Platform Comparison

Home Assistant vs SmartThings: The Full Comparison

Both platforms control smart homes. One gives you maximum flexibility with a learning curve. The other gives you polished simplicity with cloud dependency. Here is exactly how they compare and how to migrate if you are ready to switch.

Part of our Home Assistant Ultimate Guide | See also: 3-Way Comparison (HA vs ST vs HomeKit)

~17 min read Updated March 2026

See the Comparison Migration Guide

Quick Comparison Table

Here is the head-to-head summary. Scroll down for detailed analysis of each category.

Feature	Home Assistant	SmartThings
Cost	Free software + ~$50-$150 hardware	Free app + ~$35-$130 hub
Cloud Dependency	Fully local (optional cloud)	Cloud-required (partial local)
Device Support	2,800+ integrations	~300 "Works with SmartThings" partners
Protocols	Zigbee, Z-Wave, Wi-Fi, BLE, Thread, Matter	Zigbee, Z-Wave, Wi-Fi, Thread, Matter
Automation Power	Advanced (YAML, UI, Node-RED)	Basic to Medium (Routines)
Dashboard	Fully customizable	Fixed app layout
Setup Difficulty	Moderate (technical)	Easy (app-guided)
Privacy	All data stays local	Data processed in Samsung cloud
Mobile App	Companion App (iOS/Android)	SmartThings App (iOS/Android)
Voice Assistants	Alexa, Google, Siri (via HomeKit), Assist (local)	Alexa, Google, Bixby

Detailed Platform Differences

The comparison table shows the numbers. Here is what those differences mean in daily use.

Local Control vs Cloud Dependency

This is the fundamental philosophical difference. Home Assistant runs entirely on your local network. Your automations execute on your hardware, your data never leaves your house, and everything works without an internet connection. SmartThings processes most operations through Samsung's cloud servers. If Samsung's servers go down (which has happened multiple times), your automations stop working and device control becomes unreliable.

SmartThings has improved local processing with Edge drivers (replacing Groovy cloud-based device handlers), which means some automations now run locally on the hub. But the SmartThings app and many integrations still require cloud connectivity. In Oklahoma, where severe weather regularly knocks out internet service, local control is not just a preference. It is a practical necessity for storm safety automations.

Device Ecosystem

Home Assistant's 2,800+ integrations dwarf SmartThings' ~300 official partners. More importantly, HA supports devices from brands that will never get official SmartThings support: Reolink cameras, Shelly relays, ESPHome custom sensors, Frigate NVR, and hundreds of community-maintained integrations via HACS. If a device has an API or speaks a standard protocol, someone has probably built an HA integration for it.

SmartThings counters with tighter Samsung ecosystem integration. Samsung TVs, refrigerators, washers, and Galaxy phones work seamlessly. If you are deeply invested in Samsung hardware, SmartThings offers a level of appliance integration that HA does not match out of the box (though community integrations exist for many Samsung devices).

Dashboard and Interface

SmartThings gives you a polished mobile app with a fixed layout. It looks good, it works, and you cannot change it much. Home Assistant gives you a blank canvas. Build floor plan dashboards, wall tablet interfaces, room-by-room layouts, or minimalist overviews. Install Mushroom cards for a modern look, or use picture-elements for a custom floor plan. The flexibility is unmatched, but it requires effort to build. See our Dashboard Design Guide for a complete walkthrough.

SmartThings Edge Drivers vs HA Integrations

Samsung replaced its old cloud-based Groovy platform with Edge drivers in 2022-2023. This was a significant improvement, but it works differently from Home Assistant's integration model.

SmartThings Edge Drivers

Run locally on the SmartThings hub (Lua-based)
Faster than old Groovy cloud handlers
Limited to Samsung-approved driver channels
Fewer community drivers than HA integrations
Development requires Lua and Samsung CLI tools

More Flexible

Home Assistant Integrations

2,800+ official integrations, 1,000+ HACS community integrations
All run locally (most require no cloud)
Anyone can build and share integrations via HACS
Python-based, massive developer community
Most install with a single click from the UI

Automation Comparison: Routines vs YAML/UI

Automation is where the two platforms diverge the most. SmartThings Routines are simple and accessible. Home Assistant automations are powerful and complex. Here is a concrete comparison.

SmartThings Routines: What You Can Do

"If motion detected, then turn on light"
"If time is 10 PM, then lock all doors"
"If I leave home, then set thermostat to away mode"
"If door opens AND time is after sunset, then turn on hallway light"

Limitation: Routines support basic conditions (time, device state, location) but cannot do complex logic like "if it is Tuesday AND the temperature is below 40 AND nobody has been home for 2 hours, then do X." No variables, no templates, no delays between actions, limited conditional branching.

Home Assistant Automations: What You Can Do

Everything SmartThings Routines can do, plus:
Multi-condition logic with AND/OR/NOT groups
Template conditions using sensor values, calculations, and time math
Delays, wait-for-trigger, and choose/if-then-else branching within automations
Variables and counters that persist across automation runs
Trigger on rate-of-change (e.g., "temperature dropped 5 degrees in 10 minutes")
Node-RED visual flow editor for even more complex logic

Trade-off: More power means more complexity. Simple automations can be built in the UI. Complex ones may require YAML or Node-RED.

Migration Guide: SmartThings to Home Assistant

Ready to switch? Here is a step-by-step plan that minimizes downtime. The key is running both platforms in parallel during the transition rather than doing a hard cutover.

Install Home Assistant

Install HA OS on a Raspberry Pi 4, Intel NUC, or virtual machine. Keep your SmartThings hub running. See our Ultimate Guide for hardware recommendations and installation steps.

Add SmartThings Integration

Add the SmartThings integration in HA (Settings > Integrations). Generate a Personal Access Token at account.smartthings.com. This exposes all your SmartThings devices in HA without moving anything.

Migrate Wi-Fi Devices First

Wi-Fi devices (smart plugs, bulbs, cameras) can be added to both platforms simultaneously. Add their native HA integrations (Kasa, Shelly, Hue, etc.) and verify they work in HA. Then remove them from SmartThings. No re-pairing needed.

Get a Zigbee/Z-Wave Coordinator

Purchase a Zigbee coordinator (Home Assistant SkyConnect ~$30, SONOFF Zigbee 3.0 ~$25) and/or Z-Wave stick (Zooz ZST39 ~$35) for HA. Set up ZHA or Zigbee2MQTT. This is your new radio infrastructure.

Migrate Zigbee/Z-Wave Devices (Room by Room)

Move devices one room at a time. For each device: factory reset it (removes SmartThings pairing), then pair it to your HA coordinator. Most Zigbee devices reset by holding a button for 5-10 seconds. Update your HA automations and dashboard as you go. This approach limits disruption to one room at a time.

Recreate Automations

Rebuild your SmartThings Routines as HA automations. Use the visual automation editor for simple ones and YAML for complex ones. This is also the opportunity to build more powerful automations that SmartThings could not handle. Document your SmartThings Routines before removing them.

Remove SmartThings Hub

Once all devices are migrated and automations are working in HA, you can power off and remove the SmartThings hub. Keep it in a drawer for a month in case you need to roll back anything. After a month with no issues, you are fully migrated.

Which Platform Should You Choose?

There is no universally "better" platform. The right choice depends on your priorities, technical comfort, and how you use your smart home.

Choose Home Assistant If...

You want full local control and data privacy
You have 20+ devices from multiple brands
You want advanced automations with conditions and logic
You want custom dashboards and wall tablets
You live in Oklahoma and need storm-proof automations
You enjoy tinkering and learning new technology
You want to avoid monthly subscriptions forever

Choose SmartThings If...

You want the simplest possible setup experience
You have fewer than 15 devices and basic automation needs
You are deeply invested in Samsung appliances and TVs
You do not want to maintain server hardware
Your household is not comfortable with any technical setup
You primarily want voice control through Alexa or Google
You want something that "just works" out of the box

Our recommendation: If you are reading a guide this detailed, you are probably the kind of person who would thrive with Home Assistant. The learning curve is real, but it flattens out after the first week, and the long-term flexibility is worth it. Start simple, build iteratively, and know that you can always use the SmartThings integration as a bridge during your transition.

Frequently Asked Questions

Common questions about Home Assistant vs SmartThings and migrating between platforms.

Can Home Assistant and SmartThings coexist in the same home?

Yes, and this is actually a common transition strategy. Home Assistant has a native SmartThings integration that connects to your SmartThings hub and exposes all of your SmartThings devices as HA entities. This means you can start building Home Assistant dashboards and automations while keeping your SmartThings hub running. Over time, you can migrate devices directly to HA (via Zigbee or Z-Wave coordinators) and eventually remove the SmartThings hub entirely. The integration requires a Samsung account and a SmartThings Personal Access Token, which you can generate at account.smartthings.com/tokens.

How difficult is migrating from SmartThings to Home Assistant?

It ranges from straightforward to moderately complex depending on your setup. The easy part: Wi-Fi devices (smart plugs, bulbs, cameras) work with HA without any migration since they connect independently. The medium part: Zigbee devices need to be re-paired to an HA Zigbee coordinator (SkyConnect, Conbee II), which means unpairing from SmartThings and re-pairing to HA one at a time. The hard part: recreating your SmartThings Routines as HA automations and rebuilding your dashboard. Budget 2-4 hours for a small setup (10-20 devices) or a full weekend for a larger one (50+ devices). The HA Ultimate Guide covers the full installation process.

Can I reuse my SmartThings hub with Home Assistant?

Not directly as a Zigbee/Z-Wave radio. The SmartThings hub uses proprietary firmware that does not expose its radios to other platforms. However, you can use the SmartThings integration in Home Assistant to access devices connected to your SmartThings hub over the cloud API. This adds latency (cloud round-trip) and means devices depend on SmartThings cloud being online. For a fully local setup, you will need a separate Zigbee coordinator (Home Assistant SkyConnect at ~$30 or SONOFF Zigbee 3.0 at ~$25) and/or a Z-Wave stick (Zooz ZST39 at ~$35) to pair devices directly to HA.

Will my Zigbee devices work with Home Assistant if I leave SmartThings?

Yes. Zigbee is a standard protocol, and most Zigbee devices that work with SmartThings will work with Home Assistant via a Zigbee coordinator. You will need to unpair (factory reset) each device from SmartThings and then pair it to your HA Zigbee coordinator. The process varies by device but typically involves holding a button for 5-10 seconds until the LED blinks. Home Assistant supports Zigbee via two methods: ZHA (built-in Zigbee Home Automation integration, simpler) or Zigbee2MQTT (runs as an add-on, supports 3,000+ devices, more advanced). Both support the vast majority of SmartThings-compatible Zigbee devices.

What are SmartThings advantages over Home Assistant?

SmartThings has genuine advantages in specific areas: (1) Easier initial setup — the SmartThings app walks you through everything with a polished UI, while HA requires more technical knowledge. (2) Official Samsung device support — Samsung TVs, appliances, and Galaxy phones integrate seamlessly. (3) No dedicated hardware needed — the SmartThings Station doubles as a wireless charger. (4) Less maintenance — Samsung handles updates, server uptime, and security patches. (5) Matter/Thread hub — the latest SmartThings hubs are Thread border routers out of the box. If you value simplicity over flexibility and do not mind cloud dependency, SmartThings is a solid choice. Home Assistant wins on local control, privacy, customization, and advanced automation.

Ready to Switch to Home Assistant?

We help Oklahoma homeowners migrate from SmartThings, Alexa, and other platforms to Home Assistant. Hardware selection, device migration, automation setup, and dashboard design. All configured and tested before we leave.

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