MySpaSimple

Your Arctic Spas tub, without the wait.

MySpaSimple is a fast, quiet client for your hot tub. It answers the only question you actually have — is it ready? — from your Lock Screen, your watch face, or your pocket, before you've put shoes on.

Paste one key. That's the setup. No account. No password. No session that expires and logs you out on a cold Tuesday. Paste your API key once and the app is done asking you for things — including on the watch, which the phone sets up for you.

Every pump, individually. Not a single "everything on" button. Each pump, on its own, from the phone or the wrist.

Chemistry that doesn't cry wolf. pH and sanitiser at a glance, in plain green-amber-red. Alerts wait for a problem to persist before they bother you, so a single odd reading stays quiet and a real drift doesn't.

Built for the two places you use it. In the tub at night, and glanced at from indoors. Dark-first, with a live water surface that tells you the tub's state before you read a single number.

Widgets and complications. Temperature, pH and sanitiser on the Home Screen, the Lock Screen and the watch face. A Live Activity tracks the climb to temperature using the rate your tub is actually heating at.

Honest about its limits. Background checks are opportunistic — iOS decides when they run, and the app says so rather than promising round-the-clock monitoring. Charts start from your first launch, because the tub keeps no history to import.

Not affiliated with, endorsed by, or produced by Arctic Spas. "Arctic Spas" and "Spa Boy" are their trademarks.