Ship more AI-built features.
Without breaking your app.
Describe critical journeys in plain English. Diffie runs them in a real browser, saves them as a regression suite, and checks every PR with pass/fail video evidence.
Describe what to test, one step per line.
Login Credentials (optional)
Add login credentials so the agent can explore authenticated pages.
No account or test code required. Real-browser run and video evidence included.
Test what's new. Protect what already works.
Describe the feature you just built in plain English. Diffie tests it in a real browser, adds it to your regression suite, and reruns the suite on every PR—with pass/fail video evidence.
Write the journey in plain English
Watch it run in a real browser
Review pass/fail video evidence
Run the suite on every PR
Find out what features Diffie comes with
Write test in English
See the AI agent perform your test live in a real browser. You'll get a video replay of every run so you can see exactly what happened.
Watch It Run
See the AI agent perform your test live in a real browser. You'll get a video replay of every run so you can see exactly what happened.
Schedule and Automate
Set your tests to run automatically. As often as you want. Catch breakages before users ever notice.
Web and Mobile Automation
Diffie runs your app in a real browser or on a real Android or iOS device. It logs everything that happens, giving you a full picture of what's going on inside your app.
History and Insights
Track all your test runs over time and gain insights into your application's stability and performance.
Notifications on Failure
Get instant alerts when tests fail so you can fix issues before they impact your users.
Find out what features Diffie comes with
Write test in English
See the AI agent perform your test live in a real browser. You'll get a video replay of every run so you can see exactly what happened.
Watch It Run
See the AI agent perform your test live in a real browser. You'll get a video replay of every run so you can see exactly what happened.
Schedule and Automate
Set your tests to run automatically. As often as you want. Catch breakages before users ever notice.
Web and Mobile Automation
Diffie runs your app in a real browser or on a real Android or iOS device. It logs everything that happens, giving you a full picture of what's going on inside your app.
History and Insights
Track all your test runs over time and gain insights into your application's stability and performance.
Notifications on Failure
Get instant alerts when tests fail so you can fix issues before they impact your users.
Why Diffie?
You're building faster than ever thanks to AI.
But speed brings fear — fear of breaking your app. Diffie removes that fear. It makes sure every feature that worked yesterday still works today. So you can push code without holding your breath.
Diffie doesn't just test your app. It protects your confidence.
How much are flaky E2E tests costing your team?
Drop in your numbers. We'll show you the engineering hours and dollars disappearing into reruns, investigations, and one-off fixes every month.
Estimated waste per month
~63.4 hours
≈ $9.5k / month, $114k / year at $150/hr
Diffie's self-healing tests cut that roughly in half: ~$4.8k saved / month. Starter is $100 / mo.
See pricing →Estimate based on ~5 minutes of engineer attention per flake plus a small share of flakes that get fully investigated. Numbers update live as you type.
Pricing
Free
$0
$10 free credits to try, no credit card
Real-browser runs with video replay
Tests history and live progress
Upgrade anytime to keep going
Every plan includes English-to-code test authoring and browser video playback.
Founder’s note
We built Diffie because we hit the same wall you're hitting now. We were coding faster with AI, running multiple agents in parallel, and it was thrilling — until we realized we were scared to deploy. We didn't know what we'd broken. Diffie was born from that fear. It's the testing agent we wished we had — the one that makes sure your app stays unbroken, no matter how fast you're moving.
Mission: Help developers ship faster by making testing effortless.
Vision: A world where testing is as natural and quick as writing English.
Anand Narayan