# FullStory — Conversion Optimization FullStory by FullStory, Inc. holds a panel rating of 1/5 from 6 AI judges (category median 1.5/5), as of 2026-10-27. Provenance: provenance unknown; sovereignty: not determined. - Vendor: FullStory, Inc. (https://www.fullstory.com) - Category: [Conversion Optimization](https://whats-best.ai/software/conversion-optimization.md) - Provenance (editorial classification): provenance unknown - Canonical page: https://whats-best.ai/software/conversion-optimization/fullstory - Alternatives: https://whats-best.ai/software/conversion-optimization/fullstory/alternatives ([markdown](https://whats-best.ai/software/conversion-optimization/fullstory/alternatives.md)) - Data as of: 2026-10-27 · evaluated 2026-10-27 · oldest source captured 2026-10-27 **AI-generated.** Every score, rationale and verdict here is written by a panel of AI judges from public evidence — an analysis, not a hands-on test. Every fact quotes the vendor page it was read from. No score can be bought. How scores are made: https://whats-best.ai/methodology ## At a glance - Vendor: FullStory, Inc. - Headquarters: Not stated on the vendor’s pages as of 27 Oct 2026 - Data hosting: Not stated on the vendor’s pages as of 27 Oct 2026 - Free plan: Not stated on the vendor’s pages as of 27 Oct 2026 ## The panel's verdict The captured pages present FullStory as a behavioural analytics platform — session replay, heatmaps, funnels — rather than a testing product. Scoring is strongest on data and integrations, clustering at 6-7: an open developer API, out-of-the-box integrations, analytics-ready warehouse views and raw event data via cloud storage are documented. It is weakest on experimentation scope, statistical rigour (0) and performance impact (0): we found no public information on A/B testing, a visual editor, named statistical methods, script size or Core Web Vitals. Consent and tracking scored 2-3: first-party cookies and local storage for sessions, honoured Global Privacy Control and Do Not Track signals, and a persistent opt-out cookie are documented, with nothing published on the script's pre-consent behaviour. Sovereignty ranges 1-3: the contracting entity is FullStory, Inc. and the privacy policy states personal information may be collected, processed and stored in the United States and other countries; lower scores point to no public information on EU residency or a named subprocessor list, higher ones credit stated Data Privacy Framework compliance. No prices are published; buying runs through a demo request. **Speaks for it:** - Data and integrations scored 6-7, with a documented open API, out-of-the-box integrations, analytics-ready warehouse views and raw event data via cloud storage - Consent and tracking scored 2-3, with first-party cookies and local storage for session continuity, honoured Global Privacy Control and Do Not Track signals, and a persistent opt-out cookie - Predictive models such as churn prediction and customer lifetime value are documented, built on behavioural data joined with warehouse metrics - The privacy policy states customer and user data is not sold to third parties and that identification across disparate, unrelated domains is not attempted **Held against it:** - Experimentation scope scored 0-1, with no public information on A/B or split testing, a visual editor, server-side SDKs or feature flags - Statistical rigour scored 0, with no public information on a named statistical method, sample-size guidance or protections against peeking or sample-ratio mismatch - Performance impact scored 0, with no published figures on script size, loading behaviour or Core Web Vitals - Sovereignty scored 1-3, with FullStory, Inc. as contracting entity, processing and storage possible in the United States and other countries, and no public information on EU residency or a named subprocessor list - No prices, tiers or traffic metric are published; the documented buying path is a demo request **Best for:** - You need behavioural analytics — session replay, heatmaps, funnels, journey maps — to find where visitors struggle - Your team wants raw event data and analytics-ready views landing in its own warehouse or cloud storage for re-analysis and predictive models - You want an open developer API and out-of-the-box integrations to blend behavioural data with CRM and marketing automation tools **Avoid if:** - You need to run A/B or split tests behind feature flags — experimentation scope scored 0-1 on the documented pages - You must defend results with documented statistics — ask the vendor: the public pages we read do not show it - Your visitor data must remain in the EU — the pages state processing and storage may occur in the United States and other countries, and we found no public information on EU data residency ## Scores by judge and criterion Scores out of 5, each judge scoring independently against the published rubric (v1). "n/r" = not rated: the vendor publishes no price. | Criterion | The Growth Lead | The E-Commerce Manager | The Product Engineer | The CRO Consultant | The Data Protection Officer | The Skeptic | | --- | --- | --- | --- | --- | --- | --- | | Experiment types & delivery | 0/5 | 0/5 | 0/5 | 0/5 | 0.5/5 | 0/5 | | Statistical method & guardrails | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 | | Consent & visitor tracking | 1.5/5 | 1/5 | 1/5 | 1.5/5 | 1.5/5 | 1.5/5 | | Snippet performance & flicker | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 | | Analytics, data export & integrations | 3/5 | 3.5/5 | 3.5/5 | 3/5 | 3/5 | 3/5 | | European sovereignty | 1/5 | 0.5/5 | 1/5 | 0.5/5 | 1.5/5 | 1/5 | | Pricing transparency | n/r | n/r | n/r | n/r | n/r | n/r | | **Weighted verdict** | **1/5** | **0.5/5** | **1/5** | **1/5** | **1.5/5** | **1/5** | ### The judges - **The Growth Lead** (v1.0): Runs the testing programme for a German marketing team and reports uplift to the board. Wants a visual editor the team can use without a developer, targeting that goes beyond the URL, and results she can defend when finance asks where the promised revenue went. - **The E-Commerce Manager** (v1.0): Owns a shop where a tenth of a second of load time shows up in the conversion rate. Wants personalisation that can be tested against a control, a snippet that does not flicker the product page, and a traffic-based price that does not jump a tier every December. - **The Product Engineer** (v1.0): Ships experiments behind feature flags and would rather not ship a third-party script at all. Wants server-side SDKs for the stack in use, edge delivery, metrics computed in the warehouse the team already trusts, and an API good enough to build internal tooling on. - **The CRO Consultant** (v1.0): Sets up testing programmes for several clients and has to recommend a platform each can afford and defend. Reads for multi-project management, clean analytics integration, a consent setup a client's DPO will sign off, and a traffic metric she can estimate before the contract. - **The Data Protection Officer** (v1.0): Has to answer whether the test script may run before the consent banner is answered, and usually finds the vendor has not said. Wants the storage keys listed, a documented consent-pending mode, visitor data processed in the EU, and a published subprocessor list that includes the CDN. - **The Skeptic** (v1.0): A statistician who has watched too many "winners" regress to zero. Reads for the method by name, what stops a team from peeking, sample ratio mismatch checks and multiple-comparison corrections — and treats a "probability to beat" without documented assumptions as marketing. ## European sovereignty — proven facts Built only from facts on the vendor's own pages; a dimension we could not prove is left open, never scored as zero. Headline: not determined. | Dimension | Finding | Points | Source | |---|---|---|---| | Legal entity | Not determined | — | — | | Ownership | Not determined | — | — | | Data residency | Not determined | — | — | | Subprocessors | Not determined | — | — | ## Key facts Each fact is the vendor's own statement, cited to the source page it was read from ([S*n*] → Sources). **Compliance** - Children age: 16 [S4] - Do not track: yes [S4] - Dpf membership: EU-U.S. DPF · UK Extension · Swiss-U.S. DPF [S4] - Eea response time: 30 [S4] - Google API limited use: yes [S4] - Nevada no sale: no [S4] - No data sale services: no [S4] - No profiling: no [S4] - Opt out cookie: all sites using Fullstory Services · persistent opt-out cookie required · yes [S4] - Privacy security page: Site offers a Privacy & Security page [S1] **Data** - Retention children deletion: deleted as soon as possible upon discovery [S4] **Hosting** - Storage location: United States · yes [S4] **Integrations** - Developer API: yes [S1] - Open API: yes · yes [S5] - Share categories: service providers (billing, IT, hosting, payments, marketing, accounting, audit, tax) · analytics providers · advertising partners · social media platforms · affiliates · acquiring entities in corporate events · legal authorities [S4] **Legal** - Cookie categories: essential · functional · analytics · targeting or advertising [S2] - Cookie ga optout: https://tools.google.com/dlpage/gaoptout [S2] - Cookie gpc honored: yes [S2] - Cookie list available: yes [S2] - Cookie optout link: yes · Do Not Sell or Share My Personal Information link on homepage [S2] - Cookie policy entity: Fullstory, Inc. and its affiliates [S2] - Cookie policy last updated: 2025-04-11 [S2] - Cookie policy may update: Policy may be updated [S2] - Entity: Fullstory, Inc · Atlanta · London · Sydney · Singapore [S1] - Entity: Fullstory, Inc · 2026 [S3] - Locations: Atlanta · London · Sydney · Singapore [S3] - Privacy contact email: privacy@fullstory.com [S4] - Privacy hub: yes [S3] - Privacy policy: yes [S3] - Privacy policy effective date: 2025-05-19 [S4] **Product** - AI agents: Agents detect friction, flag anomalies, and execute fixes [S1] - AI models use: Predictive models such as churn prediction and customer lifetime value [S6] - Anonymous user data: yes [S6] - Customer journey: Fullstory Analytics / Customer Journey: uncover digital behaviors to remove friction and improve user experience [S1] - Customer journey blending: Behavioral data blends with CRM, marketing automation, and analytics tools [S6] - Data activation: Fullstory Anywhere: activate data to create personalized user experiences [S1] - Demo request form: business email · first name · last name · company name · country · how can we help you [S6] - Developer API listed: Developer API [S5] - Employee experience: Fullstory Workforce: improve workflows that shape employees' experience [S1] - Features: Fullcapture · Session Replay · Mobile Analytics · Product Analytics · Sentiment Signals · Heatmaps · Funnels & Conversions · Journey Maps · User Segments · Dashboards · Private by Default · Rage Click [S1] - Fullstory mcp: MCP interface to uncover drop-offs and revenue impact [S1] - Fullstory mcp listed: Fullstory MCP [S5] - Historical custom analysis: yes [S6] - Industries: Retail · Food & Bev · Travel · FinServ · Gaming · SaaS [S1] - No cleanup structured data: Structured data from the start, eliminating cleanup [S6] - No cross domain tracking: no [S4] - No multi site profiles: yes [S4] - On demand privacy training: all customers · yes [S3] - Overview: Capture real user behavior and put it to work for AI and experience improvement [S1] - Self monitoring: yes [S4] - Sms consent: reply STOP · yes [S4] - Storyai opportunities: StoryAI Opportunities: uncover drop-offs and revenue impact [S1] - Subtext: Subtext by Fullstory · session context for AI coding agents, including screenshots with masking, page structure, user actions, network data, console errors [S4] - Tracking technology: single website session continuity · yes · yes [S4] - Warehouse vs cloud storage: simplified, analytics-ready views · raw event data [S6] - Workflow intelligence: Workflow Intelligence: see how workforce moves and where AI investments pay off [S1] **Support** - Demo request form: yes [S5] - Help center: Help Center · Learn · Deep Dives · User Community · yes [S1] ## Questions ### Is FullStory European? Not determined: the vendor’s pages as captured do not say where FullStory is based. ### Where does FullStory store data? Not stated on the vendor’s pages as of 27 Oct 2026. ### Does FullStory have a free plan? Not stated on the vendor’s pages as of 27 Oct 2026. ### What are the best alternatives to FullStory? As of 27 Oct 2026, the panel rates [Convert Experiences (3.5/5)](https://whats-best.ai/software/conversion-optimization/convert-experiences), [GrowthBook (3/5)](https://whats-best.ai/software/conversion-optimization/growthbook) and [Varify.io (3/5)](https://whats-best.ai/software/conversion-optimization/varify) highest among the other 34 Conversion Optimization products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is [Varify.io](https://whats-best.ai/software/conversion-optimization/varify) (EU-Made). Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering). The full list, with European products first: [FullStory alternatives](https://whats-best.ai/software/conversion-optimization/fullstory/alternatives). ## What this page leaves out - We found no public information on pricing on the pages we read (fullstory.com, fullstory.com/legal/cookie-policy, fullstory.com/privacy-resources, fullstory.com/legal/privacy-policy, fullstory.com/platform/integrations, fullstory.com/platform/anywhere/warehouse). If the vendor publishes it somewhere else, send us the page. - 14 product facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. - 7 integrations facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. - 5 compliance facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material. - 1 legal fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. - 1 support fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material. - 1 sovereignty dimension could not be confirmed on the vendor’s own pages and is shown as unknown. ## Sources - [S1] Vendor page: https://www.fullstory.com (checked 2026-10-27) - [S2] Legal notice — found from the homepage: https://www.fullstory.com/legal/cookie-policy/ (checked 2026-10-27) - [S3] Consent & visitor tracking — found from sitemap: https://www.fullstory.com/privacy-resources/ (checked 2026-10-27) - [S4] Consent & visitor tracking — found from sitemap: https://www.fullstory.com/legal/privacy-policy/ (checked 2026-10-27) - [S5] Analytics, data export & integrations — found from sitemap: https://www.fullstory.com/platform/integrations/ (checked 2026-10-27) - [S6] Analytics, data export & integrations — found from sitemap: https://www.fullstory.com/platform/anywhere/warehouse/ (checked 2026-10-27) --- Cite as: whats-best.ai, "FullStory — Conversion Optimization", AI panel analysis, as of 2026-10-27. https://whats-best.ai/software/conversion-optimization/fullstory Corrections: https://whats-best.ai/correct/1061?target=page