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Best Hth Spa Apps & Games

249+ iOS apps & games curated and reviewed

3.4 avg rating
20 free apps & games
Updated September 2026

If you already know HTH™ | Test to Swim™, this is the deeper bench. 249+ hth spa apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Hth Spa Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1HTH™ | Test to Swim™HTH™ | Test to Swim™Free4.5★ (1.2K)YesNoSep 2026
2O2 SpaO2 SpaFree—NoNoMay 2026
3Royal Tree SpaRoyal Tree SpaFree—NoNoMay 2026
4Livio Med SpaLivio Med SpaFree—NoNoMay 2026
5Ananya SpaAnanya SpaFree—NoNoMay 2026
6Spa MasterSpa MasterFree4.5★ (48K)YesYesSep 2026
7Casa SpaCasa SpaFree3.8★ (6)NoNoAug 2026
8Ragdale Hall SpaRagdale Hall SpaFree—NoNoMay 2026

Top Picks for Hth Spa

HTH™ | Test to Swim™#1

HTH™ | Test to Swim™ by Solenis, LLC

Pool & Spa Water Testing
Editor's Choice
🔧 Utilities
4.5😞(1.2K ratings)
FreeAds
HTH™ | Test to Swim™ screenshot 1
HTH™ | Test to Swim™ screenshot 2
HTH™ | Test to Swim™ screenshot 3
HTH™ | Test to Swim™ screenshot 4
HTH™ | Test to Swim™ screenshot 5
HTH™ | Test to Swim™ screenshot 6

This app helps pool and spa owners maintain water quality by analyzing test strip results. It provides instant recommendations, step-by-step instructions, and access to helpful resources for clear and balanced water.

What We Love

  • 🚀 Easy to use
  • 👍 Helpful guidance
  • 💡 Tracks water testing history

Room to Improve

  • 🐛 Inconsistent and inaccurate results
  • 🤖 Poor camera/scanning functionality
  • 🤔 Requires too much personal information
  • 🚫 Doesn't work for all pool types

More Hth Spa apps to explore

FAQ about Hth Spa

What are the best hth spa apps & games for iPhone?
HTH™ | Test to Swim™ tops our hth spa apps & games ranking as of September 2026, with a 4.5-star average from 1.2K App Store ratings, and it's free to download.
Yes — 20 of the top hth spa apps & games we rank are free to download, including HTH™ | Test to Swim™ and O2 Spa.
HTH™ | Test to Swim™ shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ hth spa apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
The HTH™ Test to Swim™ app analyzes your pool or spa water test strip results using advanced technology. It provides instant recommendations and step-by-step instructions to help you maintain balanced and clear water, making pool and spa care easier.
The app utilizes Google Cloud Vision Technology to scan your HTH™ Pool Care 6-Way Test Strips, offering more accurate results. For spa owners, it features an interactive chart to match HTH spa™ Test Strips for quick and precise readings.