Comparison
A BrowserStack alternative for performance testing
BrowserStack is excellent at what it was built for: functional, cross-browser QA at enormous device scale. But if the question you keep asking is “how fast does this actually run on a real phone?”— framerate, frame times, jank — you need a tool that measures performance as its core output. That's DoesItRunOn.
The honest comparison
| BrowserStack | DoesItRunOn | |
|---|---|---|
| Built to answer | Does it render and function correctly? | Does it hit its framerate target? |
| FPS / frame-time metrics | Not a core feature | The core output |
| Jank & thermal throttling | — | Measured per device over time |
| WebGL / canvas workloads | Supported but unmeasured | First-class |
| Device list | Thousands of browser/OS combos | Curated performance spread, incl. 5-year-old mid-rangers |
| Getting started | Test suites, SDKs, configs | Paste a URL (+ optional script) |
| CI gating | Functional pass/fail | FPS budgets per device |
| Entry price | From ~$29–39/user/mo (live testing) | From $29/mo (early access) |
When BrowserStack is the right choice
Keep (or pick) BrowserStack when your problem is functional coverage: verifying layouts, flows and compatibility across hundreds of browser and OS combinations, running Selenium/Appium suites, or reproducing a bug on one specific device. Nothing in this category matches its breadth.
When you need a performance-first alternative
Choose DoesItRunOn when correctness isn't the worry — smoothness is. Typical cases: a WebGL game or three.js experience that flies on your laptop and slideshows on a Galaxy A52; a marketing site with heavy animation that marketing insists must feel premium on mid-range Androids; a canvas-based tool whose users complain about lag you can't reproduce.
We run your URL on real hardware — including the older mid-range devices QA clouds deprioritize — and report median and p95 FPS, frame-time distributions, jank events and thermal throttling, per device. At launch you'll be able to set FPS budgets and fail CI when a scene drops below target.
Using both together
Plenty of teams will keep BrowserStack for functional QA and add DoesItRunOn for performance regression testing. They answer different questions; the budgets usually come from different line items too.
See your numbers on real hardware
Join the waitlist — early members lock in launch pricing and vote on the device pool.