Control your hot tub remotely from your iOS device. Adjust temperature, set filtration cycles, and manage pumps. Built-in freeze protection ensures your tub is safe.
Stone manager by ADDF Software
Editor's Choice
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Free
Best apps like Multi-Smart
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4.4 avg rating
10 free apps
Updated July 2026
Multi is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
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