Best A/B Testing Tools in 2026
Updated
In short: Confidence by Spotify is ranked #1 of 50 as of 4 October 2026, ahead of DevCycle and Firebase Cloud Messaging. The best-ranked option with a free plan is DevCycle. The lowest first paid tier on this page is Crazy Egg at $2.42/mo.
A/B testing tools let teams compare variations and assess responses across experiments. Compare test types and audience targeting, then weigh whether a visual editor, feature flags, or server-side testing fits the way you plan to run tests. Mobile SDK availability and supported platforms are relevant comparison points when your work includes mobile experiences. Free-plan availability and paid-from pricing add cost context. The entries include Confidence by Spotify, DevCycle, Firebase Cloud Messaging, and GrowthBook, as well as LaunchDarkly Experimentation. Think about the audiences, platforms, and experiment setups you need to support as you compare the listed capabilities.
50 A/B testing tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
14 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Confidence by SpotifyWeb · Android · iPhone · API | Three bars | — | 3 of 6 | $449/mo | 6.5 | |
| 2 | DevCycleWeb · Android · iPhone · API · Extension | Three bars | — | 3 of 6 | $500/mo | 6.5 | |
| 3 | Firebase Cloud MessagingWeb · Android · iPhone · API · Extension | Three bars | — | 3 of 6 | Free | 6.5 | |
| 4 | GrowthBookWeb · Android · iPhone · Self-hosted · API | Three bars | — | 3 of 6 | $40/mo | 6.5 | |
| 5 | LaunchDarkly ExperimentationWeb · Android · iPhone · API | Three bars | — | 3 of 6 | $108.33/mo | 6.5 | |
| 6 | MidaWeb · Android · iPhone · API | Three bars | — | 3 of 6 | $299/mo | 6.5 | |
| 7 | Omniconvert ExploreWeb · Android · iPhone · Self-hosted · API · Extension | Three bars | — | 3 of 6 | Free | 6.5 | |
| 8 | StatsigWeb · Android · iPhone · API | Three bars | — | 3 of 6 | $150/mo | 6.5 | |
| 9 | Zoho PageSenseWeb · Android · iPhone · API · Extension | Three bars | — | 3 of 6 | Free | 6.5 | |
| 10 | Crazy EggWeb · API · Extension | Two bars | — | 1 of 6 | $2.42/mo | 6.4 | |
| 11 | FeatureflipWeb · Android · iPhone | Three bars | — | 3 of 6 | $49/mo | 6.4 | |
| 12 | Optimizely ExperimentationWeb · Android · iPhone | Three bars | — | 3 of 6 | Free | 6.4 | |
| 13 | MtrixWeb | Two bars | — | 1 of 6 | $700/mo | 6.3 | |
| 14 | AmplitudeAPI | Two bars | — | 0 of 6 | Free | 6.2 | |
| 15 | Adobe TargetWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 16 | ApexWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 17 | ConductricsWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 18 | Dynamic YieldWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 19 | ExperimentlyWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 20 | MonetateWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.4 |
| 21 | AB TastyWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.3 |
| 22 | abtestWeb | One bar | — | — | 1 of 6 | $10/mo | 5.3 |
| 23 | DashX ExperimentationWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 5.3 |
| 24 | NativeblocksAndroid · iPhone | No signal | — | — | 2 of 6 | — | 5.3 |
| 25 | Nelio A/B TestingWeb | No signal | — | — | 1 of 6 | — | 5.2 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which A/B testing tool is ranked first on Freedom251?
Confidence by Spotify is ranked #1 of 50 with a score of 6.5. DevCycle is second and Firebase Cloud Messaging third.
How many of these have a free plan?
14 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Crazy Egg has the lowest first paid tier we found: $2.42/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.