Meticulous
YC S21London, GB · Founded 2021 · 15 employees · Hiring · 5 known investors
Meticulous automatically detects regressions in web applications by replaying user sessions at scale, helping front-end developers build more reliable software. The platform uses distributed replay systems and algorithms to identify code path coverage and differentiate meaningful test sessions.
Founders & leadership· Y Combinator alumni (S21)
Meticulous was founded in 2021 by Gabriel Spencer-Harper and Quentin Spencer-Harper.
GS
Gabriel Spencer-HarperinCEO and co-founder (hiring gtm operators, customer success, forward deployed engineers)Gabriel Spencer-Harper previously worked as a software engineer at Opendoor and Dropbox. He is currently building software for automated bug detection in web applications.
QS
Quentin Spencer-HarperFounder
Investors · 5
Funding
SEC filings, press & company announcements$30M disclosed across 2 rounds · 2026
Source: company announcements and press reports — follow each round's link for the claim.
Competitors · 8
by search overlap
LogRocket176 shared keywordsLogRocket provides session replay, product analytics, and AI-powered issue detection for web and mobile applications. The platform helps product teams understand user behavior, identify technical and UX problems, and monitor frontend performance.
Mimo121 shared keywordsMimo offers an interactive mobile app for learning software development through guided coding lessons and hands-on projects, serving beginners who want to pursue careers as web, full-stack, Python, or front-end developers. The platform combines written explanations with real-world coding exercises, project building, AI-assisted tutoring, and certificate programs.
BrowserStack110 shared keywordsBrowserStack provides a cloud-based software testing platform for scaling test automation across 3,500+ browser-device combinations on a real device cloud, aimed at development and QA teams. Its offerings cover cross-browser and browser automation testing, WCAG accessibility compliance testing, AI-driven test management, and visual testing, with integrations for major frameworks and CI/CD pipelines.
TestMu AI97 shared keywordsTestMu AI (formerly LambdaTest) is an AI-agentic quality engineering cloud that helps engineering teams automate end-to-end testing across web, mobile, and AI applications. Its products include autonomous test agents (Kane AI), agent testing for chatbots and voice assistants, AI visual testing, a real device cloud, and the HyperExecute test orchestration platform.
Testsigma95 shared keywordsTestsigma is a quality intelligence platform that uses AI agents to detect testing gaps at each code commit and generate self-healing automated tests across web, mobile, API, and Salesforce. It serves engineering and QA teams, scoring release confidence with a human approval step before shipping.
OpenReplay79 shared keywordsOpenReplay is a session replay and product analytics platform that enables product teams to record user interactions with web applications, identify friction points, and troubleshoot issues. The product serves software development and product teams across various industries.
DhiWise77 shared keywordsRocket (by DhiWise) is an AI-powered app builder that turns a single natural-language prompt into a full-stack application, generating UI/UX, production-ready code in the user's chosen framework, auto-configured backends (database schemas, authentication, API endpoints), and deployment via GitHub, Netlify, or custom domains. It targets both non-technical creators and developers who want to build and launch web and mobile apps without extensive coding.
Educative76 shared keywordsEducative offers online courses and learning paths in software development, machine learning, and technical interview preparation. The platform serves individuals seeking to develop in-demand technology skills.
Companies competing with Meticulous for the same Google search keywords, organic and paid, via search-intersection analysis.
Companies House · registry record
View on Companies House ↗- Registered name
- METICULOUS LIMITED
- Company number
- 04920098
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 Oct 2003
- Registered office
- 9a Leicester Road, Blaby, Leicester, LE8 4GR
- Nature of business (SIC)
- 96090 — Other service activities n.e.c.
- Accounts
- last made up to 30 Sept 2025 · next due 30 Jun 2027
- Confirmation statement
- last made up to 2 Oct 2025 · next due 16 Oct 2026
Current officers · 3
- Daniel John Tippetts — secretary, appointed 6 Oct 2003
- Daniel John Tippetts — director, appointed 6 Oct 2003
- Denise Frances Weal — director, appointed 6 Oct 2003
Source: Companies House public register · retrieved 24 Jul 2026. Contains public sector information licensed under the Open Government Licence v3.0.
In the news
Meticulous Raises $15M Series Athesaasnews.com · Jul 2026
SLS Client Meticulous Raises $15MM Series A Round from Chemistry – Silicon Legal Strategy | Entrepreneurial Legal Counselsiliconlegal.com · Jul 2026Frequently asked questions
- What does Meticulous do?
- Meticulous automatically detects regressions in web applications by replaying user sessions at scale, helping front-end developers build more reliable software. The platform uses distributed replay systems and algorithms to identify code path coverage and differentiate meaningful test sessions.
- Who founded Meticulous?
- Meticulous was founded by Gabriel Spencer-Harper, Quentin Spencer-Harper in 2021.
- Who are Meticulous's investors?
- Meticulous's investors include Coatue Management, Outcast Ventures, Y Combinator, Chemistry, Menlo Ventures.
- How much funding has Meticulous raised?
- Meticulous has disclosed $30M raised across 2 rounds.
- Where is Meticulous headquartered?
- Meticulous is headquartered in London, GB.