Quark-Z

Pack A · QA & Synthetic Monitoring

If it only passed in the lab, it didn't pass.

Emulators and virtual devices are approximations, and the most protected apps refuse to run on them at all. Flows ship untested, and the first report of a broken payment comes from a user.

Concept preview of the Sentinel journey overview: scheduled user journeys running on real, fully certified devices, with one contactless payment failure flagged for review.
Concept preview · product in development

Real-device testing in your pipeline

Functional and regression testing on real, fully certified devices, reproducible enough to live inside CI/CD.

Test the flows emulators can't

SMS one-time codes, contactless payments, QR onboarding, BLE pairing: the journeys your users actually perform, tested end to end on real hardware.

QA the apps that refuse the lab

Banking and government apps refuse emulators and modified devices, so labs never see them run. On real, fully certified devices they install and run as they would on any user's phone, and QA finally happens.

Synthetic monitoring on real devices

After release, the same user journeys keep running on real hardware, on a schedule. When a payment or a login breaks, you find out from Sentinel, not from your users.

Discover the app

Point the AI at your app with no script and no help. It explores the way a first-time user would and scores how intuitive the design actually is.

Break the app

The AI behaves like users at their worst: wrong taps, abandoned flows, nonsense input. Every bug it forces out is recorded with the steps to reproduce it.

Follow the business process

Describe a process in plain words, checkout, onboarding, a refund, and the AI walks it end to end on a real device. No scripts, no configuration.

Real inputs, synthetic data

The AI types, taps, and waits like a person, and brings its own synthetic test data. The app under test sees realistic usage, not a robot.

Concept preview of a run detail in Sentinel: the failed tap-to-pay step with recorded evidence showing what the app displayed, alongside the real device that ran the journey.
Concept preview · product in development

Contact

Sentinel is pre-launch. These are the conversations we're looking for.

Investors

We're always open to conversations with investors who work in deep tech. Book a meeting and we'll show you where Sentinel is.

Book a meeting

Engineers & practitioners

We're interviewing practitioners in security, privacy, compliance, and mobile QA. Thirty minutes of your experience will shape what we build.

Share your experience

Design partners

We work with a small number of teams as design partners, tuning Sentinel against their real apps before launch. Partners are first onto the beta. Slots are limited.

Apply for a slot

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Quark-Z is building Sentinel, a platform that shows you what mobile software actually does by observing it on real devices, invisibly. Founded in Spain, working globally.

Quark-Z S.L.contact@quark-z.comBuilt in Spain