (requires device purchase)$null/mo
    • Remote access
    • HomeKit Secure Video (free with iCloud+ 2TB)
    • HomeKit automations
  • iCloud+ 2TB (required for Secure Video)$9.99/month
    • HomeKit Secure Video 4K (in iOS 27)
    • 2TB iCloud storage
    • Private email relay

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 Apple HomeKit if

  • You need siri integration.
  • You want to start without paying.
  • You work on iOS, iPadOS, macOS, Apple TV, HomePod, Web (via iCloud.com).
  • You also want end-to-end encryption.
Apple HomeKit review

Questions people ask

Is Arduino Cloud or Apple HomeKit better?
Neither clearly leads. Arduino Cloud starts at Free and Apple HomeKit at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arduino Cloud or Apple HomeKit?
Arduino Cloud starts at Free and Apple HomeKit at Free.
Does Arduino Cloud or Apple HomeKit run on more platforms?
Arduino Cloud runs on Arduino devices, Cloud, Mobile app, Web dashboard. Apple HomeKit runs on iOS, iPadOS, macOS, Apple TV, HomePod, Web (via iCloud.com).
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 Apple HomeKit is typically brought in for.
What can Arduino Cloud do that Apple HomeKit cannot?
Arduino Cloud covers Device Connectivity, Cloud Storage, Real-Time Sync, Security. Apple HomeKit covers Siri Integration, End-to-End Encryption, Automation Scenes, Remote Access.

Answered from the vendors’ own pages

Apple HomeKit: Does Apple HomeKit require a home hub?

A home hub is required for remote access and automations. Apple TV 4K, HomePod (2nd gen), or HomePod mini can serve as hubs.

Source
Apple HomeKit: Is HomeKit data encrypted?

Yes. HomeKit uses end-to-end encryption for all data and communications with HomeKit devices, keeping all home data secure.

Source
Apple HomeKit: Does HomeKit support Thread?

Yes. Thread-enabled accessories require a Thread-enabled home hub such as Apple TV 4K, HomePod mini, or iPhone running iOS 18. Thread provides improved reliability and responsiveness for HomeKit devices.

Source
Apple HomeKit: What devices are compatible with HomeKit?

HomeKit supports thousands of certified devices including lights, locks, thermostats, cameras, and plugs from manufacturers like Philips Hue, Yale, Ecobee, and Logitech.

Source
Apple HomeKit: Does HomeKit support Matter?

Yes. HomeKit supports Matter, enabling HomeKit devices to work with other ecosystems like Amazon Alexa and Google Home on the same Matter protocol.

Source
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