About TesterArmy
TesterArmy is an AI agent that tests websites, web apps, and mobile apps through real user journeys described in plain English. It runs on every GitHub pull request and on a schedule, returning screenshots, recordings, and bug reports. It is built for engineering teams that want QA coverage without writing or maintaining test scripts.
What is TesterArmy?
What is TesterArmy?
TesterArmy replaces scripted end-to-end tests with an AI agent that clicks through an application the way a user would. Teams describe a test in plain language, such as creating and deleting an API key, and the agent turns it into steps, runs them, and reports whether the flow passed. It can handle login flows, OAuth, and one-time passcodes sent by email or SMS, and it does not need access to source code.
Tests can run automatically on every GitHub pull request, in CI after deployments, or on a schedule to monitor production. Results include screenshots, recordings, and actionable bug reports. The website also shows an agent prompt that can be pasted into a coding agent such as Claude Code to create tests from the terminal, and it offers a free way to start testing.
TesterArmy is part of Y Combinator's Spring 2026 batch and operates from San Francisco and Warsaw. It was founded by Szymon Rybczak (CEO) and Oskar Kwasniewski. The company says it has more than 50 clients, including Resend, bolt.new, and Novu. In September 2026 it announced a $1.2 million pre-seed round.
Pros
- Plain-English tests remove the need to write and maintain scripts
- Covers web apps, websites, and iOS and Android apps
- Handles logins, OAuth, and email or SMS verification codes
- Runs on every pull request and on a schedule with screenshots and recordings
Cons
- AI-driven tests may need tuning for highly dynamic or complex interfaces
- Very early-stage company that raised a pre-seed round
- Teams with existing Playwright or Cypress suites will need to plan a migration or run both
How to Use TesterArmy
- 1Sign up for free
Create an account on the TesterArmy website.
- 2Add your app
Provide a URL or an installable mobile app build, plus any test accounts needed to log in.
- 3Describe a test
Write the user journey in plain English, or have a coding agent create it using TesterArmy's agent prompt.
- 4Automate runs
Connect GitHub to run tests on every pull request and schedule production monitoring, then review results and bug reports.