Best SmartUI Alternatives in 2026

Updated October 2026

20 apps from visual regression testing software ranked against SmartUI on the same published basis.

SmartUI alternatives compared

#	App	Score	Free plan	From	Runs on
1	Loki	6.8	Free plan	Free	Android, iOS, Linux, Mac, self-hosted, Web, Windows
2	Diffy	6.6	Free plan	$67/mo	API, Linux, Mac, self-hosted, Web, Windows
3	Happo	6.6	Free plan	$149/mo	Android, API, iOS, Web
4	Percy	6.6	Free plan	$199/mo	Android, iOS, Web
6	Frontend Regression Validator	6.5	Free plan	Free	API, Linux, Mac, self-hosted, Web
7	Screenster	6.5	Free plan	$25/mo	API, self-hosted, Web, Windows
8	Argos	6.4	Free plan	$100/mo	API, Web
9	BackstopJS	6.4	Free plan	Free	Linux, Mac, self-hosted
10	Chromatic	6.4	Free plan	$179/mo	Web
11	AyeSpy	6.3	Free plan	Free	self-hosted
12	jest-image-snapshot	6.3	Free plan	Free	self-hosted
13	Screenshotbot	5.8	No	$0.01/mo	Android, API, iOS, Linux, Mac, self-hosted, Web, Windows
14	Sauce Labs Cross-Browser Testing	5.4	No	$39/mo	Android, API, iOS, Linux, Mac, Web, Windows
15	Vizzy	5.4	No	—	Linux, self-hosted, Web
16	Needle	5.3	No	—	Linux
17	Roborazzi	5.3	No	—	Windows, Mac, Linux
18	Visual Regression Tracker	5.3	No	—	API, self-hosted, Web
19	Applitools Ultrafast Grid	5.2	No	$667/mo	Android, API, iOS, self-hosted, Web
20	Lastest	5.2	No	—	Web
21	SnapDiff	5.2	No	—	Web

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What is the best alternative to SmartUI?

Loki, number 1 in visual regression testing software with a score of 6.8 out of 10. The others here: Diffy, Happo, Percy and 16 more.

What is the best free alternative to SmartUI?

Loki is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.