Most cloud sustainability tools are built for sustainability officers. They pull three-month-old billing data, run it through a proprietary model, and produce a PDF that engineers never see. By the time you know your us-east-1 cluster emits twice as much as us-west-2 would have, it's been running for a quarter. The architecture is locked in. The carbon is already burnt. The only moment you can act
TL;DR TestMu wins on price, faster setup, and community support. Use it if you're testing typical apps on phones and web browsers. Pcloudy costs more but tracks 60+ device performance metrics (battery, memory, thermal), supports IoT and smartwatches, is faster to connect, and handles script migration so you don't rewrite tests when switching. Both run parallel tests fine and work with Selenium,